{"id":"CVE-2026-90348","state":"PUBLISHED","title":"wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump","description":"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","publishedAt":"2026-09-17T16:08:56.885Z","updatedAt":"2026-10-19T09:02:05.059Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"e5bc3658da9c8a535e3fa5c0c875b2a456954e81","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"fed1f662c9f9fd19eeab6c01966b7b5a33804420","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"838cab267ce9a975776e022f25094f8cbe1625d2","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"eb946595a58decdb4cab1b5f3c972ae66f41f1c8","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"152e894e90716163c646d70f86b3afeb70442783","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"7039825a7479df637c4f5d546cb0e1cec18cd8e1","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"045d1bfb72d2631ab9ec74afa491aa788ebb57aa","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"4f25071afe9218aaae1c63fbf75e229aa6405319","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath10k/snoc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath10k/snoc.c"]}],"references":["https://git.kernel.org/stable/c/e5bc3658da9c8a535e3fa5c0c875b2a456954e81","https://git.kernel.org/stable/c/fed1f662c9f9fd19eeab6c01966b7b5a33804420","https://git.kernel.org/stable/c/838cab267ce9a975776e022f25094f8cbe1625d2","https://git.kernel.org/stable/c/eb946595a58decdb4cab1b5f3c972ae66f41f1c8","https://git.kernel.org/stable/c/152e894e90716163c646d70f86b3afeb70442783","https://git.kernel.org/stable/c/7039825a7479df637c4f5d546cb0e1cec18cd8e1","https://git.kernel.org/stable/c/045d1bfb72d2631ab9ec74afa491aa788ebb57aa","https://git.kernel.org/stable/c/4f25071afe9218aaae1c63fbf75e229aa6405319"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90348.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90348","state":"PUBLISHED","datePublished":"2026-09-17T16:08:56.885Z","dateUpdated":"2026-10-19T09:02:05.059Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.805Z"},"containers":{"cna":{"title":"wifi: ath10k: snoc: use memcpy_fromio() for MSA ramdump","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"e5bc3658da9c8a535e3fa5c0c875b2a456954e81","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"fed1f662c9f9fd19eeab6c01966b7b5a33804420","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"838cab267ce9a975776e022f25094f8cbe1625d2","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"eb946595a58decdb4cab1b5f3c972ae66f41f1c8","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"152e894e90716163c646d70f86b3afeb70442783","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"7039825a7479df637c4f5d546cb0e1cec18cd8e1","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"045d1bfb72d2631ab9ec74afa491aa788ebb57aa","versionType":"git"},{"version":"3f14b73c38431a6a1ed24de568e18ed89b7082e2","status":"affected","lessThan":"4f25071afe9218aaae1c63fbf75e229aa6405319","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath10k/snoc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath10k/snoc.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:02:05.059Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}