ALSA-2026:95212: Important: kernel security, bug fix, and enhancement update

Q: Which kernel areas are implicated by the security fixes?

The fixes cover SCTP stream and peer handling, SMC networking, RDMA/rxe responder and resource handling, and Open vSwitch connection-tracking limit teardown. Several listed fixes address use-after-free conditions, and one addresses an out-of-bounds condition in RDMA/rxe.

Q: Which installed package variants are covered by this update?

The advisory covers almalinux/kernel and related packages including kernel-core, kernel-debug, kernel-debug-core, kernel-debug-devel, kernel-abi-stablelists, kernel-cross-headers, and bpftool. The provided data does not include fixed package versions.

Q: Does this update include changes beyond security fixes?

Yes. It also includes an AlmaLinux 8.10 s390/SMP bug fix removing conditional emergency signal usage.

Published Nov 4, 2026

Updated

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

Security Fix(es):

kernel: sctp: stream: fully roll back denied add-stream state (CVE-2026-52929) kernel: net/smc: fix UAF in smccdcrxhandler() by pinning the socket (CVE-2026-64541) kernel: sctp: clear newtransport when removing a peer (CVE-2026-74586) kernel: RDMA/rxe: Fix responder UAF on IBQPMAXDESTRDATOMIC modifyqp (CVE-2026-80864) kernel: RDMA/rxe: Fix OOB in freerdatomicresources() (CVE-2026-80863) kernel: openvswitch: Fix CT limit teardown use-after-free (CVE-2026-89488)

Bug Fix(es) and Enhancement(s):

AlmaLinux8.10 - s390/smp: Remove conditional emergency signal usage (JIRA:RHEL-298849)

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.

Affected Software

25 affected componentsFixes available

almalinux/bpftool<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-abi-stablelists<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-core<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-cross-headers<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-debug<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-debug-core<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-debug-devel<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-debug-modules<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-debug-modules-extra<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-devel<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-doc<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-headers<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-modules<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-modules-extra<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-tools<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-tools-libs<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-tools-libs-devel<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-zfcpdump<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-zfcpdump-core<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-zfcpdump-devel<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-zfcpdump-modules<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/kernel-zfcpdump-modules-extra<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/perf<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

almalinux/python3-perf<4.18.0-553.184.1.el8_10

4.18.0-553.184.1.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade almalinux/bpftool to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-abi-stablelists to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-core to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-cross-headers to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-debug to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-debug-core to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-debug-devel to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-debug-modules to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-debug-modules-extra to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-devel to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-doc to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-headers to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-modules to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-modules-extra to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-tools to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-tools-libs to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-tools-libs-devel to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-zfcpdump to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-zfcpdump-core to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-zfcpdump-devel to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-zfcpdump-modules to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/kernel-zfcpdump-modules-extra to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/perf to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10
Upgrade
Upgrade almalinux/python3-perf to a version that resolves this vulnerability.
Fixed in 4.18.0-553.184.1.el8_10

Event History

Nov 4, 2026

Advisory Published

via OSV·12:00 AM

Data Sourced

via OSV·12:00 AM

DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

Which kernel areas are implicated by the security fixes?

The fixes cover SCTP stream and peer handling, SMC networking, RDMA/rxe responder and resource handling, and Open vSwitch connection-tracking limit teardown. Several listed fixes address use-after-free conditions, and one addresses an out-of-bounds condition in RDMA/rxe.

Which installed package variants are covered by this update?

The advisory covers almalinux/kernel and related packages including kernel-core, kernel-debug, kernel-debug-core, kernel-debug-devel, kernel-abi-stablelists, kernel-cross-headers, and bpftool. The provided data does not include fixed package versions.

Does this update include changes beyond security fixes?

Yes. It also includes an AlmaLinux 8.10 s390/SMP bug fix removing conditional emergency signal usage.

ALSA-2026:95212: Important: kernel security, bug fix, and enhancement update

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

Which kernel areas are implicated by the security fixes?

Which installed package variants are covered by this update?

Does this update include changes beyond security fixes?

Company

Resources

Contact

Frequently Asked Questions

Which kernel areas are implicated by the security fixes?

Which installed package variants are covered by this update?

Does this update include changes beyond security fixes?