CVE-2024-35970

Garbage-collection deadlock via stale OOB pointer

Published May 20, 2024 · Updated May 11, 2026

Deadlock in affected Linux kernel revisions allows local users to hang AF_UNIX garbage collection through crafted OOB socket traffic. The manage_oob() path dequeues an OOB skb during recvmsg() without MSG_OOB but fails to clear unix_sock(sk)->oob_skb, leaving a stale reference that misleads polling and socket garbage collection. Exploitation requires local code able to create AF_UNIX sockets, pass a socket descriptor to itself as OOB data, block a normal receive, and close the sockets asynchronously; the resulting deadlock or persistent garbage can interrupt availability.

CVSS severity6.3
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in affected Linux kernel revisions allows local users to hang AF_UNIX garbage collection through crafted OOB socket traffic. The manage_oob() path dequeues an OOB skb during recvmsg() without MSG_OOB but fails to clear unix_sock(sk)->oob_skb, leaving a stale reference that misleads polling and socket garbage collection. Exploitation requires local code able to create AF_UNIX sockets, pass a socket descriptor to itself as OOB data, block a normal receive, and close the sockets asynchronously; the resulting deadlock or persistent garbage can interrupt availability.

The record

CVE
CVE-2024-35970
Published
May 20, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=314001f0bf927015e459c9d387d62a231fe93af3 <601a89ea24d05089debfa2dc896ea9f5937ac7a6
  2. Affected versionversion=314001f0bf927015e459c9d387d62a231fe93af3 <698a95ade1a00e6494482046902b986dfffd1caf
  3. Affected versionversion=314001f0bf927015e459c9d387d62a231fe93af3 <84a352b7eba1142a95441380058985ff19f25ec9
  4. Affected versionversion=314001f0bf927015e459c9d387d62a231fe93af3 <b46f4eaa4f0ec38909fb0072eea3aeddb32f954e
  5. Affected versionversion=314001f0bf927015e459c9d387d62a231fe93af3 <b4bc99d04c689b5652665394ae8d3e02fb754153
  6. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=314001f0bf927015e459c9d387d62a231fe93af3 <601a89ea24d05089debfa2dc896ea9f5937ac7a6; version=314001f0bf927015e459c9d387d62a231fe93af3 <698a95ade1a00e6494482046902b986dfffd1caf; version=314001f0bf927015e459c9d387d62a231fe93af3 <84a352b7eba1142a95441380058985ff19f25ec9; version=314001f0bf927015e459c9d387d62a231fe93af3 <b46f4eaa4f0ec38909fb0072eea3aeddb32f954e; version=314001f0bf927015e459c9d387d62a231fe93af3 <b4bc99d04c689b5652665394ae8d3e02fb754153; version=5.15

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

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Technologies

Your stack

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Your stack

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