In the Linux kernel, the following vulnerability has been resolved: xfrm: validate selector family and prefixlen during match syzbot re…
CVE-2026-72450 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-72450?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 6.12
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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).
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/40f0b1047918539f0b0f795ac65e35336b4c2c78
- git.kernel.org/stable/c/5a03a2ee17e8259dde631ed84fd8322db06cb2ae
- git.kernel.org/stable/c/6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe
- git.kernel.org/stable/c/78783fefdc8f36879b1a17efa0d3195ea5f2dc5f
- git.kernel.org/stable/c/87a5bbccc7ff4edb3f42fea387124237d2ba91ee
- git.kernel.org/stable/c/a3968ad4195d72c8fddcc6c0ef39da95ac98711a
- git.kernel.org/stable/c/bd7f202cf77556cff59f68dc30e4cdf40cb6e33b
- git.kernel.org/stable/c/efa9e3b9f3dea2e1ea4c7edf4edc863faef85986
Merged from NVD. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON