Issued:

2023-08-29

Updated:

2023-08-29

RHSA-2023:4819 - Important: kernel security and bug fix update

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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

Security Fix(es):

• kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

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.

Bug Fix(es):

• nf_conntrack causing nfs to stall (BZ#2128262)

• Request to backport upstream commit 5e2d2cc2588b, 26a8b12747c9, and e98fa02c4f2e for RHEL 7.9.z (BZ#2180681)

• Fix soft lockup happens in gfs2_dir_get_hash_table() (BZ#2190450)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

Updated Packages

• kernel-debug-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-headers-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-tools-libs-devel-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-kdump-devel-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-headers-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-3.10.0-1160.99.1.el7.x86_64.rpm
• bpftool-debuginfo-3.10.0-1160.99.1.el7.ppc64.rpm
• bpftool-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-debug-debuginfo-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-bootwrapper-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-debuginfo-common-ppc64-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-bootwrapper-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-debuginfo-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-debuginfo-common-s390x-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-tools-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-tools-debuginfo-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-debug-devel-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-tools-libs-3.10.0-1160.99.1.el7.x86_64.rpm
• python-perf-debuginfo-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-3.10.0-1160.99.1.el7.ppc64.rpm
• python-perf-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-tools-3.10.0-1160.99.1.el7.ppc64.rpm
• python-perf-debuginfo-3.10.0-1160.99.1.el7.s390x.rpm
• perf-3.10.0-1160.99.1.el7.ppc64le.rpm
• perf-debuginfo-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-tools-libs-devel-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-3.10.0-1160.99.1.el7.s390x.rpm
• bpftool-3.10.0-1160.99.1.el7.s390x.rpm
• bpftool-debuginfo-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-debuginfo-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-3.10.0-1160.99.1.el7.src.rpm
• perf-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-kdump-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-debug-debuginfo-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-doc-3.10.0-1160.99.1.el7.noarch.rpm
• python-perf-3.10.0-1160.99.1.el7.ppc64le.rpm
• python-perf-debuginfo-3.10.0-1160.99.1.el7.ppc64.rpm
• python-perf-debuginfo-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-devel-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-debuginfo-common-x86_64-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-tools-debuginfo-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-tools-libs-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-tools-libs-devel-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-debug-3.10.0-1160.99.1.el7.ppc64le.rpm
• bpftool-debuginfo-3.10.0-1160.99.1.el7.ppc64le.rpm
• python-perf-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-devel-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-devel-3.10.0-1160.99.1.el7.s390x.rpm
• bpftool-debuginfo-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-debug-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-debuginfo-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-headers-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-debuginfo-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-debuginfo-common-ppc64le-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-headers-3.10.0-1160.99.1.el7.s390x.rpm
• perf-debuginfo-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-tools-libs-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-abi-whitelists-3.10.0-1160.99.1.el7.noarch.rpm
• kernel-tools-debuginfo-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-1160.99.1.el7.ppc64le.rpm
• kernel-debug-debuginfo-3.10.0-1160.99.1.el7.ppc64.rpm
• bpftool-3.10.0-1160.99.1.el7.x86_64.rpm
• kernel-kdump-debuginfo-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-tools-3.10.0-1160.99.1.el7.x86_64.rpm
• perf-debuginfo-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-debug-debuginfo-3.10.0-1160.99.1.el7.x86_64.rpm
• python-perf-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-debug-devel-3.10.0-1160.99.1.el7.x86_64.rpm
• perf-3.10.0-1160.99.1.el7.ppc64.rpm
• perf-3.10.0-1160.99.1.el7.s390x.rpm
• kernel-debug-3.10.0-1160.99.1.el7.x86_64.rpm
• perf-debuginfo-3.10.0-1160.99.1.el7.ppc64.rpm
• kernel-devel-3.10.0-1160.99.1.el7.ppc64le.rpm
• bpftool-3.10.0-1160.99.1.el7.ppc64.rpm

Fixes

• This content is not included.BZ - 2215768
• This content is not included.BZ - 2217845

CVEs

• CVE-2023-20593
• CVE-2023-35788

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.