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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2024-26947",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-02-19T14:20:24.197Z",
"datePublished": "2024-05-01T05:18:17.316Z",
"dateUpdated": "2026-10-30T12:18:02.172Z"
},
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"shortName": "Linux",
"dateUpdated": "2026-10-30T12:18:02.172Z"
},
"descriptions": [
{
"lang": "en",
"value": "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/"
}
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"version": "6026d4032dbbe3d7f4ac2c8daa923fe74dcf41c4",
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{
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"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"version": "0",
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{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
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"lessThanOrEqual": "6.6.*",
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{
"version": "6.8.3",
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},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
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