<p>There is no fixed version for <code>Centos:7</code> <code>bpftool</code>.</p>

Stack-based Buffer Overflow Affecting bpftool package, versions *

Threat Intelligence

0.04% (6^th percentile)

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Snyk ID SNYK-CENTOS7-BPFTOOL-6638106
published 18 Apr 2024
disclosed 17 Apr 2024

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Introduced: 17 Apr 2024

CVE-2024-26884 Open this link in a new tab CWE-121 Open this link in a new tab

How to fix?

There is no fixed version for Centos:7 bpftool.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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

bpf: Fix hashtab overflow check on 32-bit arches

The hashtab code relies on roundup_pow_of_two() to compute the number of hash buckets, and contains an overflow check by checking if the resulting value is 0. However, on 32-bit arches, the roundup code itself can overflow by doing a 32-bit left-shift of an unsigned long value, which is undefined behaviour, so it is not guaranteed to truncate neatly. This was triggered by syzbot on the DEVMAP_HASH type, which contains the same check, copied from the hashtab code. So apply the same fix to hashtab, by moving the overflow check to before the roundup.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

High
Availability (A)

High

Stack-based Buffer Overflow Affecting bpftool package, versions *

Severity

Based on CentOS security rating