Integer Overflow or Wraparound Affecting kernel-preempt package, versions <5.3.18-59.16.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.19% (59th percentile)

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  • Snyk IDSNYK-SLES153-KERNELPREEMPT-2670985
  • published14 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 SLES:15.3 kernel-preempt to version 5.3.18-59.16.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-preempt package and not the kernel-preempt package as distributed by SLES. See How to fix? for SLES:15.3 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