cve-2024-44973
Vulnerability from cvelistv5
Published
2024-09-04 19:00
Modified
2025-05-04 09:30
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mm, slub: do not call do_slab_free for kfence object In 782f8906f805 the freeing of kfence objects was moved from deep inside do_slab_free to the wrapper functions outside. This is a nice change, but unfortunately it missed one spot in __kmem_cache_free_bulk. This results in a crash like this: BUG skbuff_head_cache (Tainted: G S B E ): Padding overwritten. 0xffff88907fea0f00-0xffff88907fea0fff @offset=3840 slab_err (mm/slub.c:1129) free_to_partial_list (mm/slub.c:? mm/slub.c:4036) slab_pad_check (mm/slub.c:864 mm/slub.c:1290) check_slab (mm/slub.c:?) free_to_partial_list (mm/slub.c:3171 mm/slub.c:4036) kmem_cache_alloc_bulk (mm/slub.c:? mm/slub.c:4495 mm/slub.c:4586 mm/slub.c:4635) napi_build_skb (net/core/skbuff.c:348 net/core/skbuff.c:527 net/core/skbuff.c:549) All the other callers to do_slab_free appear to be ok. Add a kfence_free check in __kmem_cache_free_bulk to avoid the crash.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a371d558e6f3aed977a8a7346350557de5d25190Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b35cd7f1e969aaa63e6716d82480f6b8a3230949Patch
Impacted products
Vendor Product Version
Linux Linux Version: 782f8906f8057efc7151b4b98b0a0280a71d005f
Version: 782f8906f8057efc7151b4b98b0a0280a71d005f
 Create a notification for this product.
   Linux Linux Version: 6.8
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
   containers: {
      adp: [
         {
            metrics: [
               {
                  other: {
                     content: {
                        id: "CVE-2024-44973",
                        options: [
                           {
                              Exploitation: "none",
                           },
                           {
                              Automatable: "no",
                           },
                           {
                              "Technical Impact": "partial",
                           },
                        ],
                        role: "CISA Coordinator",
                        timestamp: "2024-09-10T17:39:02.040290Z",
                        version: "2.0.3",
                     },
                     type: "ssvc",
                  },
               },
            ],
            providerMetadata: {
               dateUpdated: "2024-09-12T17:33:34.160Z",
               orgId: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
               shortName: "CISA-ADP",
            },
            title: "CISA ADP Vulnrichment",
         },
      ],
      cna: {
         affected: [
            {
               defaultStatus: "unaffected",
               product: "Linux",
               programFiles: [
                  "mm/slub.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     lessThan: "b35cd7f1e969aaa63e6716d82480f6b8a3230949",
                     status: "affected",
                     version: "782f8906f8057efc7151b4b98b0a0280a71d005f",
                     versionType: "git",
                  },
                  {
                     lessThan: "a371d558e6f3aed977a8a7346350557de5d25190",
                     status: "affected",
                     version: "782f8906f8057efc7151b4b98b0a0280a71d005f",
                     versionType: "git",
                  },
               ],
            },
            {
               defaultStatus: "affected",
               product: "Linux",
               programFiles: [
                  "mm/slub.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     status: "affected",
                     version: "6.8",
                  },
                  {
                     lessThan: "6.8",
                     status: "unaffected",
                     version: "0",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "6.10.*",
                     status: "unaffected",
                     version: "6.10.5",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "*",
                     status: "unaffected",
                     version: "6.11",
                     versionType: "original_commit_for_fix",
                  },
               ],
            },
         ],
         cpeApplicability: [
            {
               nodes: [
                  {
                     cpeMatch: [
                        {
                           criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           versionEndExcluding: "6.10.5",
                           versionStartIncluding: "6.8",
                           vulnerable: true,
                        },
                        {
                           criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           versionEndExcluding: "6.11",
                           versionStartIncluding: "6.8",
                           vulnerable: true,
                        },
                     ],
                     negate: false,
                     operator: "OR",
                  },
               ],
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "In the Linux kernel, the following vulnerability has been resolved:\n\nmm, slub: do not call do_slab_free for kfence object\n\nIn 782f8906f805 the freeing of kfence objects was moved from deep\ninside do_slab_free to the wrapper functions outside. This is a nice\nchange, but unfortunately it missed one spot in __kmem_cache_free_bulk.\n\nThis results in a crash like this:\n\nBUG skbuff_head_cache (Tainted: G S  B       E     ): Padding overwritten. 0xffff88907fea0f00-0xffff88907fea0fff @offset=3840\n\nslab_err (mm/slub.c:1129)\nfree_to_partial_list (mm/slub.c:? mm/slub.c:4036)\nslab_pad_check (mm/slub.c:864 mm/slub.c:1290)\ncheck_slab (mm/slub.c:?)\nfree_to_partial_list (mm/slub.c:3171 mm/slub.c:4036)\nkmem_cache_alloc_bulk (mm/slub.c:? mm/slub.c:4495 mm/slub.c:4586 mm/slub.c:4635)\nnapi_build_skb (net/core/skbuff.c:348 net/core/skbuff.c:527 net/core/skbuff.c:549)\n\nAll the other callers to do_slab_free appear to be ok.\n\nAdd a kfence_free check in __kmem_cache_free_bulk to avoid the crash.",
