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CVE-2023-52776

wifi: ath12k: fix dfs-radar and temperature event locking

HIGH
8.8
CVSS Score
Published: May 21, 2024 at 03:30 PM UTC
Updated: August 5, 2026 at 10:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix dfs-radar and temperature event locking The ath12k active pdevs are protected by RCU but the DFS-radar and temperature event handling code calling ath12k_mac_get_ar_by_pdev_id() was not marked as a read-side critical section. Mark the code in question as RCU read-side critical sections to avoid any potential use-after-free issues. Note that the temperature event handler looks like a place holder currently but would still trigger an RCU lockdep splat. Compile tested only.

Affected

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

Linux Kernel· Linux
95%
6.3 ≤ v < 6.5.136.3 ≤ v < 6.6.36.3 ≤ v < 6.76.6 ≤ v < 6.6.36.3d889913205cf7ebda905b1e62c5867ed4e39f6c2
Vendor states this is fixed in 69bd216e049349886405b1c87a55dce3d35d1ba7 (fixed)
Vendor states this is fixed in 774de37c147fea81f2c2e4be5082304f4f71d535 (fixed)
Vendor states this is fixed in d7a5f7f76568e48869916d769e28b9f3ca70c78e (fixed)
Vendor states this is fixed in 6.3 (unaffected)
Vendor states this is fixed in 6.5.13 (unaffected)
Vendor states this is fixed in 6.6.3 (unaffected)
Vendor states this is fixed in 6.7 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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