cve-2024-39482
Vulnerability from cvelistv5
Published
2024-07-05 06:55
Modified
2024-11-05 09:32
Severity ?
EPSS score ?
Summary
bcache: fix variable length array abuse in btree_iter
References
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2024-39482", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-07-08T17:54:07.988323Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-07-08T17:54:15.435Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-08-02T04:26:15.917Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/md/bcache/bset.c", "drivers/md/bcache/bset.h", "drivers/md/bcache/btree.c", "drivers/md/bcache/super.c", "drivers/md/bcache/sysfs.c", "drivers/md/bcache/writeback.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "2c3d7b03b658", "status": "affected", "version": "1da177e4c3f4", "versionType": "git" }, { "lessThan": "5a1922adc579", "status": "affected", "version": "1da177e4c3f4", "versionType": "git" }, { "lessThan": "934e1e433185", "status": "affected", "version": "1da177e4c3f4", "versionType": "git" }, { "lessThan": "6479b9f41583", "status": "affected", "version": "1da177e4c3f4", "versionType": "git" }, { "lessThan": "0c31344e22dd", "status": "affected", "version": "1da177e4c3f4", "versionType": "git" }, { "lessThan": "3a861560ccb3", "status": "affected", "version": "1da177e4c3f4", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/md/bcache/bset.c", "drivers/md/bcache/bset.h", "drivers/md/bcache/btree.c", "drivers/md/bcache/super.c", "drivers/md/bcache/sysfs.c", "drivers/md/bcache/writeback.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.221", "versionType": "semver" }, { "lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.162", "versionType": "semver" }, { "lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.94", "versionType": "semver" }, { "lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.34", "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\nbcache: fix variable length array abuse in btree_iter\n\nbtree_iter is used in two ways: either allocated on the stack with a\nfixed size MAX_BSETS, or from a mempool with a dynamic size based on the\nspecific cache set. Previously, the struct had a fixed-length array of\nsize MAX_BSETS which was indexed out-of-bounds for the dynamically-sized\niterators, which causes UBSAN to complain.\n\nThis patch uses the same approach as in bcachefs\u0027s sort_iter and splits\nthe iterator into a btree_iter with a flexible array member and a\nbtree_iter_stack which embeds a btree_iter as well as a fixed-length\ndata array." } ], "providerMetadata": { "dateUpdated": "2024-11-05T09:32:10.601Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b" }, { "url": "https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023" }, { "url": "https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02" }, { "url": "https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148" }, { "url": "https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671" }, { "url": "https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31" } ], "title": "bcache: fix variable length array abuse in btree_iter", "x_generator": { "engine": "bippy-9e1c9544281a" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2024-39482", "datePublished": "2024-07-05T06:55:10.599Z", "dateReserved": "2024-06-25T14:23:23.746Z", "dateUpdated": "2024-11-05T09:32:10.601Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2024-39482\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-05T07:15:10.710\",\"lastModified\":\"2024-07-08T18:00:28.200\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbcache: fix variable length array abuse in btree_iter\\n\\nbtree_iter is used in two ways: either allocated on the stack with a\\nfixed size MAX_BSETS, or from a mempool with a dynamic size based on the\\nspecific cache set. Previously, the struct had a fixed-length array of\\nsize MAX_BSETS which was indexed out-of-bounds for the dynamically-sized\\niterators, which causes UBSAN to complain.\\n\\nThis patch uses the same approach as in bcachefs\u0027s sort_iter and splits\\nthe iterator into a btree_iter with a flexible array member and a\\nbtree_iter_stack which embeds a btree_iter as well as a fixed-length\\ndata array.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bcache: corrige el abuso de matriz de longitud variable en btree_iter btree_iter se usa de dos maneras: ya sea asignado en la pila con un tama\u00f1o fijo MAX_BSETS, o desde un mempool con un tama\u00f1o din\u00e1mico basado en el conjunto de cach\u00e9 espec\u00edfico. Anteriormente, la estructura ten\u00eda una matriz de longitud fija de tama\u00f1o MAX_BSETS que estaba indexada fuera de los l\u00edmites para los iteradores de tama\u00f1o din\u00e1mico, lo que provoca que UBSAN se queje. Este parche utiliza el mismo enfoque que en sort_iter de bcachefs y divide el iterador en un btree_iter con un miembro de matriz flexible y un btree_iter_stack que incorpora un btree_iter as\u00ed como una matriz de datos de longitud fija.\"}],\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"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\":\"5.10\",\"versionEndExcluding\":\"5.10.221\",\"matchCriteriaId\":\"520E9C39-AB38-4A1C-B857-2030B4982A71\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15\",\"versionEndExcluding\":\"5.15.162\",\"matchCriteriaId\":\"4626E4B7-D5F4-42CC-93A8-B73E6384273F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.1.94\",\"matchCriteriaId\":\"B5A86346-2984-4261-AC12-29EACB186000\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.34\",\"matchCriteriaId\":\"AC0C6E24-8240-425A-BD1A-F78E6D3A67FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.9\",\"versionEndExcluding\":\"6.9.5\",\"matchCriteriaId\":\"54EDFD02-25E6-4BC8-9AD0-0A59881F400A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Mailing List\",\"Patch\"]}]}}" } }
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Sightings
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Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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