wifi: ath6kl: fix use-after-free in aggr_reset_state()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68198
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:07 UTC
Updated2026-10-19 18:17:08 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix use-after-free in aggr_reset_state() The aggr_reset_state() function uses timer_delete() (non-synchronous) for the aggregation timer before proceeding to delete TID state and before the structure is freed by callers like aggr_module_destroy(). If the timer callback (aggr_timeout) is executing when aggr_reset_state() is called, the callback will continue to access aggr_conn fields like rx_tid[] and stat[] which may be freed immediately after by kfree(aggr_info->aggr_conn) in aggr_module_destroy(). Additionally, the timer callback can re-arm itself via mod_timer() while aggr_reset_state() is running, creating a more complex race condition. Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.002740000 probability, percentile 0.185480000 (date 2026-10-19)

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 a1bac650b2d6b1baab1f3e78e2e007a6e2948dde git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 2132a6db05846dd2318857d00e0c1291f9e41b29 git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 17ff29cd8dbc977c97788a5f7c011ec807b58242 git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 64af6534a085f49d6ed33338a19ab9cf0d0523c9 git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 b5d618fd61b9069b4c0a6b487022dd3117ad5acc git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 18965470d41e69d3fc10eb62afae29d10f4cdfd1 git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 a3313111b5d9046af60b370c93eec105b27380c1 git Not specified
CNA Linux Linux affected bdcd81707973cf8aa9305337166f8ee842a050d4 ba7debb4dd6427386862220e8335a53a4bfc235d git Not specified
CNA Linux Linux affected 3.2 Not specified
CNA Linux Linux unaffected 3.2 semver Not specified
CNA Linux Linux unaffected 5.10.266 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.217 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.184 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.151 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a3313111b5d9046af60b370c93eec105b27380c1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ba7debb4dd6427386862220e8335a53a4bfc235d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a1bac650b2d6b1baab1f3e78e2e007a6e2948dde 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b5d618fd61b9069b4c0a6b487022dd3117ad5acc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2132a6db05846dd2318857d00e0c1291f9e41b29 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/18965470d41e69d3fc10eb62afae29d10f4cdfd1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/64af6534a085f49d6ed33338a19ab9cf0d0523c9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/17ff29cd8dbc977c97788a5f7c011ec807b58242 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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