NULL Pointer Dereference Affecting kernel-libbpf-devel package, versions <0:6.1.75-99.163.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIBBPFDEVEL-7445480
  • published12 Jul 2024
  • disclosed18 Mar 2024

Introduced: 18 Mar 2024

CVE-2024-26632  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-libbpf-devel to version 0:6.1.75-99.163.amzn2023 or higher.
This issue was patched in ALAS2023-2024-519.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-libbpf-devel package and not the kernel-libbpf-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

block: Fix iterating over an empty bio with bio_for_each_folio_all

If the bio contains no data, bio_first_folio() calls page_folio() on a NULL pointer and oopses. Move the test that we've reached the end of the bio from bio_next_folio() to bio_first_folio().

[axboe: add unlikely() to error case]

CVSS Scores

version 3.1