CVE-2026-98631 Affecting kernel-uek-modules package, versions <0:5.15.0-326.222.4.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEKMODULES-22157839
  • published3 Nov 2026
  • disclosed18 Oct 2026

Introduced: 18 Oct 2026

NewCVE-2026-98631  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek-modules to version 0:5.15.0-326.222.4.el8uek or higher.
This issue was patched in ELSA-2026-500574.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-modules package and not the kernel-uek-modules package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

xsk: Use a 32-bit compare in xsk_map_gen_lookup

xsk_map_gen_lookup() loads a u32 key and compares it with max_entries using BPF_JMP_IMM. BPF immediates are sign-extended to 64 bits, so a max_entries value of 0x80000000 or higher becomes a threshold larger than every zero-extended 32-bit key. An out-of-range index then skips the bounds check and the generated lookup reads past xsk_map[].

Compare with BPF_JMP32_IMM so the check stays in 32-bit unsigned range.

CVSS Base Scores

version 3.1