CVE-2026-97417
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()
The timestamp-only fast path dereferences the option stream as *(__be32 *)ptr, which assumes 4-byte alignment that the TCP option stream does not guarantee. Use get_unaligned_be32() instead, which reads the value safely and already returns host byte order, so the htonl() on the comparison constant can be dropped.
This matches the existing get_unaligned_be32() use later in the same function.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 < 7ecfa46a536578a7ed335ddf31a854127268c27c | affected |
| Linux | Linux | bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 < 4abc1af7ac209c066f4e5dd75cdd56876e5829a9 | affected |
| Linux | Linux | bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9 < d3bf9eae486490832bd08fd62ab0ac601f346bd4 | affected |
| Linux | Linux | 3.1 | affected |
| Linux | Linux | 0 < 3.1 | unaffected |
| Linux | Linux | 6.12.111 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.53 <= 6.18.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/7ecfa46a536578a7ed335ddf31a854127268c27c
- https://git.kernel.org/stable/c/4abc1af7ac209c066f4e5dd75cdd56876e5829a9
- https://git.kernel.org/stable/c/d3bf9eae486490832bd08fd62ab0ac601f346bd4
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