CVE-2024-46713

Local privilege escalation via AUX buffer race

Published Sep 13, 2024 · Updated Aug 5, 2026

Race condition in affected Linux kernel releases allows local users to disclose memory, corrupt kernel data, or crash the system. The shared event mmap mutex fails to serialize concurrent mmap and close operations on a linked AUX ring buffer, permitting use-after-free, double-free, and reference-count corruption. A low-privileged local user needs access to perf_event_open and can retry the race without user interaction, gaining kernel memory read/write primitives or causing a panic.

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

What happened

Race condition in affected Linux kernel releases allows local users to disclose memory, corrupt kernel data, or crash the system. The shared event mmap mutex fails to serialize concurrent mmap and close operations on a linked AUX ring buffer, permitting use-after-free, double-free, and reference-count corruption. A low-privileged local user needs access to perf_event_open and can retry the race without user interaction, gaining kernel memory read/write primitives or causing a panic.

The record

CVE
CVE-2024-46713
Published
Sep 13, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 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=4.1
  2. Affected versionversion=45bfb2e50471abbbfd83d40d28c986078b0d24ff <2ab9d830262c132ab5db2f571003d80850d56b2a
  3. Affected versionversion=45bfb2e50471abbbfd83d40d28c986078b0d24ff <52d13d224fdf1299c8b642807fa1ea14d693f5ff
  4. Affected versionversion=45bfb2e50471abbbfd83d40d28c986078b0d24ff <7882923f1cb88dc1a17f2bf0c81b1fc80d44db82
  5. Affected versionversion=45bfb2e50471abbbfd83d40d28c986078b0d24ff <9dc7ad2b67772cfb94ceb3b0c9c4023c2463215d
  6. Affected versionversion=45bfb2e50471abbbfd83d40d28c986078b0d24ff <b9b6882e243b653d379abbeaa64a500182aba370
  7. Affected versionversion=45bfb2e50471abbbfd83d40d28c986078b0d24ff <c4b69bee3f4ef76809288fe6827bc14d4ae788ef

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.1; version=45bfb2e50471abbbfd83d40d28c986078b0d24ff <2ab9d830262c132ab5db2f571003d80850d56b2a; version=45bfb2e50471abbbfd83d40d28c986078b0d24ff <52d13d224fdf1299c8b642807fa1ea14d693f5ff; version=45bfb2e50471abbbfd83d40d28c986078b0d24ff <7882923f1cb88dc1a17f2bf0c81b1fc80d44db82; version=45bfb2e50471abbbfd83d40d28c986078b0d24ff <9dc7ad2b67772cfb94ceb3b0c9c4023c2463215d; version=45bfb2e50471abbbfd83d40d28c986078b0d24ff <b9b6882e243b653d379abbeaa64a500182aba370; version=45bfb2e50471abbbfd83d40d28c986078b0d24ff <c4b69bee3f4ef76809288fe6827bc14d4ae788ef

Published CVSS scores

7.8Linux 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 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

T1068Exploitation for Privilege Escalation

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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