CVE-2025-39761: wifi: ath12k: Decrement TID on RX peer frag setup error handling
Vulnerability summary
CVE-2025-39761 is a high (CVSS 8.8) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.7% of scored vulnerabilities.
Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 33 · Related 31Timeline
- 11-09-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu122 products
- linux< 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ d889913205cf7ebda905b1e62c5867ed4e39f6c2, < eb1e1526b82b8cf31f1ef9ca86a2647fb6cd89c6 | ≥ d889913205cf7ebda905b1e62c5867ed4e39f6c2, < 7c3e99fd4a66a5ac9c7dd32db07359666efe0002 | ≥ d889913205cf7ebda905b1e62c5867ed4e39f6c2, < a3b73c72c42348bf1555fd2b00f32f941324b242 | ≥ d889913205cf7ebda905b1e62c5867ed4e39f6c2, < 9530d666f4376c294cdf4348c29fe3542fec980a | ≥ d889913205cf7ebda905b1e62c5867ed4e39f6c2, < 7c0884fcd2ddde0544d2e77f297ae461e1f53f58 | 6.3
- linux_kernel≥ 6.3, < 6.6.103 | ≥ 6.7, < 6.12.43 | ≥ 6.13, < 6.15.11 | ≥ 6.16, < 6.16.2
Debian1 product
- linux< 6.12.43-1 | < 6.16.3-1
3 vendors · 125 products
