CVE-2026-90348 - Vulnerability Details

Vendors	Products
Linux Subscribe	Linux Kernel Subscribe

Link	Providers
https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa
https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783
https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319
https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1
https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2
https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81
https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8
https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420

Type	Values Removed	Values Added
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
Title		wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783 https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319 https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1 https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2 https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81 https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8 https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90348", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.805Z", "datePublished": "2026-09-17T16:08:56.885Z", "dateUpdated": "2026-09-17T16:08:56.885Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-17T16:08:56.885Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump\n\nOn WCN3990/SNOC the MSA region is mapped with devm_memremap(MEMREMAP_WT).\nOn arm64 such a mapping is not Normal-cacheable, so unaligned accesses to\nit are not permitted. ath10k_msa_dump_memory() copies the region with a\nplain memcpy(), whose optimized __pi_memcpy_generic implementation issues\nwide/unaligned loads. This triggers an alignment fault (FSC=0x21) Oops in\nath10k_snoc_fw_crashed_dump() while collecting the devcoredump:\n\n Unable to handle kernel paging request ... FSC=0x21: alignment fault\n pc : __pi_memcpy_generic\n lr : ath10k_snoc_fw_crashed_dump [ath10k_snoc]\n\nThe Oops both leaves the firmware RAM dump buffer zeroed (no dump is\ncaptured) and crashes the kernel, which in turn breaks modem SSR\nrecovery.\n\nUse memcpy_fromio(), which only performs accesses that are valid for such\na device-memory mapping. The generic memcpy_fromio() implementation aligns\nthe source before issuing word-sized reads and stores the destination with\nput_unaligned(), so it is also safe for the coherent DMA allocation used on\nthe non-reserved-memory path. ath11k and ath12k use the same pattern\nwhen copying target memory into crash dumps, so call it unconditionally\nhere too.\nThe MEMREMAP_WT pointer is a plain void *, so an explicit __iomem cast is\nneeded; use __force to keep sparse happy.\n\nTested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.3.7.c5-00107-QCAHLSWMTPL-1"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ath/ath10k/snoc.c"], "versions": [{"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "e5bc3658da9c8a535e3fa5c0c875b2a456954e81", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "fed1f662c9f9fd19eeab6c01966b7b5a33804420", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "838cab267ce9a975776e022f25094f8cbe1625d2", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "eb946595a58decdb4cab1b5f3c972ae66f41f1c8", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "152e894e90716163c646d70f86b3afeb70442783", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "7039825a7479df637c4f5d546cb0e1cec18cd8e1", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "045d1bfb72d2631ab9ec74afa491aa788ebb57aa", "status": "affected", "versionType": "git"}, {"version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "lessThan": "4f25071afe9218aaae1c63fbf75e229aa6405319", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ath/ath10k/snoc.c"], "versions": [{"version": "5.5", "status": "affected"}, {"version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81"}, {"url": "https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420"}, {"url": "https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2"}, {"url": "https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8"}, {"url": "https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783"}, {"url": "https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1"}, {"url": "https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa"}, {"url": "https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319"}], "title": "wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/ath/ath10k/snoc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e5bc3658da9c8a535e3fa5c0c875b2a456954e81", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "fed1f662c9f9fd19eeab6c01966b7b5a33804420", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "838cab267ce9a975776e022f25094f8cbe1625d2", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "eb946595a58decdb4cab1b5f3c972ae66f41f1c8", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "152e894e90716163c646d70f86b3afeb70442783", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "7039825a7479df637c4f5d546cb0e1cec18cd8e1", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "045d1bfb72d2631ab9ec74afa491aa788ebb57aa", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}, {"lessThan": "4f25071afe9218aaae1c63fbf75e229aa6405319", "status": "affected", "version": "3f14b73c38431a6a1ed24de568e18ed89b7082e2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/ath/ath10k/snoc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"lessThan": "5.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump\n\nOn WCN3990/SNOC the MSA region is mapped with devm_memremap(MEMREMAP_WT).\nOn arm64 such a mapping is not Normal-cacheable, so unaligned accesses to\nit are not permitted. ath10k_msa_dump_memory() copies the region with a\nplain memcpy(), whose optimized __pi_memcpy_generic implementation issues\nwide/unaligned loads. This triggers an alignment fault (FSC=0x21) Oops in\nath10k_snoc_fw_crashed_dump() while collecting the devcoredump:\n\n Unable to handle kernel paging request ... FSC=0x21: alignment fault\n pc : __pi_memcpy_generic\n lr : ath10k_snoc_fw_crashed_dump [ath10k_snoc]\n\nThe Oops both leaves the firmware RAM dump buffer zeroed (no dump is\ncaptured) and crashes the kernel, which in turn breaks modem SSR\nrecovery.\n\nUse memcpy_fromio(), which only performs accesses that are valid for such\na device-memory mapping. The generic memcpy_fromio() implementation aligns\nthe source before issuing word-sized reads and stores the destination with\nput_unaligned(), so it is also safe for the coherent DMA allocation used on\nthe non-reserved-memory path. ath11k and ath12k use the same pattern\nwhen copying target memory into crash dumps, so call it unconditionally\nhere too.\nThe MEMREMAP_WT pointer is a plain void *, so an explicit __iomem cast is\nneeded; use __force to keep sparse happy.\n\nTested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.3.7.c5-00107-QCAHLSWMTPL-1"}], "id": "CVE-2026-90348", "lastModified": "2026-09-17T17:17:33.553", "metrics": {}, "published": "2026-09-17T17:17:33.553", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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