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Review reviewHigh

CVE-2025-39761

Linux Linux, linux kernel

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.

CVSS
7.1
EPSS
0.22%
12.2% percentile
CISA KEV
Not listed
Published
2025.09.12
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.22%
Technical severityCVSS 7.1

Vulnerability overview

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.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < eb1e1526b82b8cf31f1ef9ca86a2647fb6cd89c6, >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 7c3e99fd4a66a5ac9c7dd32db07359666efe0002, >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < a3b73c72c42348bf1555fd2b00f32f941324b242, >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 9530d666f4376c294cdf4348c29fe3542fec980a, >= d889913205cf7ebda905b1e62c5867ed4e39f6c2 < 7c0884fcd2ddde0544d2e77f297ae461e1f53f58, >= 6.3, >= 6.3 < 6.6.103, >= 6.7 < 6.12.43, >= 6.13 < 6.15.11, >= 6.16 < 6.16.2
Fixed versions
6.6.103, 6.12.43, 6.15.11, 6.16.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
CWE-125