CVE-2026-72241

Local kernel crash via unterminated uleds name

Published Aug 15, 2026 · Updated Aug 15, 2026

Buffer overread in Linux kernel uleds 4.10 and later allows local users to trigger an out-of-bounds read via a crafted LED name. The uleds write path passes a fixed-size, userspace-supplied name without a guaranteed null terminator to strchr() and the LED class device, so both can scan beyond the 64-byte name array. Exploitation requires local low-privileged access to /dev/uleds; Red Hat bounds its score to a kernel crash, while the upstream record does not demonstrate returned kernel memory.

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

Buffer overread in Linux kernel uleds 4.10 and later allows local users to trigger an out-of-bounds read via a crafted LED name. The uleds write path passes a fixed-size, userspace-supplied name without a guaranteed null terminator to strchr() and the LED class device, so both can scan beyond the 64-byte name array. Exploitation requires local low-privileged access to /dev/uleds; Red Hat bounds its score to a kernel crash, while the upstream record does not demonstrate returned kernel memory.

The record

CVE
CVE-2026-72241
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4.10
  2. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <263ccdd627caeda6e980ed3c6e32bb4fd6b380b1
  3. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <5ad6f6c9209e5777b896def9876708853ae26d0d
  4. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <5bb89e23729f3a59592d699a437bb001f24b8f67
  5. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <6dd51d84a9502553e58beade72823258871b8111
  6. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <8bf529571cca60fb8af65d6d034bdbbc99a9127c
  7. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <a84c59121dfdc7b324f72dc5012aa8fe5e7d2d7b
  8. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <a91ac9fdac7385cbc98aeae55b4e5302125497a2
  9. Affected versionversion=e381322b0190c1253d347de3f28b5c37756fb651 <c19fe864f667afc49d1391d764e20b66555bcf7a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=e381322b0190c1253d347de3f28b5c37756fb651 <263ccdd627caeda6e980ed3c6e32bb4fd6b380b1; version=e381322b0190c1253d347de3f28b5c37756fb651 <5ad6f6c9209e5777b896def9876708853ae26d0d; version=e381322b0190c1253d347de3f28b5c37756fb651 <5bb89e23729f3a59592d699a437bb001f24b8f67; version=e381322b0190c1253d347de3f28b5c37756fb651 <6dd51d84a9502553e58beade72823258871b8111; version=e381322b0190c1253d347de3f28b5c37756fb651 <8bf529571cca60fb8af65d6d034bdbbc99a9127c; version=e381322b0190c1253d347de3f28b5c37756fb651 <a84c59121dfdc7b324f72dc5012aa8fe5e7d2d7b; version=e381322b0190c1253d347de3f28b5c37756fb651 <a91ac9fdac7385cbc98aeae55b4e5302125497a2; version=e381322b0190c1253d347de3f28b5c37756fb651 <c19fe864f667afc49d1391d764e20b66555bcf7a

Published CVSS scores

2.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Oracle LinuxCVSS: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-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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