Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_eui64: reject invalid MAC header for all packets `eui64_mt6()` derives a modified EUI-64 from the Ethernet source address and compares it with the low 64 bits of the IPv6 source address. The existing guard only rejects an invalid MAC header when `par->fragoff != 0`. For packets with `par->fragoff == 0`, `eui64_mt6()` can still reach `eth_hdr(skb)` even when the MAC header is not valid. Fix this by removing the `par->fragoff != 0` condition so that packets with an invalid MAC header are rejected before accessing `eth_hdr(skb)`.
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 < 4d75bc2cd093bf5803edf512c099bfb220fd6459affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7d6a57411caf54df025860c9b1a82cd42d57a562affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d5603591373441fecf9951833d6d873e09320f08affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 288138418bef956f8b295751a4536c60f0e89f4aaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9eda5478746ef7dc0e4e537b5a5e4b0ca1027091affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 807d6ee15804df6f01a35c910f09612e858739a6affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 309ae3e9a51a69699ca94eac5fac5688fa562d55affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < fdce0b3590f724540795b874b4c8850c90e6b0a8affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.136 to ≤ 6.6.*unaffected6.12.83 to ≤ 6.12.*unaffected6.18.24 to ≤ 6.18.*unaffected6.19.14 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/4d75bc2cd093bf5803edf512c099bfb220fd6459 ↗
- https://git.kernel.org/stable/c/7d6a57411caf54df025860c9b1a82cd42d57a562 ↗
- https://git.kernel.org/stable/c/d5603591373441fecf9951833d6d873e09320f08 ↗
- https://git.kernel.org/stable/c/288138418bef956f8b295751a4536c60f0e89f4a ↗
- https://git.kernel.org/stable/c/9eda5478746ef7dc0e4e537b5a5e4b0ca1027091 ↗
- https://git.kernel.org/stable/c/807d6ee15804df6f01a35c910f09612e858739a6 ↗
- https://git.kernel.org/stable/c/309ae3e9a51a69699ca94eac5fac5688fa562d55 ↗
- https://git.kernel.org/stable/c/fdce0b3590f724540795b874b4c8850c90e6b0a8 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