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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
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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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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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T11:02:43+00:00",
      "cve": "CVE-2024-26947",
      "id": "CVE-2024-26947",
      "initial_release_date": "2024-05-01T00:00:00+00:00",
      "product_status:fixed": "1295",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "115",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26947.json",
      "version": "3"
    },
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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/\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.3\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.4.167\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.10.87\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:40:35.915Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26947\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:40:35.915Z\", \"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": "5.2"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.