Linux Distros Unpatched Vulnerability : CVE-2024-50228

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(230791);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/03/06");

  script_cve_id("CVE-2024-50228");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2024-50228");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - In the Linux kernel, the following vulnerability has been resolved: mm: shmem: fix data-race in
    shmem_getattr() I got the following KCSAN report during syzbot testing:
    ================================================================== BUG: KCSAN: data-race in
    generic_fillattr / inode_set_ctime_current write to 0xffff888102eb3260 of 4 bytes by task 6565 on cpu 1:
    inode_set_ctime_to_ts include/linux/fs.h:1638 [inline] inode_set_ctime_current+0x169/0x1d0 fs/inode.c:2626
    shmem_mknod+0x117/0x180 mm/shmem.c:3443 shmem_create+0x34/0x40 mm/shmem.c:3497 lookup_open fs/namei.c:3578
    [inline] open_last_lookups fs/namei.c:3647 [inline] path_openat+0xdbc/0x1f00 fs/namei.c:3883
    do_filp_open+0xf7/0x200 fs/namei.c:3913 do_sys_openat2+0xab/0x120 fs/open.c:1416 do_sys_open
    fs/open.c:1431 [inline] __do_sys_openat fs/open.c:1447 [inline] __se_sys_openat fs/open.c:1442 [inline]
    __x64_sys_openat+0xf3/0x120 fs/open.c:1442 x64_sys_call+0x1025/0x2d60
    arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
    do_syscall_64+0x54/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e read to
    0xffff888102eb3260 of 4 bytes by task 3498 on cpu 0: inode_get_ctime_nsec include/linux/fs.h:1623 [inline]
    inode_get_ctime include/linux/fs.h:1629 [inline] generic_fillattr+0x1dd/0x2f0 fs/stat.c:62
    shmem_getattr+0x17b/0x200 mm/shmem.c:1157 vfs_getattr_nosec fs/stat.c:166 [inline] vfs_getattr+0x19b/0x1e0
    fs/stat.c:207 vfs_statx_path fs/stat.c:251 [inline] vfs_statx+0x134/0x2f0 fs/stat.c:315
    vfs_fstatat+0xec/0x110 fs/stat.c:341 __do_sys_newfstatat fs/stat.c:505 [inline]
    __se_sys_newfstatat+0x58/0x260 fs/stat.c:499 __x64_sys_newfstatat+0x55/0x70 fs/stat.c:499
    x64_sys_call+0x141f/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:263 do_syscall_x64
    arch/x86/entry/common.c:52 [inline] do_syscall_64+0x54/0x120 arch/x86/entry/common.c:83
    entry_SYSCALL_64_after_hwframe+0x76/0x7e value changed: 0x2755ae53 -> 0x27ee44d3 Reported by Kernel
    Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 3498 Comm: udevd Not tainted
    6.11.0-rc6-syzkaller-00326-gd1f2d51b711a-dirty #0 Hardware name: Google Google Compute Engine/Google
    Compute Engine, BIOS Google 08/06/2024 ==================================================================
    When calling generic_fillattr(), if you don't hold read lock, data-race will occur in inode member
    variables, which can cause unexpected behavior. Since there is no special protection when shmem_getattr()
    calls generic_fillattr(), data-race occurs by functions such as shmem_unlink() or shmem_mknod(). This can
    cause unexpected results, so commenting it out is not enough. Therefore, when calling generic_fillattr()
    from shmem_getattr(), it is appropriate to protect the inode using inode_lock_shared() and
    inode_unlock_shared() to prevent data-race. (CVE-2024-50228)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-50228");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched");
  script_require_ports("Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}
include('vdf.inc');

# @tvdl-content
var vuln_data = {
 "metadata": {
  "spec_version": "1.0p"
 },
 "requires": [
  {
   "scope": "scan_config",
   "match": {
    "vendor_unpatched": true
   }
  },
  {
   "scope": "target",
   "match": {
    "os": "linux"
   }
  }
 ],
 "report": {
  "report_type": "unpatched"
 },
 "checks": [
  {
   "product": {
    "name": [
     "kernel",
     "kernel-rt"
    ],
    "type": "rpm_package"
   },
   "check_algorithm": "rpm",
   "constraints": [
    {
     "requires": [
      {
       "scope": "target",
       "match": {
        "distro": "redhat"
       }
      },
      {
       "scope": "target",
       "match_one": {
        "os_version": [
         "8",
         "9"
        ]
       }
      }
     ]
    }
   ]
  }
 ]
};

var vdf_res = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result: vdf_res);