tracing: Prevent out-of-bounds read in glob matching

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64299
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-25 10:17:10 UTC
Updated2026-07-27 05:16:40 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: tracing: Prevent out-of-bounds read in glob matching String event fields are not necessarily NUL-terminated, so the filter predicate functions (filter_pred_string(), filter_pred_strloc() and filter_pred_strrelloc()) pass the field length to the regex match callbacks, and the length-aware matchers honour it. regex_match_glob() was the exception: it ignored the length and called glob_match(), which scans the string until it hits a NUL byte. Some string fields are not NUL-terminated. One example is the dynamic char array of the xfs_* namespace tracepoints, which is copied without a trailing NUL. For such a field, glob matching reads past the end of the event field, causing a KASAN slab-out-of-bounds read in glob_match(), reached via regex_match_glob() and filter_match_preds() from the xfs_lookup tracepoint. Add a length-bounded glob_match_len() and use it from regex_match_glob() so glob matching always stops at the field boundary. The matching loop is factored into a shared helper so glob_match() keeps its behaviour.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001600000 probability, percentile 0.055780000 (date 2026-07-29)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 265f3a690f6c7d69ef7d2ca50b04b4853a211df3 git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 ee5b8888d3248618251fb69a2fad92afcb81557e git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 56d4c9ab84714eebb285a2fee68aaedf81e3ef15 git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 35ae19764eabfe9c29029d3b5713c86e6855acdf git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 ebb55902856973906c8bb339a3a34824ed4a5086 git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 2dad64a97e1df47f5d9ccb17fa319aa348617226 git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 e5d5f3bd053a5f14787526c9f0f55ef900d43ac6 git Not specified
CNA Linux Linux affected 60f1d5e3bac44b598f67d36062da96c095d2b700 0a6070839b1ef276d5b05bedfb787743e140fb17 git Not specified
CNA Linux Linux affected 4.10 Not specified
CNA Linux Linux unaffected 4.10 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.96 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.39 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.4 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2dad64a97e1df47f5d9ccb17fa319aa348617226 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/265f3a690f6c7d69ef7d2ca50b04b4853a211df3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e5d5f3bd053a5f14787526c9f0f55ef900d43ac6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/56d4c9ab84714eebb285a2fee68aaedf81e3ef15 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ebb55902856973906c8bb339a3a34824ed4a5086 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0a6070839b1ef276d5b05bedfb787743e140fb17 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ee5b8888d3248618251fb69a2fad92afcb81557e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/35ae19764eabfe9c29029d3b5713c86e6855acdf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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