{"id":"CVE-2026-31642","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix call removal to use RCU safe deletion\n\nFix rxrpc call removal from the rxnet->calls list to use list_del_rcu()\nrather than list_del_init() to prevent stuffin…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix call removal to use RCU safe deletion\n\nFix rxrpc call removal from the rxnet->calls list to use list_del_rcu()\nrather than list_del_init() to prevent stuffin…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-835"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.13.1, < 6.6.135","linux_kernel >= 6.7, < 6.12.82","linux_kernel >= 6.13, < 6.18.23","linux_kernel >= 6.19, < 6.19.13","linux_kernel = 4.13","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.13"],"published":"2026-04-24","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:14.617","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-31642","references":[{"url":"https://git.kernel.org/stable/c/146d4ab94cf129ee06cd467cb5c71368a6b5bad6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/280efb85e9759881a9d31d0874baa04583cb6c09","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3be718f659683ad89fad6f1eb66bee99727cae64","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3e47a38e584b905359fe0ce5be5165d1e8592a90","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/93fc15be44a35b8e3c58d0238ac0d9b7c53465ff","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ac5f54691be06a32246179d41be2d73598036deb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b15b1ce96777b88989a6a4de8d01efbcd81ad2d7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c63abf25203b50243fe228090526f9dbf37727bd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00162,"epssPercentile":0.05015,"ingestedAt":"2026-10-15T03:30:12.862Z","slug":"CVE-2026-31642","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix call removal to use RCU safe deletion\n\nFix rxrpc call removal from the rxnet->calls list to use list_del_rcu()\nrather than list_del_init() to prevent stuffing up reading\n/proc/net/rxrpc/calls from potentially getting into an infinite loop.\n\nThis, however, means that list_empty() no longer works on an entry that's\nbeen deleted from the list, making it harder to detect prior deletion.  Fix\nthis by:\n\nFirstly, make rxrpc_destroy_all_calls() only dump the first ten calls that\nare unexpectedly still on the list.  Limiting the number of steps means\nthere's no need to call cond_resched() or to remove calls from the list\nhere, thereby eliminating the need for rxrpc_put_call() to check for that.\n\nrxrpc_put_call() can then be fixed to unconditionally delete the call from\nthe list as it is the only place that the deletion occurs.\n\n## Affected\n\n- `linux_kernel >= 4.13.1, < 6.6.135`\n- `linux_kernel >= 6.7, < 6.12.82`\n- `linux_kernel >= 6.13, < 6.18.23`\n- `linux_kernel >= 6.19, < 6.19.13`\n- `linux_kernel = 4.13`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.13`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}