High RHSA-2021:2735 3 CVEs

Red Hat Security Advisory: kernel security update

Published Sep 13, 2024 · Updated Aug 26, 2026

Ecosystem: Red Hat

Fixed packages 19

Release	Package	Fixed in
Red Hat · RHEL 6 ELS rhel_els:6	kernel	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-abi-whitelists	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debug	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debug-debuginfo	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debug-devel	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debuginfo	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debuginfo-common-i686	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debuginfo-common-s390x	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-debuginfo-common-x86_64	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-devel	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-doc	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-firmware	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-kdump	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-kdump-debuginfo	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	kernel-kdump-devel	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	perf	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	perf-debuginfo	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	python-perf	0:2.6.32-754.41.2.el6
Red Hat · RHEL 6 ELS rhel_els:6	python-perf-debuginfo	0:2.6.32-754.41.2.el6

Vulnerabilities 3

High 7.8

CVE-2021-3347 Public exploit

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu

Jan 29, 2021
Unscored —

CVE-2020-12362

Integer overflow in the firmware for some Intel(R) Graphics Drivers for Windows * before version 26.20.100.7212 and bef…

linux-raspi2 linux-hwe linux-azure linux-riscv Windows Debian Ubuntu

Feb 17, 2021
Unscored —

CVE-2021-33909 Public exploit

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, …

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

Jul 20, 2021

References

article
https://access.redhat.com/security/updates/classification/#important
article
https://access.redhat.com/security/vulnerabilities/RHSB-2021-006
report
https://bugzilla.redhat.com/show_bug.cgi?id=1922249
report
https://bugzilla.redhat.com/show_bug.cgi?id=1930246
report
https://bugzilla.redhat.com/show_bug.cgi?id=1970273
advisory
https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_2735.json
report
https://access.redhat.com/security/cve/CVE-2020-12362
advisory
https://www.cve.org/CVERecord?id=CVE-2020-12362
advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-12362
report
https://access.redhat.com/security/cve/CVE-2021-3347
advisory
https://www.cve.org/CVERecord?id=CVE-2021-3347
advisory
https://nvd.nist.gov/vuln/detail/CVE-2021-3347
report
https://access.redhat.com/security/cve/CVE-2021-33909
advisory
https://www.cve.org/CVERecord?id=CVE-2021-33909
advisory
https://nvd.nist.gov/vuln/detail/CVE-2021-33909
article
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b
article
https://www.openwall.com/lists/oss-security/2021/07/20/1
article
https://www.qualys.com/2021/07/20/cve-2021-33909/sequoia-local-privilege-escalation-linux.txt