tracing/user_events: Ensure write index cannot be negative

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-54139
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-24 13:16:15 UTC
Updated2026-08-04 10:19:31 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: tracing/user_events: Ensure write index cannot be negative The write index indicates which event the data is for and accesses a per-file array. The index is passed by user processes during write() calls as the first 4 bytes. Ensure that it cannot be negative by returning -EINVAL to prevent out of bounds accesses. Update ftrace self-test to ensure this occurs properly.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001340000 probability, percentile 0.032780000 (date 2026-08-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 0489c2b2c3104b89f078dbcec8c744dfc157d3e9 git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 4fe46b5adf18e3dc606e62c9e6a0413398a17572 git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 fa7f2f5d1739452280c22727c4384a52b72ab5de git Not specified
CNA Linux Linux affected 7f5a08c79df35e68f1a43033450c5050f12bc155 cd98c93286a30cc4588dfd02453bec63c2f4acf4 git Not specified
CNA Linux Linux affected 5.18 Not specified
CNA Linux Linux unaffected 5.18 semver Not specified
CNA Linux Linux unaffected 6.1.28 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2.15 6.2.* semver Not specified
CNA Linux Linux unaffected 6.3.2 6.3.* semver Not specified
CNA Linux Linux unaffected 6.4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0489c2b2c3104b89f078dbcec8c744dfc157d3e9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cd98c93286a30cc4588dfd02453bec63c2f4acf4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fa7f2f5d1739452280c22727c4384a52b72ab5de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4fe46b5adf18e3dc606e62c9e6a0413398a17572 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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