Integer Overflow or Wraparound Affecting kernel-uek-firmware package, versions <0:4.1.12-124.52.5.el6uek


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.91% (89th percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELUEKFIRMWARE-2599014
  • published10 Apr 2022
  • disclosed20 Jul 2021

Introduced: 20 Jul 2021

CVE-2021-33909  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:6 kernel-uek-firmware to version 0:4.1.12-124.52.5.el6uek or higher.
This issue was patched in ELSA-2021-9369.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-firmware package and not the kernel-uek-firmware package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

References

CVSS Scores

version 3.1