Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 4d75bc2cd093bf5803edf512c099bfb220fd6459; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7d6a57411caf54df025860c9b1a82cd42d57a562; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d5603591373441fecf9951833d6d873e09320f08; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 288138418bef956f8b295751a4536c60f0e89f4a; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9eda5478746ef7dc0e4e537b5a5e4b0ca1027091; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 807d6ee15804df6f01a35c910f09612e858739a6; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 309ae3e9a51a69699ca94eac5fac5688fa562d55; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before fdce0b3590f724540795b874b4c8850c90e6b0a8 |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.