CVE-2024-49941

Invalid GPIO label output via NULL dereference

Published Oct 21, 2024 · Updated May 11, 2026

NULL pointer dereference in gpiolib in Linux kernel 6.9 through 6.11.2 allows local users to obtain invalid GPIO labels through debugfs. The gpiod_get_label() function accesses label->str after srcu_dereference_check() can return NULL while the GPIO state file is being dumped. Access requires the GPIO debugfs view and an IRQ-used descriptor with a NULL label; the documented result is "(efault)," rather than a demonstrated kernel crash.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in gpiolib in Linux kernel 6.9 through 6.11.2 allows local users to obtain invalid GPIO labels through debugfs. The gpiod_get_label() function accesses label->str after srcu_dereference_check() can return NULL while the GPIO state file is being dumped. Access requires the GPIO debugfs view and an IRQ-used descriptor with a NULL label; the documented result is "(efault)," rather than a demonstrated kernel crash.

The record

CVE
CVE-2024-49941
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=6.9
  2. Affected versionversion=a86d27693066a34a29be86f394bbad847b2d1749 <7b99b5ab885993bff010ebcd93be5e511c56e28a
  3. Affected versionversion=a86d27693066a34a29be86f394bbad847b2d1749 <9ee4b907d7a5d7a53b4ff7727c371ff3d44ccbbb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.9; version=a86d27693066a34a29be86f394bbad847b2d1749 <7b99b5ab885993bff010ebcd93be5e511c56e28a; version=a86d27693066a34a29be86f394bbad847b2d1749 <9ee4b907d7a5d7a53b4ff7727c371ff3d44ccbbb

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

CWE-476NULL Pointer Dereference

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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