CVE-2024-53090

Kernel oops via AFS lock recursion

Published Nov 21, 2024 · Updated Aug 5, 2026

Uncontrolled recursion in Linux kernel AFS 4.15 through 6.11.8 allows local users to trigger a kernel oops during AF_RXRPC call processing. The afs_wake_up_async_call() path takes an afs_call reference while AF_RXRPC holds notify_lock; dropping an extra reference reenters rxrpc_kernel_shutdown_call() and reacquires that lock. Local low-privileged access and an already-queued AFS call are required; panic_on_oops configuration turns the oops into a host panic.

CVSS severity5.5
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in Linux kernel AFS 4.15 through 6.11.8 allows local users to trigger a kernel oops during AF_RXRPC call processing. The afs_wake_up_async_call() path takes an afs_call reference while AF_RXRPC holds notify_lock; dropping an extra reference reenters rxrpc_kernel_shutdown_call() and reacquires that lock. Local low-privileged access and an already-queued AFS call are required; panic_on_oops configuration turns the oops into a host panic.

The record

CVE
CVE-2024-53090
Published
Nov 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-674, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 21, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=20acbd9a7aeee0b0af7107f3de791a52c949f3ac <610a79ffea02102899a1373fe226d949944a7ed6
  2. Affected versionversion=20acbd9a7aeee0b0af7107f3de791a52c949f3ac <d7cbf81df996b1eae2dee8deb6df08e2eba78661
  3. Affected versionversion=4.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=20acbd9a7aeee0b0af7107f3de791a52c949f3ac <610a79ffea02102899a1373fe226d949944a7ed6; version=20acbd9a7aeee0b0af7107f3de791a52c949f3ac <d7cbf81df996b1eae2dee8deb6df08e2eba78661; version=4.15

Published CVSS scores

5.5CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-674Uncontrolled Recursion
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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