Important: kernel security, bug fix, and enhancement update

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

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):

• posix cpu timer use-after-free may lead to local privilege escalation (CVE-2022-2585)
• Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option (CVE-2022-30594)

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):

• kernel crash after reboot of T14/G2 AMD laptop (mt7921e module) (BZ#2095653)
• execve exit tracepoint not called (BZ#2106661)
• Matrox black screen on VGA output on some systems. (BZ#2112017)
• The kernel needs to offer a way to reseed the Crypto DRBG and atomically extract random numbers from it (BZ#2121129)
• watchdog BUG: soft lockup - CPU#30 stuck for 34s! [swapper/30:0] (BZ#2127857)
• Update cifs to 5.16 (BZ#2127858)
• Bad page state in process qemu-kvm pfn:68a74600 (BZ#2127859)
• vfio zero page mappings fail after 2M instances (BZ#2128791)
• The kernel needs to offer a way to reseed the Crypto DRBG and atomically extract random numbers from it (part 2) (BZ#2128970)

Enhancement(s):

• Need to enable hpilo to support new HPE RL300 Gen11 for ARM (aarch64) (BZ#2129453)

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

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.0 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.0 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.0 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 ppc64le
• Red Hat CodeReady Linux Builder for x86_64 9 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.0 aarch64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.0 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.0 ppc64le
• Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.0 s390x
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.0 aarch64
• Red Hat Enterprise Linux Server for ARM 64 - 4 years of updates 9.0 aarch64
• Red Hat Enterprise Linux Server for IBM z Systems - 4 years of updates 9.0 s390x

Fixes

• BZ - 2085300 - CVE-2022-30594 kernel: Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option
• BZ - 2114874 - CVE-2022-2585 kernel: posix cpu timer use-after-free may lead to local privilege escalation

CVEs

• CVE-2022-2585
• CVE-2022-30594

References

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