CVE-2024-26818

Local rtla crash via overlong mount-point parsing

Published Apr 17, 2024 · Updated May 11, 2026

A stack-based buffer overflow in Linux rtla allows local users to crash the tool by supplying an overlong mount-point token. The find_mount function passes a 1024-byte stack buffer to fscanf with a conversion that can write 1024 characters plus a terminating null byte. Reachability requires local low-privilege access and execution of rtla against a mount table containing the oversized token.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack-based buffer overflow in Linux rtla allows local users to crash the tool by supplying an overlong mount-point token. The find_mount function passes a 1024-byte stack buffer to fscanf with a conversion that can write 1024 characters plus a terminating null byte. Reachability requires local low-privilege access and execution of rtla against a mount table containing the oversized token.

The record

CVE
CVE-2024-26818
Published
Apr 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 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=6.5
  2. Affected versionversion=a957cbc02531a23beeac6dd9e751f8d4dadaf7a9 <30369084ac6e27479a347899e74f523e6ca29b89
  3. Affected versionversion=a957cbc02531a23beeac6dd9e751f8d4dadaf7a9 <6bdd43f62ab3bb5a306af7f0ab857af45777f5a8
  4. Affected versionversion=a957cbc02531a23beeac6dd9e751f8d4dadaf7a9 <8a585914c266dc044f53b5c83c170f79b45fcf9a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=a957cbc02531a23beeac6dd9e751f8d4dadaf7a9 <30369084ac6e27479a347899e74f523e6ca29b89; version=a957cbc02531a23beeac6dd9e751f8d4dadaf7a9 <6bdd43f62ab3bb5a306af7f0ab857af45777f5a8; version=a957cbc02531a23beeac6dd9e751f8d4dadaf7a9 <8a585914c266dc044f53b5c83c170f79b45fcf9a

Published CVSS scores

5.5NIST NVDCVSS: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.

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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

T1499.004Application or System Exploitation

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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