CVE-2026-72450
High
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).
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux
PublishedAug 15, 2026
First seenAug 15, 2026
How to fix
Update
- Linux Linux87a5bbccc7ff4edb3f42fea387124237d2ba91ee, bd7f202cf77556cff59f68dc30e4cdf40cb6e33b, a3968ad4195d72c8fddcc6c0ef39da95ac98711a, efa9e3b9f3dea2e1ea4c7edf4edc863faef85986, 78783fefdc8f36879b1a17efa0d3195ea5f2dc5f, 6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe, 5a03a2ee17e8259dde631ed84fd8322db06cb2ae, 40f0b1047918539f0b0f795ac65e35336b4c2c78, 5.10.261, 5.15.212, 6.1.178, 6.6.145, 4.20, 5.5, 6.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8df5cd51fd70c33aa1776e5cbcd82b0a86649d73 ≤ v < 87a5bbccc7ff4edb3f42fea387124237d2ba91ee, 2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71 ≤ v < bd7f202cf77556cff59f68dc30e4cdf40cb6e33b, bce1afaa212ec380bf971614f70909a27882b862 ≤ v < a3968ad4195d72c8fddcc6c0ef39da95ac98711a, 7d9868180bd1e4cf37e7c5067362658971162366 ≤ v < efa9e3b9f3dea2e1ea4c7edf4edc863faef85986, 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 ≤ v < 78783fefdc8f36879b1a17efa0d3195ea5f2dc5f, 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 ≤ v < 6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe, 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 ≤ v < 5a03a2ee17e8259dde631ed84fd8322db06cb2ae, 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 ≤ v < 40f0b1047918539f0b0f795ac65e35336b4c2c78, f31398570acf0f0804c644006f7bfa9067106b0a, 401ad99a5ae7180dd9449eac104cb755f442e7f3, e68dd80ba498265d2266b12dc3459164f4ff0c4a, 5.10.229 ≤ v < 5.10.261, 5.15.170 ≤ v < 5.15.212, 6.1.115 ≤ v < 6.1.178, 6.6.59 ≤ v < 6.6.145, 4.19.323 ≤ v < 4.20, 5.4.285 ≤ v < 5.5, 6.11.6 ≤ v < 6.12, 6.12 | 87a5bbccc7ff4edb3f42fea387124237d2ba91ee, bd7f202cf77556cff59f68dc30e4cdf40cb6e33b, a3968ad4195d72c8fddcc6c0ef39da95ac98711a, efa9e3b9f3dea2e1ea4c7edf4edc863faef85986, 78783fefdc8f36879b1a17efa0d3195ea5f2dc5f, 6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe, 5a03a2ee17e8259dde631ed84fd8322db06cb2ae, 40f0b1047918539f0b0f795ac65e35336b4c2c78, 5.10.261, 5.15.212, 6.1.178, 6.6.145, 4.20, 5.5, 6.12 |
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