CVE-2026-53032

5.5 Moyenne

Publiée le 24/06/2026 à 19:17 · Modifiée le 14/07/2026 à 21:38 · Analysée par le NVD · Source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL deref in map_kptr_match_type for scalar regs Commit ab6c637ad027 ("bpf: Fix a bpf_kptr_xchg() issue with local kptr") refactored map_kptr_match_type() to branch on btf_is_kernel() before checking base_type(). A scalar register stored into a kptr slot has no btf, so the btf_is_kernel(reg->btf) call dereferences NULL. Move the base_type() != PTR_TO_BTF_ID guard before any reg->btf access.

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Produits concernés

Linux
Linux linux kernel

Scores CVSS

Version	Score	Source	Vecteur
3.1	5.5 Moyenne	nvd@nist.gov (NVD)	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-476

Références

https://git.kernel.org/stable/c/0a36c1f72888bca0237295a4da19cd91821a90be Patch
https://git.kernel.org/stable/c/4d0a375887ab4d49e4da1ff10f9606cab8f7c3ad Patch
https://git.kernel.org/stable/c/520454e839710c327808c2fcc98e28cee77355fc Patch
https://git.kernel.org/stable/c/6982653ce5f119982aa58f1af58e7bfbebf39252 Patch
https://git.kernel.org/stable/c/da1d615ce49a47986a8864e2371a26e97861085c Patch

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories