CVE-2026-90348wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 87% 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: ath10k: snoc: use memcpy_fromio() for MSA ramdump On WCN3990/SNOC the MSA region is mapped with devm_memremap(MEMREMAP_WT). On arm64 such a mapping is not Normal-cacheable, so unaligned accesses to it are not permitted. ath10k_msa_dump_memory() copies the region with a plain memcpy(), whose optimized __pi_memcpy_generic implementation issues wide/unaligned loads. This triggers an alignment fault (FSC=0x21) Oops in ath10k_snoc_fw_crashed_dump() while collecting the devcoredump: Unable to handle kernel paging request ... FSC=0x21: alignment fault pc : __pi_memcpy_generic lr : ath10k_snoc_fw_crashed_dump [ath10k_snoc] The Oops both leaves the firmware RAM dump buffer zeroed (no dump is captured) and crashes the kernel, which in turn breaks modem SSR recovery. Use memcpy_fromio(), which only performs accesses that are valid for such a device-memory mapping. The generic memcpy_fromio() implementation aligns the source before issuing word-sized reads and stores the destination with put_unaligned(), so it is also safe for the coherent DMA allocation used on the non-reserved-memory path. ath11k and ath12k use the same pattern when copying target memory into crash dumps, so call it unconditionally here too. The MEMREMAP_WT pointer is a plain void *, so an explicit __iomem cast is needed; use __force to keep sparse happy. Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.3.7.c5-00107-QCAHLSWMTPL-1
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < e5bc3658da9c8a535e3fa5c0c875b2a456954e81
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < fed1f662c9f9fd19eeab6c01966b7b5a33804420
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < 838cab267ce9a975776e022f25094f8cbe1625d2
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < eb946595a58decdb4cab1b5f3c972ae66f41f1c8
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < 152e894e90716163c646d70f86b3afeb70442783
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < 7039825a7479df637c4f5d546cb0e1cec18cd8e1
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < 045d1bfb72d2631ab9ec74afa491aa788ebb57aa
- affected 3f14b73c38431a6a1ed24de568e18ed89b7082e2 – < 4f25071afe9218aaae1c63fbf75e229aa6405319
- affected 5.5
- unaffected < 5.5
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81 (opens in a new tab)
- https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420 (opens in a new tab)
- https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2 (opens in a new tab)
- https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8 (opens in a new tab)
- https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783 (opens in a new tab)
- https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1 (opens in a new tab)
- https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa (opens in a new tab)
- https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319 (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-2026-82009 (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-2026-90348)Record last updated .