cve-2024-49924
Vulnerability from cvelistv5
Published
2024-10-21 18:01
Modified
2024-12-19 09:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: pxafb: Fix possible use after free in pxafb_task() In the pxafb_probe function, it calls the pxafb_init_fbinfo function, after which &fbi->task is associated with pxafb_task. Moreover, within this pxafb_init_fbinfo function, the pxafb_blank function within the &pxafb_ops struct is capable of scheduling work. If we remove the module which will call pxafb_remove to make cleanup, it will call unregister_framebuffer function which can call do_unregister_framebuffer to free fbi->fb through put_fb_info(fb_info), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | pxafb_task pxafb_remove | unregister_framebuffer(info) | do_unregister_framebuffer(fb_info) | put_fb_info(fb_info) | // free fbi->fb | set_ctrlr_state(fbi, state) | __pxafb_lcd_power(fbi, 0) | fbi->lcd_power(on, &fbi->fb.var) | //use fbi->fb Fix it by ensuring that the work is canceled before proceeding with the cleanup in pxafb_remove. Note that only root user can remove the driver at runtime.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c0d416eb4bef705f699213cee94bf54b6acdacdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a6921095eb04a900e0000da83d9475eb958e61ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cda484e584be34d55ee17436ebf7ad11922b97aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d0a07f68b66269e167def6c0b90a219cd3e7473
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3a855764dbacbdb1cc51e15dc588f2d21c93e0ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aaadc0cb05c999ccd8898a03298b7e5c31509b08Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6897e299f57b103e999e62010b88e363b3eebaePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fdda354f60a576d52dcf90351254714681df4370Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
 Create a notification for this product.
   Linux Linux Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49924",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:39:57.349772Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:48:44.187Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/pxafb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6d0a07f68b66269e167def6c0b90a219cd3e7473",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "e6897e299f57b103e999e62010b88e363b3eebae",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "4cda484e584be34d55ee17436ebf7ad11922b97a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3c0d416eb4bef705f699213cee94bf54b6acdacd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "fdda354f60a576d52dcf90351254714681df4370",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "aaadc0cb05c999ccd8898a03298b7e5c31509b08",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a3a855764dbacbdb1cc51e15dc588f2d21c93e0e",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "4a6921095eb04a900e0000da83d9475eb958e61e",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/pxafb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.227",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: pxafb: Fix possible use after free in pxafb_task()\n\nIn the pxafb_probe function, it calls the pxafb_init_fbinfo function,\nafter which \u0026fbi-\u003etask is associated with pxafb_task. Moreover,\nwithin this pxafb_init_fbinfo function, the pxafb_blank function\nwithin the \u0026pxafb_ops struct is capable of scheduling work.\n\nIf we remove the module which will call pxafb_remove to make cleanup,\nit will call unregister_framebuffer function which can call\ndo_unregister_framebuffer to free fbi-\u003efb through\nput_fb_info(fb_info), while the work mentioned above will be used.\nThe sequence of operations that may lead to a UAF bug is as follows:\n\nCPU0                                                CPU1\n\n                                   | pxafb_task\npxafb_remove                       |\nunregister_framebuffer(info)       |\ndo_unregister_framebuffer(fb_info) |\nput_fb_info(fb_info)               |\n// free fbi-\u003efb                    | set_ctrlr_state(fbi, state)\n                                   | __pxafb_lcd_power(fbi, 0)\n                                   | fbi-\u003elcd_power(on, \u0026fbi-\u003efb.var)\n                                   | //use fbi-\u003efb\n\nFix it by ensuring that the work is canceled before proceeding\nwith the cleanup in pxafb_remove.\n\nNote that only root user can remove the driver at runtime."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:29:08.760Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/6d0a07f68b66269e167def6c0b90a219cd3e7473"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6897e299f57b103e999e62010b88e363b3eebae"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cda484e584be34d55ee17436ebf7ad11922b97a"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c0d416eb4bef705f699213cee94bf54b6acdacd"
