The RHEL 7 kernel is affected by multiple vulnerabilities mentioned in RHSA-2020:5656 advisory
Reporter | Title | Published | Views | Family All 199 |
---|---|---|---|---|
![]() | (RHSA-2020:5656) Moderate: kernel security update | 22 Dec 202008:30 | – | redhat |
![]() | (RHSA-2020:5206) Moderate: kernel security and bug fix update | 24 Nov 202009:51 | – | redhat |
![]() | (RHSA-2020:5430) Moderate: kernel security and bug fix update | 15 Dec 202008:24 | – | redhat |
![]() | (RHSA-2021:0019) Moderate: kernel security and bug fix update | 5 Jan 202109:12 | – | redhat |
![]() | (RHSA-2020:2104) Important: kernel-alt security and bug fix update | 12 May 202012:52 | – | redhat |
![]() | (RHSA-2020:3545) Moderate: kernel-alt security and bug fix update | 25 Aug 202012:38 | – | redhat |
![]() | (RHSA-2020:4060) Important: kernel security, bug fix, and enhancement update | 29 Sep 202018:42 | – | redhat |
![]() | (RHSA-2020:4062) Important: kernel-rt security and bug fix update | 29 Sep 202018:41 | – | redhat |
![]() | (RHSA-2020:4609) Moderate: kernel-rt security and bug fix update | 3 Nov 202012:20 | – | redhat |
![]() | Red Hat Security Advisory: kernel security update | 13 Sep 202422:11 | – | osv |
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2020:5656. The text
# itself is copyright (C) Red Hat, Inc.
##
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"The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2020:5656 advisory.
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c
(CVE-2017-18551)
* kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c
leads to use-after-free (CVE-2018-20836)
* kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)
* kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c
(CVE-2019-19046)
* kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to
a use-after-free in ext4_put_super in fs/ext4/super.c (CVE-2019-19447)
* kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)
* kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
other related information, refer to the CVE page(s) listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_5656.json
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],
'pkgs': [
{'reference':'bpftool-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-bootwrapper-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-bootwrapper-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-devel-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-devel-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-devel-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-debug-devel-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-devel-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-devel-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-devel-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-devel-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-headers-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-headers-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-headers-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-headers-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-kdump-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-kdump-devel-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-devel-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-devel-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-tools-libs-devel-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'perf-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python-perf-3.10.0-957.65.1.el7', 'cpu':'ppc64', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python-perf-3.10.0-957.65.1.el7', 'cpu':'ppc64le', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python-perf-3.10.0-957.65.1.el7', 'cpu':'s390x', 'release':'7', 'rpm_spec_vers_cmp':TRUE},
{'reference':'python-perf-3.10.0-957.65.1.el7', 'cpu':'x86_64', 'release':'7', 'rpm_spec_vers_cmp':TRUE}
]
}
];
var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);
var flag = 0;
foreach var constraint_array ( constraints ) {
var repo_relative_urls = NULL;
if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
foreach var pkg ( constraint_array['pkgs'] ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
var cves = NULL;
if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
if (reference &&
_release &&
rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
(applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
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, cves:cves)) flag++;
}
}
if (flag)
{
var extra = NULL;
if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
else extra = rpm_report_get();
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : extra
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / kernel / kernel-bootwrapper / kernel-debug / etc');
}
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