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Vulnerabilities

Vulnerability · RLSA-2026:83159

Important: kernel-rt security, bug fix, and enhancement update

Published Oct 16, 2026 · catalog updated Oct 16, 2026 · Important: kernel-rt security, bug

Open the advisory

Exploitation likelihood is not on this record for RLSA-2026:83159. A missing EPSS score is not a low risk. Compare Important: kernel-rt security, bug with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Important: kernel-rt security, bug).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
Rocky Linux:8 kernel-rt

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: Linux kernel: Denial of Service due to use-after-free in act_tunnel_key (CVE-2026-68377) * kernel: ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get (CVE-2026-72262) * kernel: net/sched: cls_route: fix fastmap use-after-free on filter (CVE-2026-74583) * kernel: ALSA: usx2y: bound the hwdep mmap fault offset (CVE-2026-74641) * kernel: udp: fix potential use-after-free in tunnel segmentation (CVE-2026-74705) * kernel: svcrdma: Validate Read chunk positions before reconstruction (CVE-2026-89526) * kernel: NFSD: Prevent client use-after-free during blocked-lock reaping (CVE-2026-90036) * kernel: svcrdma: Reject Write/Reply chunks with segcount 0 (CVE-2026-93228) * kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush() (CVE-2026-93262) Bug Fix(es) and Enhancement(s): * powerpc/pseries: pci - logic bug in SR-IOV enable (JIRA:Rocky Linux-240146) 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Rocky Linux:8 kernel-rt0 → 0:4.18.0-553.174.1.rt7.515.el8_10

How to fix RLSA-2026:83159

  • Recommended remediation

    A patch or advisory reference is linked. Open the original publisher for availability by product version.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for RLSA-2026:83159. A missing EPSS score is not a low risk. Compare Important: kernel-rt security, bug with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 0:4.18.0-553.174.1.rt7.515.el8_10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: Linux kernel: Denial of Service due to use-after-free in act_tunnel_key (CVE-2026-68377) * kernel: ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get (CVE-2026-72262) * kernel: net/sched: cls_route: fix fastmap use-a

  2. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    kernel-rt fixed in 0:4.18.0-553.174.1.rt7.515.el8_10

  3. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    kernel-rt fixed in 0:4.18.0-553.174.1.rt7.515.el8_10

  4. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: Linux kernel: Denial of Service due to use-after-free in act_tunnel_key (CVE-2026-68377) * kernel: ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get (CVE-2026-72262) * kernel: net/sched: cls_route: fix fastmap use-a

Sources

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.