CVE-2026-43043: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: crypto: af-alg - fix NULL pointer dereference in scatterwalk The AF_ALG interface fails to unmark the end of a Scatter/Gather List (SGL) when chaining a new af_alg_tsgl structure. If a sendmsg() fills an SGL exactly to MAX_SGL_ENTS, the last entry is marked as the end. A subsequent sendmsg() allocates a new SGL and chains it, but fails to clear the end marker on the previous SGL's last data entry. This causes the crypto scatterwalk to hit a premature end, returning NULL on sg_next() and leading to a kernel panic during dereference. Fix this by explicitly unmarking the end of the previous SGL when performing sg_chain() in af_alg_alloc_tsgl().

Засегнати продукти

• Linux Linux: 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди f48d3dd99199180cf37d6253550c55e86372309a; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди f9acceae7b004956851fd4268edf9f518a9bce04; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди 7195350fb78538c25cd790d703f8f2c73ee0d395; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди 7cdf2c6381b21ab5ccf8116750d5582fcd6c0f49; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди 44eafa39363e8d5dfda6a8c6eb6b45458ed4b948; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди 00cbdec17c15d024a1c5002c7365df7624a18a75; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди 4b03ab0a587ec57eb7ddb5c115d84a42896f60f7; 8ff590903d5fc7f5a0a988c38267a3d08e6393a2 преди 62397b493e14107ae82d8b80938f293d95425bcb
• Linux Linux: 2.6.38; преди 2.6.38; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.168 до 6.1.*; 6.6.134 до 6.6.*; 6.12.81 до 6.12.*; 6.18.22 до 6.18.*; 6.19.12 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-43043
• https://nvd.nist.gov/vuln/detail/CVE-2026-43043
• https://git.kernel.org/stable/c/f48d3dd99199180cf37d6253550c55e86372309a
• https://git.kernel.org/stable/c/f9acceae7b004956851fd4268edf9f518a9bce04
• https://git.kernel.org/stable/c/7195350fb78538c25cd790d703f8f2c73ee0d395
• https://git.kernel.org/stable/c/7cdf2c6381b21ab5ccf8116750d5582fcd6c0f49
• https://git.kernel.org/stable/c/44eafa39363e8d5dfda6a8c6eb6b45458ed4b948
• https://git.kernel.org/stable/c/00cbdec17c15d024a1c5002c7365df7624a18a75
• https://git.kernel.org/stable/c/4b03ab0a587ec57eb7ddb5c115d84a42896f60f7
• https://git.kernel.org/stable/c/62397b493e14107ae82d8b80938f293d95425bcb