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

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-05-11 22:12
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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    "dateReserved": "2026-03-09T15:48:24.127Z",
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  }
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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