CVE-2025-71072

{"id": "CVE-2025-71072", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a2e459555c5f9da3e619b7e47a63f98574dc75f1", "lessThan": "4b0fe71fb3965d0db83cdfc2f4fe0b3227d70113", "versionType": "git"}, {"status": "affected", "version": "a2e459555c5f9da3e619b7e47a63f98574dc75f1", "lessThan": "4642686699a46718d7f2fb5acd1e9d866a9d9cca", "versionType": "git"}, {"status": "affected", "version": "a2e459555c5f9da3e619b7e47a63f98574dc75f1", "lessThan": "e1b4c6a58304fd490124cc2b454d80edc786665c", "versionType": "git"}], "programFiles": ["fs/libfs.c", "include/linux/fs.h", "mm/shmem.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"status": "unaffected", "version": "0", "lessThan": "6.6", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.64", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.3", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/libfs.c", "include/linux/fs.h", "mm/shmem.c"], "defaultStatus": "affected"}]}], "published": "2026-01-13T16:16:06.633", "references": [{"url": "https://git.kernel.org/stable/c/4642686699a46718d7f2fb5acd1e9d866a9d9cca", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4b0fe71fb3965d0db83cdfc2f4fe0b3227d70113", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e1b4c6a58304fd490124cc2b454d80edc786665c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nshmem: fix recovery on rename failures\n\nmaple_tree insertions can fail if we are seriously short on memory;\nsimple_offset_rename() does not recover well if it runs into that.\nThe same goes for simple_offset_rename_exchange().\n\nMoreover, shmem_whiteout() expects that if it succeeds, the caller will\nprogress to d_move(), i.e. that shmem_rename2() won't fail past the\nsuccessful call of shmem_whiteout().\n\nNot hard to fix, fortunately - mtree_store() can't fail if the index we\nare trying to store into is already present in the tree as a singleton.\n\nFor simple_offset_rename_exchange() that's enough - we just need to be\ncareful about the order of operations.\n\nFor simple_offset_rename() solution is to preinsert the target into the\ntree for new_dir; the rest can be done without any potentially failing\noperations.\n\nThat preinsertion has to be done in shmem_rename2() rather than in\nsimple_offset_rename() itself - otherwise we'd need to deal with the\npossibility of failure after successful shmem_whiteout()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nshmem: corrige la recuperaci\u00f3n en fallos de renombrado\n\nLas inserciones de maple_tree pueden fallar si tenemos una escasez grave de memoria; simple_offset_rename() no se recupera bien si se encuentra con eso. Lo mismo ocurre con simple_offset_rename_exchange().\n\nAdem\u00e1s, shmem_whiteout() espera que, si tiene \u00e9xito, el llamador avance a d_move(), es decir, que shmem_rename2() no falle despu\u00e9s de la llamada exitosa de shmem_whiteout().\n\nNo es dif\u00edcil de arreglar, afortunadamente: mtree_store() no puede fallar si el \u00edndice en el que estamos intentando almacenar ya est\u00e1 presente en el \u00e1rbol como un singleton.\n\nPara simple_offset_rename_exchange() eso es suficiente; solo necesitamos tener cuidado con el orden de las operaciones.\n\nPara simple_offset_rename() la soluci\u00f3n es preinsertar el objetivo en el \u00e1rbol para new_dir; el resto se puede hacer sin ninguna operaci\u00f3n que pueda fallar.\n\nEsa preinserci\u00f3n tiene que hacerse en shmem_rename2() en lugar de en simple_offset_rename() mismo; de lo contrario, necesitar\u00edamos lidiar con la posibilidad de fallo despu\u00e9s de un shmem_whiteout() exitoso."}], "lastModified": "2026-06-17T10:03:36.203", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "44DC6A0C-1CDA-49FB-A889-9025B3D5827A", "versionEndExcluding": "6.12.64", "versionStartIncluding": "6.6.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2DC484D8-FB4F-4112-900F-AE333B6FE7A7", "versionEndExcluding": "6.18.3", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.6:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E346B162-D566-4E62-ABDE-ECBFB21B8BFD"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EF854A1-ABB1-4E93-BE9A-44569EC76C0D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB5B7DFC-C36B-45D8-922C-877569FDDF43"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}