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Vulnerabilities CVE-2020-36791

CVE-2020-36791

High
Open
TLP:CLEAR

net_sched: keep alloc_hash updated after hash allocation

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Description

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().

Details

CVSS Score
7.8
EPSS Score
0.19%

8.5th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
May 7, 2025
Last Modified
Aug 5, 2026
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