CVE-2026-31642 (GCVE-0-2026-31642)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-04-24 14:44
VLAI?
Title
rxrpc: Fix call removal to use RCU safe deletion
Summary
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix call removal to use RCU safe deletion Fix rxrpc call removal from the rxnet->calls list to use list_del_rcu() rather than list_del_init() to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an infinite loop. This, however, means that list_empty() no longer works on an entry that's been deleted from the list, making it harder to detect prior deletion. Fix this by: Firstly, make rxrpc_destroy_all_calls() only dump the first ten calls that are unexpectedly still on the list. Limiting the number of steps means there's no need to call cond_resched() or to remove calls from the list here, thereby eliminating the need for rxrpc_put_call() to check for that. rxrpc_put_call() can then be fixed to unconditionally delete the call from the list as it is the only place that the deletion occurs.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < 93fc15be44a35b8e3c58d0238ac0d9b7c53465ff (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < c63abf25203b50243fe228090526f9dbf37727bd (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < 3be718f659683ad89fad6f1eb66bee99727cae64 (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < ac5f54691be06a32246179d41be2d73598036deb (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < 146d4ab94cf129ee06cd467cb5c71368a6b5bad6 (git)
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    Linux Linux Affected: 4.13
Unaffected: 0 , < 4.13 (semver)
Unaffected: 6.6.135 , ≤ 6.6.* (semver)
Unaffected: 6.12.82 , ≤ 6.12.* (semver)
Unaffected: 6.18.23 , ≤ 6.18.* (semver)
Unaffected: 6.19.13 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "include/trace/events/rxrpc.h",
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          "value": "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-\u003ecalls 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\u0027s\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\u0027s 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."
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        "dateUpdated": "2026-04-24T14:44:56.888Z",
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          "url": "https://git.kernel.org/stable/c/146d4ab94cf129ee06cd467cb5c71368a6b5bad6"
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    "dateReserved": "2026-03-09T15:48:24.127Z",
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  }
}


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