{"id":"CVE-2024-26947","revision":null,"records":[{"revision":"521d0b8d50e04fe8ab063cbd51a60364","observedAt":"2026-10-30T13:45:33.454+00:00","statement":{"source":"cve-program","id":"CVE-2024-26947","aliases":[],"title":"ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses\n\nSince commit a4d5613c4dc6 (\"arm: extend pfn_valid to take into account\nfreed memory map alignment\") changes the semantics of pfn_valid() to check\npresence of the memory map for a PFN. A valid page for an address which\nis reserved but not mapped by the kernel[1], the system crashed during\nsome uio test with the following memory layout:\n\n node 0: [mem 0x00000000c0a00000-0x00000000cc8fffff]\n node 0: [mem 0x00000000d0000000-0x00000000da1fffff]\n the uio layout is：0xc0900000, 0x100000\n\nthe crash backtrace like:\n\n Unable to handle kernel paging request at virtual address bff00000\n [...]\n CPU: 1 PID: 465 Comm: startapp.bin Tainted: G O 5.10.0 #1\n Hardware name: Generic DT based system\n PC is at b15_flush_kern_dcache_area+0x24/0x3c\n LR is at __sync_icache_dcache+0x6c/0x98\n [...]\n (b15_flush_kern_dcache_area) from (__sync_icache_dcache+0x6c/0x98)\n (__sync_icache_dcache) from (set_pte_at+0x28/0x54)\n (set_pte_at) from (remap_pfn_range+0x1a0/0x274)\n (remap_pfn_range) from (uio_mmap+0x184/0x1b8 [uio])\n (uio_mmap [uio]) from (__mmap_region+0x264/0x5f4)\n (__mmap_region) from (__do_mmap_mm+0x3ec/0x440)\n (__do_mmap_mm) from (do_mmap+0x50/0x58)\n (do_mmap) from (vm_mmap_pgoff+0xfc/0x188)\n (vm_mmap_pgoff) from (ksys_mmap_pgoff+0xac/0xc4)\n (ksys_mmap_pgoff) from (ret_fast_syscall+0x0/0x5c)\n Code: e0801001 e2423001 e1c00003 f57ff04f (ee070f3e)\n ---[ end trace 09cf0734c3805d52 ]---\n Kernel panic - not syncing: Fatal exception\n\nSo check if PG_reserved was set to solve this issue.\n\n[1]: https://lore.kernel.org/lkml/Zbtdue57RO0QScJM@linux.ibm.com/","state":0,"publishedAt":"2024-05-01T05:18:17.316+00:00","modifiedAt":"2026-10-30T12:18:02.172+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"arch/arm/mm/flush.c\"\n ],\n \"versions\": [\n {\n \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\",\n \"lessThan\": \"ed95b1e88174566de3dc81d94399aacf2c9dfba4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\",\n \"lessThan\": \"0c027c2bad7f5111c51a358b5d392e1a695dabff\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\",\n \"lessThan\": \"9f7ddc222cae8254e93d5c169a8ae11a49d912a7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\",\n \"lessThan\": \"fb3a122a978626b33de3367ee1762da934c0f512\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\",\n \"lessThan\": \"0c66c6f4e21cb22220cbd8821c5c73fc157d20dc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6026d4032dbbe3d7f4ac2c8daa923fe74dcf41c4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"65c578935bcc26ddc04e6757b2c7be95bf235b31\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.4.167\",\n \"lessThan\": \"5.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.87\",\n \"lessThan\": \"5.11\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"arch/arm/mm/flush.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.14\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.14\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.191\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.24\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.7.12\",\n \"lessThanOrEqual\": \"6.7.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.8.3\",\n \"lessThanOrEqual\": \"6.8.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ed95b1e88174566de3dc81d94399aacf2c9dfba4","https://git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff","https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7","https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512","https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26947","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-26947","identifiers":["CVE-2024-26947"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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