CVE-2024-26947 (GCVE-0-2024-26947)
Vulnerability from cvelistv5
Published
2024-05-01 05:18
Modified
2025-05-04 12:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses Since commit a4d5613c4dc6 ("arm: extend pfn_valid to take into account freed memory map alignment") changes the semantics of pfn_valid() to check presence of the memory map for a 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] the uio layout is：0xc0900000, 0x100000 the crash backtrace like: Unable to handle kernel paging request at virtual address bff00000 [...] CPU: 1 PID: 465 Comm: startapp.bin Tainted: G O 5.10.0 #1 Hardware name: Generic DT based system PC is at b15_flush_kern_dcache_area+0x24/0x3c LR is at __sync_icache_dcache+0x6c/0x98 [...] (b15_flush_kern_dcache_area) from (__sync_icache_dcache+0x6c/0x98) (__sync_icache_dcache) from (set_pte_at+0x28/0x54) (set_pte_at) from (remap_pfn_range+0x1a0/0x274) (remap_pfn_range) from (uio_mmap+0x184/0x1b8 [uio]) (uio_mmap [uio]) from (__mmap_region+0x264/0x5f4) (__mmap_region) from (__do_mmap_mm+0x3ec/0x440) (__do_mmap_mm) from (do_mmap+0x50/0x58) (do_mmap) from (vm_mmap_pgoff+0xfc/0x188) (vm_mmap_pgoff) from (ksys_mmap_pgoff+0xac/0xc4) (ksys_mmap_pgoff) from (ret_fast_syscall+0x0/0x5c) Code: e0801001 e2423001 e1c00003 f57ff04f (ee070f3e) ---[ end trace 09cf0734c3805d52 ]--- Kernel panic - not syncing: Fatal exception So check if PG_reserved was set to solve this issue. [1]: https://lore.kernel.org/lkml/Zbtdue57RO0QScJM@linux.ibm.com/
References
Impacted products
Vendor Product Version
Linux Linux Version: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3
Version: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3
Version: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3
Version: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3
Version: 6026d4032dbbe3d7f4ac2c8daa923fe74dcf41c4
Version: 65c578935bcc26ddc04e6757b2c7be95bf235b31
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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. 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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:21:05.505Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26947\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-17T17:40:49.744241Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-17T17:40:50.725Z\"}}], \"cna\": {\"title\": \"ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\", \"lessThan\": \"0c027c2bad7f5111c51a358b5d392e1a695dabff\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\", \"lessThan\": \"9f7ddc222cae8254e93d5c169a8ae11a49d912a7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\", \"lessThan\": \"fb3a122a978626b33de3367ee1762da934c0f512\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a4d5613c4dc6d413e0733e37db9d116a2a36b9f3\", \"lessThan\": \"0c66c6f4e21cb22220cbd8821c5c73fc157d20dc\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/arm/mm/flush.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.14\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.14\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/arm/mm/flush.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff\"}, {\"url\": \"https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7\"}, {\"url\": \"https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512\"}, {\"url\": \"https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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. 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      "cveMetadata": "{\"cveId\": \"CVE-2024-26947\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:00:26.839Z\", \"dateReserved\": \"2024-02-19T14:20:24.197Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:18:17.316Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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