fkie_cve-2024-56534
Vulnerability from fkie_nvd
Published
2024-12-27 14:15
Modified
2025-01-14 15:49
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: isofs: avoid memory leak in iocharset A memleak was found as below: unreferenced object 0xffff0000d10164d8 (size 8): comm "pool-udisksd", pid 108217, jiffies 4295408555 hex dump (first 8 bytes): 75 74 66 38 00 cc cc cc utf8.... backtrace (crc de430d31): [<ffff800081046e6c>] kmemleak_alloc+0xb8/0xc8 [<ffff8000803e6c3c>] __kmalloc_node_track_caller_noprof+0x380/0x474 [<ffff800080363b74>] kstrdup+0x70/0xfc [<ffff80007bb3c6a4>] isofs_parse_param+0x228/0x2c0 [isofs] [<ffff8000804d7f68>] vfs_parse_fs_param+0xf4/0x164 [<ffff8000804d8064>] vfs_parse_fs_string+0x8c/0xd4 [<ffff8000804d815c>] vfs_parse_monolithic_sep+0xb0/0xfc [<ffff8000804d81d8>] generic_parse_monolithic+0x30/0x3c [<ffff8000804d8bfc>] parse_monolithic_mount_data+0x40/0x4c [<ffff8000804b6a64>] path_mount+0x6c4/0x9ec [<ffff8000804b6e38>] do_mount+0xac/0xc4 [<ffff8000804b7494>] __arm64_sys_mount+0x16c/0x2b0 [<ffff80008002b8dc>] invoke_syscall+0x7c/0x104 [<ffff80008002ba44>] el0_svc_common.constprop.1+0xe0/0x104 [<ffff80008002ba94>] do_el0_svc+0x2c/0x38 [<ffff800081041108>] el0_svc+0x3c/0x1b8 The opt->iocharset is freed inside the isofs_fill_super function, But there may be situations where it's not possible to enter this function. For example, in the get_tree_bdev_flags function,when encountering the situation where "Can't mount, would change RO state," In such a case, isofs_fill_super will not have the opportunity to be called,which means that opt->iocharset will not have the chance to be freed,ultimately leading to a memory leak. Let's move the memory freeing of opt->iocharset into isofs_free_fc function.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b5bbeee4de616a268db77e2f40f19ab010a367bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0fbab266ca8000333c966f5b58cb9b9cac658573Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34f090ddb3630a26e5a6b220bf3bfaf5c7b70393Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "158A6B22-9260-41D7-965A-A81798A5A969",
                     versionEndExcluding: "6.11.11",
                     versionStartIncluding: "6.10",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "D8882B1B-2ABC-4838-AC1D-DBDBB5764776",
                     versionEndExcluding: "6.12.2",
                     versionStartIncluding: "6.12",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nisofs: avoid memory leak in iocharset\n\nA memleak was found as below:\n\nunreferenced object 0xffff0000d10164d8 (size 8):\n  comm \"pool-udisksd\", pid 108217, jiffies 4295408555\n  hex dump (first 8 bytes):\n    75 74 66 38 00 cc cc cc                          utf8....\n  backtrace (crc de430d31):\n    [<ffff800081046e6c>] kmemleak_alloc+0xb8/0xc8\n    [<ffff8000803e6c3c>] __kmalloc_node_track_caller_noprof+0x380/0x474\n    [<ffff800080363b74>] kstrdup+0x70/0xfc\n    [<ffff80007bb3c6a4>] isofs_parse_param+0x228/0x2c0 [isofs]\n    [<ffff8000804d7f68>] vfs_parse_fs_param+0xf4/0x164\n    [<ffff8000804d8064>] vfs_parse_fs_string+0x8c/0xd4\n    [<ffff8000804d815c>] vfs_parse_monolithic_sep+0xb0/0xfc\n    [<ffff8000804d81d8>] generic_parse_monolithic+0x30/0x3c\n    [<ffff8000804d8bfc>] parse_monolithic_mount_data+0x40/0x4c\n    [<ffff8000804b6a64>] path_mount+0x6c4/0x9ec\n    [<ffff8000804b6e38>] do_mount+0xac/0xc4\n    [<ffff8000804b7494>] __arm64_sys_mount+0x16c/0x2b0\n    [<ffff80008002b8dc>] invoke_syscall+0x7c/0x104\n    [<ffff80008002ba44>] el0_svc_common.constprop.1+0xe0/0x104\n    [<ffff80008002ba94>] do_el0_svc+0x2c/0x38\n    [<ffff800081041108>] el0_svc+0x3c/0x1b8\n\nThe opt->iocharset is freed inside the isofs_fill_super function,\nBut there may be situations where it's not possible to\nenter this function.\n\nFor example, in the get_tree_bdev_flags function,when\nencountering the situation where \"Can't mount, would change RO state,\"\nIn such a case, isofs_fill_super will not have the opportunity\nto be called,which means that opt->iocharset will not have the chance\nto be freed,ultimately leading to a memory leak.\n\nLet's move the memory freeing of opt->iocharset into\nisofs_free_fc function.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: isofs: evitar pérdida de memoria en iocharset Se encontró una pérdida de memoria como la siguiente: objeto sin referencia 0xffff0000d10164d8 (tamaño 8): comm \"pool-udisksd\", pid 108217, jiffies 4295408555 volcado hexadecimal (primeros 8 bytes): 75 74 66 38 00 cc cc cc utf8.... backtrace (crc de430d31): [] kmemleak_alloc+0xb8/0xc8 [] __kmalloc_node_track_caller_noprof+0x380/0x474 [] kstrdup+0x70/0xfc [] parámetro_parse_isofs+0x228/0x2c0 [isofs] [] parámetro_fs_parse_vfs+0xf4/0x164 [] cadena_fs_parse_vfs+0x8c/0xd4 [] sep_monolítico_vfs+0xb0/0xfc [] parámetro_monolítico_genérico+0x30/0x3c [] analizar_datos_de_montaje_monolítico+0x40/0x4c [] ruta_de_montaje+0x6c4/0x9ec [] hacer_montaje+0xac/0xc4 [] __arm64_montaje_del_sistema+0x16c/0x2b0 [] invocar_llamada_del_sistema+0x7c/0x104 [] el0_svc_common.constprop.1+0xe0/0x104 [] do_el0_svc+0x2c/0x38 [] el0_svc+0x3c/0x1b8 El opt-&gt;iocharset se libera dentro de la función isofs_fill_super, pero puede haber situaciones en las que no sea posible ingresar a esta función. Por ejemplo, en la función get_tree_bdev_flags, cuando se encuentra la situación en la que \"No se puede montar, cambiaría el estado de RO\", en tal caso, isofs_fill_super no tendrá la oportunidad de ser llamado, lo que significa que opt-&gt;iocharset no tendrá la oportunidad de ser liberado, lo que finalmente conduce a una pérdida de memoria. Pasemos la liberación de memoria de opt-&gt;iocharset a la función isofs_free_fc.",
      },
   ],
   id: "CVE-2024-56534",
   lastModified: "2025-01-14T15:49:15.640",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 5.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-12-27T14:15:32.940",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/0b5bbeee4de616a268db77e2f40f19ab010a367b",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/0fbab266ca8000333c966f5b58cb9b9cac658573",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/34f090ddb3630a26e5a6b220bf3bfaf5c7b70393",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-401",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



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.