CVE-2023-53802

wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function

N/A

Published: December 9, 2025 at 12:00 AM UTC

Updated: June 17, 2026 at 06:46 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function It is stated that ath9k_htc_rx_msg() either frees the provided skb or passes its management to another callback function. However, the skb is not freed in case there is no another callback function, and Syzkaller was able to cause a memory leak. Also minor comment fix. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.35 ≤ v < 4.14.3082.6.35 ≤ v < 4.19.2762.6.35 ≤ v < 5.10.1732.6.35 ≤ v < 5.15.992.6.35 ≤ v < 5.4.2352.6.35 ≤ v < 6.1.162.6.35 ≤ v < 6.2.32.6.35 ≤ v < 6.32.6.35fb9987d0f748c983bb795a86f47522313f701a08

Vendor states this is fixed in 564bc2222bf50eb6cdee715a5431bf4dc9f923c1 (fixed)

Vendor states this is fixed in 5a84e51f72580fc70066b03f3dac38421e702a0b (fixed)

Vendor states this is fixed in 68171c006c8645a3e0293a6c3e6037c6538ac1c5 (fixed)

Vendor states this is fixed in 9b25e3985477ac3f02eca5fc1e0cc6850a3f7e69 (fixed)

Vendor states this is fixed in b11f95f65cc52ee3a756e6f6a88df37a203e25bd (fixed)

Vendor states this is fixed in bbfababb4f899fe1556eac195f9774b6fe675fb6 (fixed)

Vendor states this is fixed in c0c0614f143b568cd0e9525d53cf12e5dcd11987 (fixed)

Vendor states this is fixed in ec246dfe006b2a8f36353f7489e4f525114db9a5 (fixed)

Vendor states this is fixed in 2.6.35 (unaffected)

Vendor states this is fixed in 4.14.308 (unaffected)

Vendor states this is fixed in 4.19.276 (unaffected)

Vendor states this is fixed in 5.10.173 (unaffected)