CVE-2025-39761: linux kernel Out-of-bounds Read — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Decrement TID on RX peer frag setup error handling Currently, TID is not decremented before peer cleanup, during error handling path of ath12k_dp_rx_peer_frag_setup(). This could lead to out-of-bounds access in peer->rx_tid[]. Hence, add a decrement operation for TID, before peer cleanup to ensures proper cleanup and prevents out-of-bounds access issues when the RX peer frag setup fails. Found during code review. Compile tested only.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.3 — 6.6.103
linux	linux_kernel	6.7 — 6.12.43
linux	linux_kernel	6.13 — 6.15.11
linux	linux_kernel	6.16 — 6.16.2

References

Advisories & Patches

https://git.kernel.org/stable/c/7c0884fcd2ddde0544d2e77f297ae461e1f53f58 https://git.kernel.org/stable/c/7c3e99fd4a66a5ac9c7dd32db07359666efe0002 https://git.kernel.org/stable/c/9530d666f4376c294cdf4348c29fe3542fec980a https://git.kernel.org/stable/c/a3b73c72c42348bf1555fd2b00f32f941324b242 https://git.kernel.org/stable/c/eb1e1526b82b8cf31f1ef9ca86a2647fb6cd89c6

Frequently Asked Questions

What is CVE-2025-39761? +

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Decrement TID on RX peer frag setup error handling Currently, TID is not decremented before peer cleanup, during error handling path of ath12k_dp_rx_peer_frag_setup(). This could lead to out-of-bounds access in peer->rx_tid[]. Hence, add a decrement operation for TID, before peer cleanup to ensures proper cleanup and prevents out-of-bounds access issues when the RX peer frag setup fails. Found during code review. Compile tested only. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-39761? +

CVE-2025-39761 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-39761? +

CVE-2025-39761 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-39761? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-39761