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CVE-2026-53032

bpf: Fix NULL deref in map_kptr_match_type for scalar regs

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version ab6c637ad0276e42f8acabcbc64932a6d346dab3
Version < 520454e839710c327808c2fcc98e28cee77355fc
Status affected
Version ab6c637ad0276e42f8acabcbc64932a6d346dab3
Version < 0a36c1f72888bca0237295a4da19cd91821a90be
Status affected
Version ab6c637ad0276e42f8acabcbc64932a6d346dab3
Version < 6982653ce5f119982aa58f1af58e7bfbebf39252
Status affected
Version ab6c637ad0276e42f8acabcbc64932a6d346dab3
Version < da1d615ce49a47986a8864e2371a26e97861085c
Status affected
Version ab6c637ad0276e42f8acabcbc64932a6d346dab3
Version < 4d0a375887ab4d49e4da1ff10f9606cab8f7c3ad
Status affected
Version af3d2e0f3a54e67806959d161e613457772babc5
Status affected
Version 4782968e0d631b0d8944dcfd4bf8fb49be087101
Status affected
Version 6.4.16
Version < 6.5
Status affected
Version 6.5.3
Version < 6.6
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.6
Status affected
Version 0
Version < 6.6
Status unaffected
Version <= 6.6.*
Version 6.6.141
Status unaffected
Version <= 6.12.*
Version 6.12.91
Status unaffected
Version <= 6.18.*
Version 6.18.33
Status unaffected
Version <= 7.0.*
Version 7.0.10
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.063
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/520454e839710c327808c2fcc98e28cee77355fc
https://git.kernel.org/stable/c/0a36c1f72888bca0237295a4da19cd91821a90be
https://git.kernel.org/stable/c/6982653ce5f119982aa58f1af58e7bfbebf39252
https://git.kernel.org/stable/c/da1d615ce49a47986a8864e2371a26e97861085c
https://git.kernel.org/stable/c/4d0a375887ab4d49e4da1ff10f9606cab8f7c3ad