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

Q: What level of access does the supplied severity vector indicate an attacker needs?

The supplied CVSS vector indicates local access, low privileges, and no user interaction. It also indicates high potential impact to confidentiality, integrity, and availability.

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

The security fixes cover SCTP stream and peer handling, SMC networking, RDMA/rxe responder and resource handling, and Open vSwitch connection-tracking limit teardown.

Q: Are all of the listed security issues use-after-free flaws?

Several listed fixes address use-after-free conditions, including issues in SMC, RDMA/rxe, and Open vSwitch. The update also includes SCTP state-handling fixes and an RDMA/rxe out-of-bounds fix.

Q: Does this update contain changes beyond security fixes?

Yes. It includes a Rocky Linux 8.10 s390/SMP bug fix that removes conditional emergency signal usage.

Published Nov 5, 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):

Rocky Linux8.10 - s390/smp: Remove conditional emergency signal usage (JIRA:Rocky Linux-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

1 affected componentFixes available

rocky-linux/kernel<0:4.18.0-553.184.1.el8_10

0:4.18.0-553.184.1.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade rocky-linux/kernel to a version that resolves this vulnerability.
Fixed in 0:4.18.0-553.184.1.el8_10

Event History

Nov 5, 2026

Advisory Published

via OSV·09:03 AM

Data Sourced

via OSV·09:03 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

What level of access does the supplied severity vector indicate an attacker needs?

The supplied CVSS vector indicates local access, low privileges, and no user interaction. It also indicates high potential impact to confidentiality, integrity, and availability.

Which kernel areas are covered by the security fixes?

The security fixes cover SCTP stream and peer handling, SMC networking, RDMA/rxe responder and resource handling, and Open vSwitch connection-tracking limit teardown.

Are all of the listed security issues use-after-free flaws?

Several listed fixes address use-after-free conditions, including issues in SMC, RDMA/rxe, and Open vSwitch. The update also includes SCTP state-handling fixes and an RDMA/rxe out-of-bounds fix.

Does this update contain changes beyond security fixes?

Yes. It includes a Rocky Linux 8.10 s390/SMP bug fix that removes conditional emergency signal usage.

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

Affected Software

Remediation

Event History

Child vulnerabilities

Frequently Asked Questions

What level of access does the supplied severity vector indicate an attacker needs?

Which kernel areas are covered by the security fixes?

Are all of the listed security issues use-after-free flaws?

Does this update contain changes beyond security fixes?

Company

Resources

Contact

Frequently Asked Questions

What level of access does the supplied severity vector indicate an attacker needs?

Which kernel areas are covered by the security fixes?

Are all of the listed security issues use-after-free flaws?

Does this update contain changes beyond security fixes?