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).

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

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["include/net/xfrm.h","net/xfrm/xfrm_policy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"8df5cd51fd70c33aa1776e5cbcd82b0a86649d73","lessThan":"87a5bbccc7ff4edb3f42fea387124237d2ba91ee","versionType":"git","status":"affected"},{"version":"2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71","lessThan":"bd7f202cf77556cff59f68dc30e4cdf40cb6e33b","versionType":"git","status":"affected"},{"version":"bce1afaa212ec380bf971614f70909a27882b862","lessThan":"a3968ad4195d72c8fddcc6c0ef39da95ac98711a","versionType":"git","status":"affected"},{"version":"7d9868180bd1e4cf37e7c5067362658971162366","lessThan":"efa9e3b9f3dea2e1ea4c7edf4edc863faef85986","versionType":"git","status":"affected"},{"version":"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563","lessThan":"78783fefdc8f36879b1a17efa0d3195ea5f2dc5f","versionType":"git","status":"affected"},{"version":"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563","lessThan":"6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe","versionType":"git","status":"affected"},{"version":"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563","lessThan":"5a03a2ee17e8259dde631ed84fd8322db06cb2ae","versionType":"git","status":"affected"},{"version":"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563","lessThan":"40f0b1047918539f0b0f795ac65e35336b4c2c78","versionType":"git","status":"affected"},{"version":"f31398570acf0f0804c644006f7bfa9067106b0a","versionType":"git","status":"affected"},{"version":"401ad99a5ae7180dd9449eac104cb755f442e7f3","versionType":"git","status":"affected"},{"version":"e68dd80ba498265d2266b12dc3459164f4ff0c4a","versionType":"git","status":"affected"},{"version":"5.10.229","lessThan":"5.10.261","versionType":"semver","status":"affected"},{"version":"5.15.170","lessThan":"5.15.212","versionType":"semver","status":"affected"},{"version":"6.1.115","lessThan":"6.1.178","versionType":"semver","status":"affected"},{"version":"6.6.59","lessThan":"6.6.145","versionType":"semver","status":"affected"},{"version":"4.19.323","lessThan":"4.20","versionType":"semver","status":"affected"},{"version":"5.4.285","lessThan":"5.5","versionType":"semver","status":"affected"},{"version":"6.11.6","lessThan":"6.12","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["include/net/xfrm.h","net/xfrm/xfrm_policy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"6.12","status":"affected"},{"version":"0","lessThan":"6.12","versionType":"semver","status":"unaffected"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc1","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]