CVE-2026-97442wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
- 8.8HighCVSS base score
- 0.25%Exploitation in 30 daysEPSS · top 83% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi In certain cases, hardware might provide packets with a length greater than the maximum native Wi-Fi header length. This can lead to accessing and modifying fields in the header within the ath11k_dp_rx_h_undecap_nwifi() function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and potentially result in invalid data access and memory corruption. Kernel stack is corrupted in: ath11k_dp_rx_h_undecap+0x6b0/0x6b0 [ath11k] Call trace: ath11k_dp_rx_h_mpdu+0x0/0x2e8 [ath11k] ath11k_dp_rx_h_mpdu+0x1e0/0x2e8 [ath11k] ath11k_dp_rx_wbm_err+0x1e0/0x450 [ath11k] ath11k_dp_rx_process_wbm_err+0x2fc/0x460 [ath11k] ath11k_dp_service_srng+0x2e0/0x348 [ath11k] Add a sanity check before processing the SKB to prevent invalid data access in the undecap native Wi-Fi function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type. This adapted from the discussion/patch of the ath12k driver [1]. Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04685-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1
Timeline
ID reserved
By Linux
Published
- 9 days later
· 9 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 83% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected acc79d981c1462b22a7a2cb0d39725f8c01fc425 – < 958cf3696ddc5ccafd3d0b8b0c03d90bcd771c0c
- affected acc79d981c1462b22a7a2cb0d39725f8c01fc425 – < b4ef30f1d107aae460edf731a7c2d187fbc46a32
- affected acc79d981c1462b22a7a2cb0d39725f8c01fc425 – < 1c0a13be76db3c1cf774aa11d9f4c3f8239ac567
- affected acc79d981c1462b22a7a2cb0d39725f8c01fc425 – < 00738665c875ab34efa7126ea63c9d70b48ee169
- affected acc79d981c1462b22a7a2cb0d39725f8c01fc425 – < 6b471e9aefee9ed73278eb1141e0d8530a56fae9
- affected 5.7
- unaffected < 5.7
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References5
- https://git.kernel.org/stable/c/958cf3696ddc5ccafd3d0b8b0c03d90bcd771c0c (opens in a new tab)
- https://git.kernel.org/stable/c/b4ef30f1d107aae460edf731a7c2d187fbc46a32 (opens in a new tab)
- https://git.kernel.org/stable/c/1c0a13be76db3c1cf774aa11d9f4c3f8239ac567 (opens in a new tab)
- https://git.kernel.org/stable/c/00738665c875ab34efa7126ea63c9d70b48ee169 (opens in a new tab)
- https://git.kernel.org/stable/c/6b471e9aefee9ed73278eb1141e0d8530a56fae9 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86055 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-97442)Record last updated .