CVE-2020-36791 Affecting kernel-default-devel package, versions <5.3.18-150300.59.207.1


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-SLES153-KERNELDEFAULTDEVEL-10379978
  • published18 Jun 2025
  • disclosed17 Jun 2025

Introduced: 17 Jun 2025

NewCVE-2020-36791  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 kernel-default-devel to version 5.3.18-150300.59.207.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-devel package and not the kernel-default-devel package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

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

net_sched: keep alloc_hash updated after hash allocation

In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access.

cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().

CVSS Base Scores

version 3.1