CVE-2026-53032: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: ab6c637ad0276e42f8acabcbc64932a6d346dab3 преди 520454e839710c327808c2fcc98e28cee77355fc; ab6c637ad0276e42f8acabcbc64932a6d346dab3 преди 0a36c1f72888bca0237295a4da19cd91821a90be; ab6c637ad0276e42f8acabcbc64932a6d346dab3 преди 6982653ce5f119982aa58f1af58e7bfbebf39252; ab6c637ad0276e42f8acabcbc64932a6d346dab3 преди da1d615ce49a47986a8864e2371a26e97861085c; ab6c637ad0276e42f8acabcbc64932a6d346dab3 преди 4d0a375887ab4d49e4da1ff10f9606cab8f7c3ad; af3d2e0f3a54e67806959d161e613457772babc5; 4782968e0d631b0d8944dcfd4bf8fb49be087101; 6.4.16 преди 6.5; 6.5.3 преди 6.6
• Linux Linux: 6.6; преди 6.6; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; 7.1 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53032
• https://nvd.nist.gov/vuln/detail/CVE-2026-53032
• 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