{"id":"CVE-2026-72451","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-72451","generatedAt":"2026-10-28T09:42:25.865Z","title":"In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix xfrm state cache insertion race The xfrm input state cache insertion code checks the validity of the state before acquiring the global xfrm_state_lock.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: Fix xfrm state cache insertion race\n\nThe xfrm input state cache insertion code checks the validity of\nthe state before acquiring the global xfrm_state_lock.  Thus it's\npossible for someone else to kill the state after it passed the\nvalidity check, and then the insertion will add the dead state\nto the cache.\n\nFix this by moving the validity check inside the lock.\n\nThis entire function is called on the input path, where BH must\nbe off (e.g., the caller of this function xfrm_input acquires\nits spinlocks without disabling BH).\n\nSo there is no need to disable BH here or take the RCU read lock.\nRemove both and replace them with an assertion that trips if BH\nis accidentally enabled on some future calling path.","published":"2026-08-15T06:22:19.000Z","lastModified":"2026-08-17T06:19:13.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":[],"epss":{"score":0.00671,"percentile":0.51831,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/041859fd55c81ea55e76d051e39b7b79975b8c7d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6dab4dec9a49121d079981ac913569f232c06b06","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a1a3360a0c44b8b5c134db2a9d0667b61c9cf523","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ddd3d0132920319ac426e12456013eadbae67e15","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72451","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}