CVE-2024-47711

Kernel crash via stale AF_UNIX OOB socket buffer

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in Linux 6.9.8 through 6.11.1 allows local users to crash the kernel via crafted AF_UNIX out-of-band messages. manage_oob() can return a second OOB socket buffer without clearing unix_sk(sk)->oob_skb after the prior buffer is consumed, leaving unix_stream_recv_urg() to dereference freed memory. Any unprivileged local process can trigger the deterministic socket sequence; the demonstrated consequence is a kernel oops or panic.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux 6.9.8 through 6.11.1 allows local users to crash the kernel via crafted AF_UNIX out-of-band messages. manage_oob() can return a second OOB socket buffer without clearing unix_sk(sk)->oob_skb after the prior buffer is consumed, leaving unix_stream_recv_urg() to dereference freed memory. Any unprivileged local process can trigger the deterministic socket sequence; the demonstrated consequence is a kernel oops or panic.

The record

CVE
CVE-2024-47711
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 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=6.10
  2. Affected versionversion=6.9.8 <6.10
  3. Affected versionversion=71f8d9a4f6e094bae951765d1d18b44827013001
  4. Affected versionversion=93c99f21db360957d49853e5666b5c147f593bda <4a7f9a2591a923bdde4bd7eac33490b6ae3b257c
  5. Affected versionversion=93c99f21db360957d49853e5666b5c147f593bda <5aa57d9f2d5311f19434d95b2a81610aa263e23b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=6.9.8 <6.10; version=71f8d9a4f6e094bae951765d1d18b44827013001; version=93c99f21db360957d49853e5666b5c147f593bda <4a7f9a2591a923bdde4bd7eac33490b6ae3b257c; version=93c99f21db360957d49853e5666b5c147f593bda <5aa57d9f2d5311f19434d95b2a81610aa263e23b

Published CVSS scores

7.8Linux Kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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