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CVE-2026-68198

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.266, 5.15.217, 6.1.184, 6.6.151, 6.12.103, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

In 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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in a1bac650b2d6b1baab1f3e78e2e007a6e2948dde; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in 2132a6db05846dd2318857d00e0c1291f9e41b29; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in 17ff29cd8dbc977c97788a5f7c011ec807b58242; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in 64af6534a085f49d6ed33338a19ab9cf0d0523c9; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in b5d618fd61b9069b4c0a6b487022dd3117ad5acc; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in 18965470d41e69d3fc10eb62afae29d10f4cdfd1; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in a3313111b5d9046af60b370c93eec105b27380c1; From bdcd81707973cf8aa9305337166f8ee842a050d4 · fixed in ba7debb4dd6427386862220e8335a53a4bfc235d

  • Linux Linux

    3.2

  • KernelLinux

    From 3.2.0 · fixed in 5.10.266; From 5.11.0 · fixed in 5.15.217; From 5.16.0 · fixed in 6.1.184; From 6.2.0 · fixed in 6.6.151; From 6.7.0 · fixed in 6.12.103; From 6.13.0 · fixed in 6.18.42; From 6.19.0 · fixed in 7.1.6

References 8

git.kernel.org