cve-2024-39477
Vulnerability from cvelistv5
Published
2024-07-05 06:55
Modified
2024-12-19 09:06
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/hugetlb: do not call vma_add_reservation upon ENOMEM
sysbot reported a splat [1] on __unmap_hugepage_range(). This is because
vma_needs_reservation() can return -ENOMEM if
allocate_file_region_entries() fails to allocate the file_region struct
for the reservation.
Check for that and do not call vma_add_reservation() if that is the case,
otherwise region_abort() and region_del() will see that we do not have any
file_regions.
If we detect that vma_needs_reservation() returned -ENOMEM, we clear the
hugetlb_restore_reserve flag as if this reservation was still consumed, so
free_huge_folio() will not increment the resv count.
[1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa
References
Impacted products
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-02T04:26:15.943Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13" } ], "title": "CVE Program Container" }, { "metrics": [ { "other": { "content": { "id": "CVE-2024-39477", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-09-10T17:07:38.781989Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-09-11T17:34:39.612Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "mm/hugetlb.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "aa998f9dcb34c28448f86e8f5490f20d5eb0eac7", "status": "affected", "version": "df7a6d1f64056aec572162c5d35ed9ff86ece6f3", "versionType": "git" }, { "lessThan": "8daf9c702ee7f825f0de8600abff764acfedea13", "status": "affected", "version": "df7a6d1f64056aec572162c5d35ed9ff86ece6f3", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "mm/hugetlb.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.9" }, { "lessThan": "6.9", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.9.*", "status": "unaffected", "version": "6.9.5", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: do not call vma_add_reservation upon ENOMEM\n\nsysbot reported a splat [1] on __unmap_hugepage_range(). This is because\nvma_needs_reservation() can return -ENOMEM if\nallocate_file_region_entries() fails to allocate the file_region struct\nfor the reservation.\n\nCheck for that and do not call vma_add_reservation() if that is the case,\notherwise region_abort() and region_del() will see that we do not have any\nfile_regions.\n\nIf we detect that vma_needs_reservation() returned -ENOMEM, we clear the\nhugetlb_restore_reserve flag as if this reservation was still consumed, so\nfree_huge_folio() will not increment the resv count.\n\n[1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa" } ], "providerMetadata": { "dateUpdated": "2024-12-19T09:06:56.000Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7" }, { "url": "https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13" } ], "title": "mm/hugetlb: do not call vma_add_reservation upon ENOMEM", "x_generator": { "engine": "bippy-5f407fcff5a0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2024-39477", "datePublished": "2024-07-05T06:55:07.268Z", "dateReserved": "2024-06-25T14:23:23.746Z", "dateUpdated": "2024-12-19T09:06:56.000Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2024-39477\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-05T07:15:10.413\",\"lastModified\":\"2024-11-21T09:27:45.047\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/hugetlb: do not call vma_add_reservation upon ENOMEM\\n\\nsysbot reported a splat [1] on __unmap_hugepage_range(). This is because\\nvma_needs_reservation() can return -ENOMEM if\\nallocate_file_region_entries() fails to allocate the file_region struct\\nfor the reservation.\\n\\nCheck for that and do not call vma_add_reservation() if that is the case,\\notherwise region_abort() and region_del() will see that we do not have any\\nfile_regions.\\n\\nIf we detect that vma_needs_reservation() returned -ENOMEM, we clear the\\nhugetlb_restore_reserve flag as if this reservation was still consumed, so\\nfree_huge_folio() will not increment the resv count.\\n\\n[1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mm/hugetlb: no llame a vma_add_reservation cuando ENOMEM sysbot inform\u00f3 un splat [1] en __unmap_hugepage_range(). Esto se debe a que vma_needs_reservation() puede devolver -ENOMEM si allocate_file_region_entries() no puede asignar la estructura file_region para la reserva. Verifique eso y no llame a vma_add_reservation() si ese es el caso; de lo contrario, region_abort() y region_del() ver\u00e1n que no tenemos ning\u00fan file_regions. Si detectamos que vma_needs_reservation() devolvi\u00f3 -ENOMEM, borramos el indicador hugetlb_restore_reserve como si esta reserva todav\u00eda estuviera consumida, por lo que free_huge_folio() no incrementar\u00e1 el recuento de resv. [1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa\"}],\"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\":\"CWE-770\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.9\",\"versionEndExcluding\":\"6.9.5\",\"matchCriteriaId\":\"54EDFD02-25E6-4BC8-9AD0-0A59881F400A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"C40DD2D9-90E3-4E95-9F1A-E7C680F11F2A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10.0:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"54D5209E-E390-45C5-A5D1-C9EDB40819F7\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\"]}]}}" } }
Loading…
Loading…
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.