Description
In the Linux kernel, the following vulnerability has been resolved:
xfrm: validate selector family and prefixlen during match
syzbot reported a shift-out-of-bounds in xfrm_selector_match() due to AF_UNSPEC selector with large prefixlen (e.g. 128) matched against IPv4 flow (when XFRM_STATE_AF_UNSPEC is set).
Fix this by:
- Rejecting mismatched families in xfrm_selector_match. - Returning false in addr4_match if prefixlen > 32. - Returning false in addr_match if prefixlen > 128 (prevents overflow).
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 8df5cd51fd70c33aa1776e5cbcd82b0a86649d73, < 87a5bbccc7ff4edb3f42fea387124237d2ba91ee; >= 2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71, < bd7f202cf77556cff59f68dc30e4cdf40cb6e33b; >= bce1afaa212ec380bf971614f70909a27882b862, < a3968ad4195d72c8fddcc6c0ef39da95ac98711a; >= 7d9868180bd1e4cf37e7c5067362658971162366, < efa9e3b9f3dea2e1ea4c7edf4edc863faef85986; >= 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563, < 78783fefdc8f36879b1a17efa0d3195ea5f2dc5f; >= 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563, < 6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe; >= 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563, < 5a03a2ee17e8259dde631ed84fd8322db06cb2ae; >= 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563, < 40f0b1047918539f0b0f795ac65e35336b4c2c78; f31398570acf0f0804c644006f7bfa9067106b0a; 401ad99a5ae7180dd9449eac104cb755f442e7f3; e68dd80ba498265d2266b12dc3459164f4ff0c4a; >= 5.10.229, < 5.10.261; >= 5.15.170, < 5.15.212; >= 6.1.115, < 6.1.178; >= 6.6.59, < 6.6.145; >= 4.19.323, < 4.20; >= 5.4.285, < 5.5; >= 6.11.6, < 6.12 |
| Linux | Linux | 6.12 |
References
- https://git.kernel.org/stable/c/40f0b1047918539f0b0f795ac65e35336b4c2c78
- https://git.kernel.org/stable/c/5a03a2ee17e8259dde631ed84fd8322db06cb2ae
- https://git.kernel.org/stable/c/6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe
- https://git.kernel.org/stable/c/78783fefdc8f36879b1a17efa0d3195ea5f2dc5f
- https://git.kernel.org/stable/c/87a5bbccc7ff4edb3f42fea387124237d2ba91ee
- https://git.kernel.org/stable/c/a3968ad4195d72c8fddcc6c0ef39da95ac98711a
- https://git.kernel.org/stable/c/bd7f202cf77556cff59f68dc30e4cdf40cb6e33b
- https://git.kernel.org/stable/c/efa9e3b9f3dea2e1ea4c7edf4edc863faef85986
Timeline
- Published
- Aug 15, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Received