CVE-2026-68355 PUBLISHED

wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get()

Assigner: Linux
Reserved: 30.07.2026 Published: 10.08.2026 Updated: 10.08.2026

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get()

When the first entry in msdu_details has a zero buffer address, the code accesses msdu_details[i - 1] with i == 0, causing a buffer underflow.

Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding a separate check for i == 0 before the main condition to prevent the out-of-bounds access.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from d5c65159f2895379e11ca13f62feabe93278985d to 69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a (excl.)
  • affected from d5c65159f2895379e11ca13f62feabe93278985d to 904367381a922aa2dc3e8bd2488e6c9180516c7a (excl.)
  • affected from d5c65159f2895379e11ca13f62feabe93278985d to a154ca3c441a67d36b3a9ea63a4f11b06abe6223 (excl.)
  • affected from d5c65159f2895379e11ca13f62feabe93278985d to 725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5 (excl.)
  • affected from d5c65159f2895379e11ca13f62feabe93278985d to 7f11e70629650ff6ea140984e5ce188b775b2683 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.6 is affected
  • unaffected from 0 to 5.6 (excl.)
  • unaffected from 6.6.148 to 6.6.* (incl.)
  • unaffected from 6.12.101 to 6.12.* (incl.)
  • unaffected from 6.18.42 to 6.18.* (incl.)
  • unaffected from 7.1.6 to 7.1.* (incl.)
  • unaffected from 7.2-rc5 to * (incl.)

References