CVE-2024-50294

Call hangs via unlocked RxRPC list removal

Published Nov 19, 2024 · Updated Aug 5, 2026

Improper locking in RxRPC in affected Linux kernel releases allows local users to hang calls by aborting during connection setup. rxrpc_disconnect_client_call() removes an aborted call's wait_link from local->new_client_calls without holding client_call_lock, so a concurrent removal can unlink other queued calls. A local low-privileged user must win the abort-versus-I/O-thread race; affected calls can disappear from the queue and hang indefinitely.

CVSS severity4.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in RxRPC in affected Linux kernel releases allows local users to hang calls by aborting during connection setup. rxrpc_disconnect_client_call() removes an aborted call's wait_link from local->new_client_calls without holding client_call_lock, so a concurrent removal can unlink other queued calls. A local low-privileged user must win the abort-versus-I/O-thread race; affected calls can disappear from the queue and hang indefinitely.

The record

CVE
CVE-2024-50294
Published
Nov 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.2
  2. Affected versionversion=9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d <996a7208dadbf2cdda8d51444d5ee1fdd1ccbc92
  3. Affected versionversion=9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d <b1fdb0bb3b6513f5bd26f92369fd6ac1a2422d8b
  4. Affected versionversion=9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d <fc9de52de38f656399d2ce40f7349a6b5f86e787

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d <996a7208dadbf2cdda8d51444d5ee1fdd1ccbc92; version=9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d <b1fdb0bb3b6513f5bd26f92369fd6ac1a2422d8b; version=9d35d880e0e4a3ab32d8c12f9e4d76198aadd42d <fc9de52de38f656399d2ce40f7349a6b5f86e787

Published CVSS scores

4.7CISA ADPCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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