CVE-2026-80805: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: xfs: validate attr entry pointer before field access xfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen, valuelen) before checking if the entry pointer itself is within bounds. If nameidx is crafted to point near the end of the buffer, these field accesses can read out-of-bounds before the bounds check at name_end > buf_end is performed. Add explicit bounds checks for entry pointers before accessing their fields. Use offsetof() to check that the start of the flexible array member (nameval/name) is within bounds, which ensures all preceding fields are safe to access.

Засегнати продукти

• Linux Linux: c84760659dcf237902d4cc997cd5f55cb3b2807f преди 0f82586741e39926542f621bafa424e237a04fa4; c84760659dcf237902d4cc997cd5f55cb3b2807f преди 134d82a2b5e3eba3ebf58753a1387b22f26ca1de; c84760659dcf237902d4cc997cd5f55cb3b2807f преди 03a12253dd2a036545bdb0110a4e0b8dc70f8e7c; c84760659dcf237902d4cc997cd5f55cb3b2807f преди e99120b5944a16d0bc27e52b33de78bcdaaabf5c; c84760659dcf237902d4cc997cd5f55cb3b2807f преди 98a42bb9d60d42898c3494de351a1bf508348cde; c84760659dcf237902d4cc997cd5f55cb3b2807f преди 184c1a80421a5b5ddcd262e47980ce2e67fee211; c84760659dcf237902d4cc997cd5f55cb3b2807f преди 9f92e749fc08b7ff3d9da190c4d1b2273745b282; c84760659dcf237902d4cc997cd5f55cb3b2807f преди c35da2bac6f7cb9a9be73f188b4fcc324615c327; c84760659dcf237902d4cc997cd5f55cb3b2807f преди b7eea80be25f3334f131d52982b3131aba77b97d
• Linux Linux: 5.5; преди 5.5; 5.10.267 до 5.10.*; 5.15.218 до 5.15.*; 6.1.185 до 6.1.*; 6.6.154 до 6.6.*; 6.12.106 до 6.12.*; 6.18.47 до 6.18.*; 7.1.11 до 7.1.*; 7.2.1 до 7.2.*; от 7.3 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-2026-80805
• https://nvd.nist.gov/vuln/detail/CVE-2026-80805
• https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4
• https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de
• https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c
• https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c
• https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde
• https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211
• https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282
• https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327
• https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d