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
CVE-2026-90348
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90348
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "e5bc3658da9c8a535e3fa5c0c875b2a456954e81",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "fed1f662c9f9fd19eeab6c01966b7b5a33804420",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "838cab267ce9a975776e022f25094f8cbe1625d2",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "eb946595a58decdb4cab1b5f3c972ae66f41f1c8",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "152e894e90716163c646d70f86b3afeb70442783",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "7039825a7479df637c4f5d546cb0e1cec18cd8e1",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "045d1bfb72d2631ab9ec74afa491aa788ebb57aa",
"versionType": "git"
},
{
"status": "affected",
"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2",
"lessThan": "4f25071afe9218aaae1c63fbf75e229aa6405319",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/ath/ath10k/snoc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/ath/ath10k/snoc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90348
Source reference:
/cveMetadata/cveId
Publisher severity
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- Event
- #36684 · Revision 1
- Added to Heist Feed
- Publisher date