        },
        {
          "url": "https://git.kernel.org/stable/c/fdda354f60a576d52dcf90351254714681df4370"
        },
        {
          "url": "https://git.kernel.org/stable/c/aaadc0cb05c999ccd8898a03298b7e5c31509b08"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3a855764dbacbdb1cc51e15dc588f2d21c93e0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a6921095eb04a900e0000da83d9475eb958e61e"
        }
      ],
      "title": "fbdev: pxafb: Fix possible use after free in pxafb_task()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49924",
    "datePublished": "2024-10-21T18:01:49.076Z",
    "dateReserved": "2024-10-21T12:17:06.036Z",
    "dateUpdated": "2024-12-19T09:29:08.760Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-49924\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T18:15:14.450\",\"lastModified\":\"2024-11-08T16:15:31.683\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfbdev: pxafb: Fix possible use after free in pxafb_task()\\n\\nIn the pxafb_probe function, it calls the pxafb_init_fbinfo function,\\nafter which \u0026fbi-\u003etask is associated with pxafb_task. Moreover,\\nwithin this pxafb_init_fbinfo function, the pxafb_blank function\\nwithin the \u0026pxafb_ops struct is capable of scheduling work.\\n\\nIf we remove the module which will call pxafb_remove to make cleanup,\\nit will call unregister_framebuffer function which can call\\ndo_unregister_framebuffer to free fbi-\u003efb through\\nput_fb_info(fb_info), while the work mentioned above will be used.\\nThe sequence of operations that may lead to a UAF bug is as follows:\\n\\nCPU0                                                CPU1\\n\\n                                   | pxafb_task\\npxafb_remove                       |\\nunregister_framebuffer(info)       |\\ndo_unregister_framebuffer(fb_info) |\\nput_fb_info(fb_info)               |\\n// free fbi-\u003efb                    | set_ctrlr_state(fbi, state)\\n                                   | __pxafb_lcd_power(fbi, 0)\\n                                   | fbi-\u003elcd_power(on, \u0026fbi-\u003efb.var)\\n                                   | //use fbi-\u003efb\\n\\nFix it by ensuring that the work is canceled before proceeding\\nwith the cleanup in pxafb_remove.\\n\\nNote that only root user can remove the driver at runtime.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: pxafb: Arregla posible use after free en pxafb_task() En la funci\u00f3n pxafb_probe, llama a la funci\u00f3n pxafb_init_fbinfo, despu\u00e9s de lo cual \u0026amp;fbi-\u0026gt;task se asocia con pxafb_task. Adem\u00e1s, dentro de esta funci\u00f3n pxafb_init_fbinfo, la funci\u00f3n pxafb_blank dentro de la estructura \u0026amp;pxafb_ops es capaz de programar trabajo. Si eliminamos el m\u00f3dulo que llamar\u00e1 a pxafb_remove para hacer la limpieza, llamar\u00e1 a la funci\u00f3n unregister_framebuffer que puede llamar a do_unregister_framebuffer para liberar fbi-\u0026gt;fb a trav\u00e9s de put_fb_info(fb_info), mientras que se utilizar\u00e1 el trabajo mencionado anteriormente. La secuencia de operaciones que pueden llevar a un error de UAF es la siguiente: CPU0 CPU1 | pxafb_task pxafb_remove | unregister_framebuffer(info) | do_unregister_framebuffer(fb_info) | put_fb_info(fb_info) | // free fbi-\u0026gt;fb | set_ctrlr_state(fbi, state) | __pxafb_lcd_power(fbi, 0) | fbi-\u0026gt;lcd_power(on, \u0026amp;fbi-\u0026gt;fb.var) | //use fbi-\u0026gt;fb Solucione el problema asegur\u00e1ndose de cancelar el trabajo antes de continuar con la limpieza en pxafb_remove. Tenga en cuenta que solo el usuario root puede eliminar el controlador en tiempo de ejecuci\u00f3n.