Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop The ah, hbh and rt matches check that the fixed extension header is present, then use the header length field to derive the advertised extension header length for matching. For the ah match, add the missing advertised-length check. For hbh and rt, update the existing advertised-length checks. In all three cases, set hotdrop to true before returning false when the advertised extension header length exceeds the available skb data. Returning false treats the packet as a rule mismatch. Set hotdrop to true and drop malformed packets so they cannot bypass rules intended to drop packets with these IPv6 extension headers.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f16d856b6af5fd0e7cb0b0212f70825b599ef72eaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < fc416870100cf16d5b9495199355a679c3a02d48affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f775fcf384b06f35b612f78fa5601fee99eb6513affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2fd89a50a9783eed8ed23866b11c8b3d8779a7a8affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3578b6d92a5b1e603ae6e8c8f5538a709f03aba4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3d441be2b1c5e98167302fa1c7b61960a067b112affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d5e39e5eb6b30bc4a3bb7aba54c293cf36a806c7affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 43ccc20b5a733226417832cf16ef45322e594990affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/f16d856b6af5fd0e7cb0b0212f70825b599ef72e ↗
- https://git.kernel.org/stable/c/fc416870100cf16d5b9495199355a679c3a02d48 ↗
- https://git.kernel.org/stable/c/f775fcf384b06f35b612f78fa5601fee99eb6513 ↗
- https://git.kernel.org/stable/c/2fd89a50a9783eed8ed23866b11c8b3d8779a7a8 ↗
- https://git.kernel.org/stable/c/3578b6d92a5b1e603ae6e8c8f5538a709f03aba4 ↗
- https://git.kernel.org/stable/c/3d441be2b1c5e98167302fa1c7b61960a067b112 ↗
- https://git.kernel.org/stable/c/d5e39e5eb6b30bc4a3bb7aba54c293cf36a806c7 ↗
- https://git.kernel.org/stable/c/43ccc20b5a733226417832cf16ef45322e594990 ↗