            },
         ],
         providerMetadata: {
            dateUpdated: "2025-05-04T09:30:06.043Z",
            orgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            shortName: "Linux",
         },
         references: [
            {
               url: "https://git.kernel.org/stable/c/b35cd7f1e969aaa63e6716d82480f6b8a3230949",
            },
            {
               url: "https://git.kernel.org/stable/c/a371d558e6f3aed977a8a7346350557de5d25190",
            },
         ],
         title: "mm, slub: do not call do_slab_free for kfence object",
         x_generator: {
            engine: "bippy-1.2.0",
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      assignerShortName: "Linux",
      cveId: "CVE-2024-44973",
      datePublished: "2024-09-04T19:00:23.444Z",
      dateReserved: "2024-08-21T05:34:56.669Z",
      dateUpdated: "2025-05-04T09:30:06.043Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2024-44973\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-04T19:15:31.487\",\"lastModified\":\"2024-10-03T14:23:09.147\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm, slub: do not call do_slab_free for kfence object\\n\\nIn 782f8906f805 the freeing of kfence objects was moved from deep\\ninside do_slab_free to the wrapper functions outside. This is a nice\\nchange, but unfortunately it missed one spot in __kmem_cache_free_bulk.\\n\\nThis results in a crash like this:\\n\\nBUG skbuff_head_cache (Tainted: G S  B       E     ): Padding overwritten. 0xffff88907fea0f00-0xffff88907fea0fff @offset=3840\\n\\nslab_err (mm/slub.c:1129)\\nfree_to_partial_list (mm/slub.c:? mm/slub.c:4036)\\nslab_pad_check (mm/slub.c:864 mm/slub.c:1290)\\ncheck_slab (mm/slub.c:?)\\nfree_to_partial_list (mm/slub.c:3171 mm/slub.c:4036)\\nkmem_cache_alloc_bulk (mm/slub.c:? mm/slub.c:4495 mm/slub.c:4586 mm/slub.c:4635)\\nnapi_build_skb (net/core/skbuff.c:348 net/core/skbuff.c:527 net/core/skbuff.c:549)\\n\\nAll the other callers to do_slab_free appear to be ok.\\n\\nAdd a kfence_free check in __kmem_cache_free_bulk to avoid the crash.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm, slub: no llamar a do_slab_free para el objeto kfence En 782f8906f805, la liberación de objetos kfence se trasladó desde lo profundo de do_slab_free a las funciones envolventes externas. Este es un cambio agradable, pero desafortunadamente omitió un punto en __kmem_cache_free_bulk. Esto da como resultado un fallo como este: ERROR skbuff_head_cache (Tainted: GSBE ): Relleno sobrescrito. 0xffff88907fea0f00-0xffff88907fea0fff @offset=3840 error_losa (mm/slub.c:1129) lista_libre_a_parcial (mm/slub.c:? mm/slub.c:4036) comprobación_almohadilla_losa (mm/slub.c:864 mm/slub.c:1290) comprobación_losa (mm/slub.c:?) lista_libre_a_parcial (mm/slub.c:3171 mm/slub.c:4036) kmem_cache_alloc_bulk (mm/slub.c:? mm/slub.c:4495 mm/slub.c:4586 mm/slub.c:4635) napi_build_skb (net/core/skbuff.c:348 net/core/skbuff.c:527 net/core/skbuff.c:549) Todos los demás llamadores de do_slab_free parecen estar bien. Agregue una comprobación de kfence_free en __kmem_cache_free_bulk para evitar el bloqueo.\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.10.5\",\"matchCriteriaId\":\"48E239A0-A959-4FAB-8475-D045FED3DDA5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a371d558e6f3aed977a8a7346350557de5d25190\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b35cd7f1e969aaa63e6716d82480f6b8a3230949\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
      vulnrichment: {
         containers: "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-44973\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:39:02.040290Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:24.801Z\"}}], \"cna\": {\"title\": \"mm, slub: do not call do_slab_free for kfence object\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"782f8906f8057efc7151b4b98b0a0280a71d005f\", \"lessThan\": \"b35cd7f1e969aaa63e6716d82480f6b8a3230949\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"782f8906f8057efc7151b4b98b0a0280a71d005f\", \"lessThan\": \"a371d558e6f3aed977a8a7346350557de5d25190\", \"versionType\": \"git\"}], \"programFiles\": [\"mm/slub.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.10.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"mm/slub.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b35cd7f1e969aaa63e6716d82480f6b8a3230949\"}, {\"url\": \"https://git.kernel.org/stable/c/a371d558e6f3aed977a8a7346350557de5d25190\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm, slub: do not call do_slab_free for kfence object\\n\\nIn 782f8906f805 the freeing of kfence objects was moved from deep\\ninside do_slab_free to the wrapper functions outside. This is a nice\\nchange, but unfortunately it missed one spot in __kmem_cache_free_bulk.\\n\\nThis results in a crash like this:\\n\\nBUG skbuff_head_cache (Tainted: G S  B       E     ): Padding overwritten. 0xffff88907fea0f00-0xffff88907fea0fff @offset=3840\\n\\nslab_err (mm/slub.c:1129)\\nfree_to_partial_list (mm/slub.c:? mm/slub.c:4036)\\nslab_pad_check (mm/slub.c:864 mm/slub.c:1290)\\ncheck_slab (mm/slub.c:?)\\nfree_to_partial_list (mm/slub.c:3171 mm/slub.c:4036)\\nkmem_cache_alloc_bulk (mm/slub.c:? mm/slub.c:4495 mm/slub.c:4586 mm/slub.c:4635)\\nnapi_build_skb (net/core/skbuff.c:348 net/core/skbuff.c:527 net/core/skbuff.c:549)\\n\\nAll the other callers to do_slab_free appear to be ok.\\n\\nAdd a kfence_free check in __kmem_cache_free_bulk to avoid the crash.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.5\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"6.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:30:06.043Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2024-44973\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:30:06.043Z\", \"dateReserved\": \"2024-08-21T05:34:56.669Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-04T19:00:23.444Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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.