CVE-2026-80844: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: xfrm: ah6: validate routing header segments_left AH6 rearranges routing-header addresses before computing or verifying the ICV. ipv6_rearrange_rthdr() assumes that segments_left is not larger than the number of addresses described by the routing header's hdrlen field. That assumption does not hold for raw IPv6 HDRINCL packets. A packet with hdrlen equal to 2 describes one address, but can carry an arbitrary segments_left value. With segments_left equal to 255, the function moves its address pointer 4,064 bytes backwards and passes a 4,064-byte length to memmove(), resulting in an out-of-bounds access. Validate the invariant locally before modifying the routing header or performing any address-pointer arithmetic, and propagate malformed-header errors to the existing AH6 input and output error paths.

Засегнати продукти

• Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 2dc650956e4e163b879b3fb1027f9557abc5c985; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 48b0e36cf54358276ee7aa897034c973097d2bc9; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 1b7e066eabcc7d6d8f476c34739b45932f2f4c31; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди f00df8500e5a36ba70d336fd34bd2152ea074e5f; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 1516e31ac458a738be485620579d8f7fb2700fcb; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 6733ae71268a27d598cfb3f3339a3c950b9b656d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 0bf11081ad3753938a2b48723ce6298dbac743a1; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 46640c814f25f096b0b0045ca50e1b7030cd8a30; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 7bad4bda74dc4713f398d3b7624ff05478e3a568
• Linux Linux: 2.6.12; преди 2.6.12; 5.10.269 до 5.10.*; 5.15.220 до 5.15.*; 6.1.187 до 6.1.*; 6.6.156 до 6.6.*; 6.12.108 до 6.12.*; 6.18.49 до 6.18.*; 7.1.13 до 7.1.*; 7.2.3 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-2026-80844
• https://nvd.nist.gov/vuln/detail/CVE-2026-80844
• https://git.kernel.org/stable/c/2dc650956e4e163b879b3fb1027f9557abc5c985
• https://git.kernel.org/stable/c/48b0e36cf54358276ee7aa897034c973097d2bc9
• https://git.kernel.org/stable/c/1b7e066eabcc7d6d8f476c34739b45932f2f4c31
• https://git.kernel.org/stable/c/f00df8500e5a36ba70d336fd34bd2152ea074e5f
• https://git.kernel.org/stable/c/1516e31ac458a738be485620579d8f7fb2700fcb
• https://git.kernel.org/stable/c/6733ae71268a27d598cfb3f3339a3c950b9b656d
• https://git.kernel.org/stable/c/0bf11081ad3753938a2b48723ce6298dbac743a1
• https://git.kernel.org/stable/c/46640c814f25f096b0b0045ca50e1b7030cd8a30
• https://git.kernel.org/stable/c/7bad4bda74dc4713f398d3b7624ff05478e3a568