QID 239151

Date Published: 2021-03-24

QID 239151: Red Hat Update for kernel (RHSA-2021:0856)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es): kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) kernel: SCSI target (LIO)
write to any block on ILO backstore (CVE-2020-28374) kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661) kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532) kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427) kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053) kernel: performance counters race condition use-after-free (CVE-2020-14351) kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645) kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656) kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) kernel: increase slab leak leads to DoS (CVE-2021-20265)

Affected Products:

Red Hat Enterprise Linux Server 7 x86_64
Red Hat Enterprise Linux Workstation 7 x86_64
Red Hat Enterprise Linux Desktop 7 x86_64
Red Hat Enterprise Linux for IBM z Systems 7 s390x
Red Hat Enterprise Linux for Power, big endian 7 ppc64
Red Hat Enterprise Linux for Scientific Computing 7 x86_64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le
Red Hat Virtualization Host 4 for RHEL 7 x86_64

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

CVSS V3 rated as Critical - 8.1 severity.

CVSS V2 rated as High - 7.2 severity.

Solution

Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.

Refer to Red Hat security advisory RHSA-2021:0856 to address this issue and obtain more information.

Vendor References

RHSA-2021:0856 - access.redhat.com/errata/RHSA-2021:0856?language=en

CVEs related to QID 239151

CVE-2019-19532 | CVE-2020-0427 | CVE-2020-7053 | CVE-2020-14351 | CVE-2020-25211 | CVE-2020-25645 | CVE-2020-25656 | CVE-2020-25705 | CVE-2020-28374 | CVE-2020-29661 | CVE-2021-20265 |

Software Advisories

Advisory ID	Software	Component	Link
RHSA-2021:0856	Red Hat Enterprise Linux		access.redhat.com/errata/RHSA-2021:0856?language=en

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