cve-2024-26947
Vulnerability from cvelistv5
Published
2024-05-01 05:18
Modified
2024-08-02 00:21
Severity
Summary
ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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          "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\uff1a0xc0900000, 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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    "cveId": "CVE-2024-26947",
    "datePublished": "2024-05-01T05:18:17.316Z",
    "dateReserved": "2024-02-19T14:20:24.197Z",
    "dateUpdated": "2024-08-02T00:21:05.505Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26947\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:10.607\",\"lastModified\":\"2024-05-13T08:15:10.313\",\"vulnStatus\":\"Awaiting Analysis\",\"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\uff1a0xc0900000, 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/\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ARM: 9359/1: descarga: verifique si la publicaci\u00f3n est\u00e1 reservada para direcciones sin asignaci\u00f3n. Desde el commit a4d5613c4dc6 (\\\"arm: extienda pfn_valid para tener en cuenta la alineaci\u00f3n del mapa de memoria liberada\\\") cambia la sem\u00e1ntica de pfn_valid() para verificar la presencia del mapa de memoria para un PFN. A valid page for an address which is reserved but not mapped by the kernel[1], the system crashed during some uio test with the following memory layout: node 0: [mem 0x00000000c0a00000-0x00000000cc8fffff] node 0: [mem 0x00000000d0000000-0x00000000da1fffff] el dise\u00f1o de uio es? 0xc0900000, 0x100000 el seguimiento del fallo es como: No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual bff00000 [...] CPU: 1 PID: 465 Comm: startapp.bin Contaminado: GO 5.10.0 #1 Nombre del hardware: La PC del sistema basado en DT gen\u00e9rico est\u00e1 en b15_flush_kern_dcache_area+0x24/0x3c LR est\u00e1 en __sync_icache_dcache+0x6c/0x98 [...] (b15_flush_kern_dcache_area) de (__sync_icache_dcache+0x6c/0x98) (__sync_icache_dcache) de (set_pte_at+0x2 8/0x54) (set_pte_at) desde (remap_pfn_range+0x1a0/0x274) (remap_pfn_range) desde (uio_mmap+0x184/0x1b8 [uio]) (uio_mmap [uio]) desde (__mmap_region+0x264/0x5f4) (__mmap_region) desde (__do_mmap_mm+0x3ec/0x440) mil\u00edmetros) de (do_mmap+0x50/0x58) (do_mmap) de (vm_mmap_pgoff+0xfc/0x188) (vm_mmap_pgoff) de (ksys_mmap_pgoff+0xac/0xc4) (ksys_mmap_pgoff) de (ret_fast_syscall+0x0/0x5c) C\u00f3digo: e0801001 423001 e1c00003 f57ff04f (ee070f3e) ---[ end trace 09cf0734c3805d52 ]--- P\u00e1nico del kernel - no se sincroniza: excepci\u00f3n fatal. As\u00ed que verifique si PG_reserved estaba configurado para resolver este problema. [1]: https://lore.kernel.org/lkml/Zbtdue57RO0QScJM@linux.ibm.com/\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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}


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