What’s Vulnerable › Vulnerabilities

CVE-2026-90361: wifi: ath11k: fix leak in ath11k_service_ready_ext_event()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix leak in ath11k_service_ready_ext_event() Currently, during ath11k_service_ready_ext_event() processing, svc_rdy_ext.mac_phy_caps can be allocated during TLV parsing. This is a temporary allocation that is freed on the success path, but not on the error path. If parsing succeeds far enough to allocate mac_phy_caps and then fails on a later TLV, the allocation leaks. So free the allocation on the error path. Compile tested only.

Affected products

• Linux kernel: 5.6 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0293be2212d319d59589082461abf2a9b626cd1c
• https://git.kernel.org/stable/c/047a817147806140cdef5fa25d69d7b7a24f905c
• https://git.kernel.org/stable/c/10ccd92825504c029390874c6fb84c62d9f263f9
• https://git.kernel.org/stable/c/1296cae53052881ddd571a9d4f467a16ebfb7f14
• https://git.kernel.org/stable/c/35cb3086b426b3468cfc32d0d8d9883409705ea9
• https://git.kernel.org/stable/c/7dbf0bc50cf3ddd039becd875691bb7f484fa004
• https://git.kernel.org/stable/c/854eb9053a793b73c4e8082e1923735a80c77bcd
• https://git.kernel.org/stable/c/f5bb3471c9f46c6cabc06a152c13fc518330913e

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