CVE-2024-26947 (GCVE-0-2024-26947)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:18 – Updated: 2026-05-23 15:40
VLAI
Title
ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses
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/
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 17:40 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 , < 0c027c2bad7f5111c51a358b5d392e1a695dabff (git)
Affected: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 , < 9f7ddc222cae8254e93d5c169a8ae11a49d912a7 (git)
Affected: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 , < fb3a122a978626b33de3367ee1762da934c0f512 (git)
Affected: a4d5613c4dc6d413e0733e37db9d116a2a36b9f3 , < 0c66c6f4e21cb22220cbd8821c5c73fc157d20dc (git)
Affected: 6026d4032dbbe3d7f4ac2c8daa923fe74dcf41c4 (git)
Affected: 65c578935bcc26ddc04e6757b2c7be95bf235b31 (git)
Affected: 5.4.167 , < 5.5 (semver)
Affected: 5.10.87 , < 5.11 (semver)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 6.6.24 , ≤ 6.6.* (semver)
Unaffected: 6.7.12 , ≤ 6.7.* (semver)
Unaffected: 6.8.3 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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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",
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        {
          "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/"
        }
      ],
      "id": "CVE-2024-26947",
      "lastModified": "2024-11-21T09:03:27.780",
      "published": "2024-05-01T06:15:10.607",
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      "vulnStatus": "Awaiting Analysis"
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    "microsoft_vex": {
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      "cve": "CVE-2024-26947",
      "id": "msrc_CVE-2024-26947",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "5",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26947.json",
      "version": "14"
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            "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/"
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            "dateUpdated": "2026-05-23T15:40:35.915Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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          "references": [
            {
              "url": "https://git.kernel.org/stable/c/0c027c2bad7f5111c51a358b5d392e1a695dabff"
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              "url": "https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7"
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              "url": "https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512"
            },
            {
              "url": "https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc"
            }
          ],
          "title": "ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses",
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      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26947",
        "datePublished": "2024-05-01T05:18:17.316Z",
        "dateReserved": "2024-02-19T14:20:24.197Z",
        "dateUpdated": "2026-05-23T15:40:35.915Z",
        "state": "PUBLISHED"
      },
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    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.