CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_payload: fix mask build for partial field offload nft_payload_offload_mask() builds the offload match mask for a payload expression that covers only part of a header field. For a partial IPv6 address match (field_len = 16, priv_len = 1) that shift is 1 << 120, which is undefined on the 32-bit int operand. It also trims only one word, so the remaining words stay 0xffffffff (and when priv_len is a multiple of 4 the trim is skipped entirely), leaving the mask covering more bytes than the rule matches. UBSAN: shift-out-of-bounds in net/netfilter/nft_payload.c:278:20 shift exponent 120 is too large for 32-bit type 'int' ... The match is byte-granular and struct nft_data is zero-initialised, so the correct mask is simply the first priv_len bytes set to 0xff. Set those bytes directly and drop the word/shift trimming; this removes the undefined shift and no longer over-masks the trailing bytes.
Засегнати продукти
- Linux Linux: a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди 3ee7b3f813b11f28cd6efdf7f24d64b5a7fd4dc7; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди 8720df4504e0ed1781a702f65251bd47b3534d5e; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди 363c3a84a946d53e5e121c9f47c7c2b7d228c46b; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди b19b5d2e042c294e2cc1c908dc598f9d64015396; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди a375d8ace807767f29f276b681b6324c74929b1d; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди 16b553c46e347bc9de9946c4960654d5884a86de; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди 630295d5bba1d0e0f494cc459452eb0a0058c545; a5d45bc0dc50f9dd83703510e9804d813a9cac32 преди 39e88f28fb32bf02bd4b525c24c842c9cff5663d; 5c2b4b4f9fa5b765b927e361e3d310bcb5773015; 5.9.14 преди 5.10
- Linux Linux: 5.10; преди 5.10; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък
История
- 17 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-74579
- https://nvd.nist.gov/vuln/detail/CVE-2026-74579
- https://git.kernel.org/stable/c/3ee7b3f813b11f28cd6efdf7f24d64b5a7fd4dc7
- https://git.kernel.org/stable/c/8720df4504e0ed1781a702f65251bd47b3534d5e
- https://git.kernel.org/stable/c/363c3a84a946d53e5e121c9f47c7c2b7d228c46b
- https://git.kernel.org/stable/c/b19b5d2e042c294e2cc1c908dc598f9d64015396
- https://git.kernel.org/stable/c/a375d8ace807767f29f276b681b6324c74929b1d
- https://git.kernel.org/stable/c/16b553c46e347bc9de9946c4960654d5884a86de
- https://git.kernel.org/stable/c/630295d5bba1d0e0f494cc459452eb0a0058c545
- https://git.kernel.org/stable/c/39e88f28fb32bf02bd4b525c24c842c9cff5663d