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.10.227\",\"matchCriteriaId\":\"EB525A44-6338-4857-AD90-EA2860D1AD1F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.168\",\"matchCriteriaId\":\"4D51C05D-455B-4D8D-89E7-A58E140B864C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.113\",\"matchCriteriaId\":\"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.55\",\"matchCriteriaId\":\"E90B9576-56C4-47BC-AAB0-C5B2D438F5D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.14\",\"matchCriteriaId\":\"4C16BCE0-FFA0-4599-BE0A-1FD65101C021\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.3\",\"matchCriteriaId\":\"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3c0d416eb4bef705f699213cee94bf54b6acdacd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a6921095eb04a900e0000da83d9475eb958e61e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4cda484e584be34d55ee17436ebf7ad11922b97a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6d0a07f68b66269e167def6c0b90a219cd3e7473\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a3a855764dbacbdb1cc51e15dc588f2d21c93e0e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aaadc0cb05c999ccd8898a03298b7e5c31509b08\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e6897e299f57b103e999e62010b88e363b3eebae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fdda354f60a576d52dcf90351254714681df4370\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49924\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:39:57.349772Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:40:00.525Z\"}}], \"cna\": {\"title\": \"fbdev: pxafb: Fix possible use after free in pxafb_task()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"e6897e299f57\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"4cda484e584b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"3c0d416eb4be\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"fdda354f60a5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"aaadc0cb05c9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"a3a855764dba\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"4a6921095eb0\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/video/fbdev/pxafb.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12-rc1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/video/fbdev/pxafb.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e6897e299f57b103e999e62010b88e363b3eebae\"}, {\"url\": \"https://git.kernel.org/stable/c/4cda484e584be34d55ee17436ebf7ad11922b97a\"}, {\"url\": \"https://git.kernel.org/stable/c/3c0d416eb4bef705f699213cee94bf54b6acdacd\"}, {\"url\": \"https://git.kernel.org/stable/c/fdda354f60a576d52dcf90351254714681df4370\"}, {\"url\": \"https://git.kernel.org/stable/c/aaadc0cb05c999ccd8898a03298b7e5c31509b08\"}, {\"url\": \"https://git.kernel.org/stable/c/a3a855764dbacbdb1cc51e15dc588f2d21c93e0e\"}, {\"url\": \"https://git.kernel.org/stable/c/4a6921095eb04a900e0000da83d9475eb958e61e\"}], \"x_generator\": {\"engine\": \"bippy-c9c4e1df01b2\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfbdev: pxafb: Fix possible use after free in pxafb_task()\\n\\nIn the pxafb_probe function, it calls the pxafb_init_fbinfo function,\\nafter which \u0026fbi-\u003etask is associated with pxafb_task. Moreover,\\nwithin this pxafb_init_fbinfo function, the pxafb_blank function\\nwithin the \u0026pxafb_ops struct is capable of scheduling work.\\n\\nIf we remove the module which will call pxafb_remove to make cleanup,\\nit will call unregister_framebuffer function which can call\\ndo_unregister_framebuffer to free fbi-\u003efb through\\nput_fb_info(fb_info), while the work mentioned above will be used.\\nThe sequence of operations that may lead to a UAF bug is as follows:\\n\\nCPU0                                                CPU1\\n\\n                                   | pxafb_task\\npxafb_remove                       |\\nunregister_framebuffer(info)       |\\ndo_unregister_framebuffer(fb_info) |\\nput_fb_info(fb_info)               |\\n// free fbi-\u003efb                    | set_ctrlr_state(fbi, state)\\n                                   | __pxafb_lcd_power(fbi, 0)\\n                                   | fbi-\u003elcd_power(on, \u0026fbi-\u003efb.var)\\n                                   | //use fbi-\u003efb\\n\\nFix it by ensuring that the work is canceled before proceeding\\nwith the cleanup in pxafb_remove.\\n\\nNote that only root user can remove the driver at runtime.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-10-21T18:01:49.076Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49924\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-22T13:48:44.187Z\", \"dateReserved\": \"2024-10-21T12:17:06.036Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:01:49.076Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.