Unknown

CVE-2026-90348 — wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump

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

Published Sep 17, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.22%

ahead of 12% of scored CVEs · Oct 18, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < e5bc3658da9c8a535e3fa5c0c875b2a456954e81≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < fed1f662c9f9fd19eeab6c01966b7b5a33804420≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < 838cab267ce9a975776e022f25094f8cbe1625d2≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < eb946595a58decdb4cab1b5f3c972ae66f41f1c8≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < 152e894e90716163c646d70f86b3afeb70442783≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < 7039825a7479df637c4f5d546cb0e1cec18cd8e1≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < 045d1bfb72d2631ab9ec74afa491aa788ebb57aa≥ 3f14b73c38431a6a1ed24de568e18ed89b7082e2 and < 4f25071afe9218aaae1c63fbf75e229aa6405319 and 1 more version 5.5	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 18, 2026 · 3 reading(s) · max 0.22%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 17, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319
NIST National Vulnerability Database
git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783
NIST National Vulnerability Database
git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1
NIST National Vulnerability Database
git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81
NIST National Vulnerability Database
git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8
NIST National Vulnerability Database
git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa
NIST National Vulnerability Database
git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420
NIST National Vulnerability Database
git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-98866 sched/cache: Introduce task_struct->sched_cache_grp to fix UAF 14h
Unknown CVE-2026-98867 dm-pcache: bound the logical key offset from persistent memory 14h
Unknown CVE-2026-98868 dm-pcache: reject a kset that overruns its segment 14h
Unknown CVE-2026-98856 kprobes: Skip disarmed probes when checking optkprobe overlap 14h
Unknown CVE-2026-98857 ipvs: bound LBLCR and LBLC cache growth 14h
Unknown CVE-2026-98858 io_uring: fix task_work add use-after-free with SQPOLL 14h

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-90348 is "wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.22% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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