{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-39276", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-24T13:53:25.552Z", "datePublished": "2024-06-25T14:22:38.886Z", "dateUpdated": "2026-05-23T15:49:57.161Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:49:57.161Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix mb_cache_entry's e_refcnt leak in ext4_xattr_block_cache_find()\n\nSyzbot reports a warning as follows:\n\n============================================\nWARNING: CPU: 0 PID: 5075 at fs/mbcache.c:419 mb_cache_destroy+0x224/0x290\nModules linked in:\nCPU: 0 PID: 5075 Comm: syz-executor199 Not tainted 6.9.0-rc6-gb947cc5bf6d7\nRIP: 0010:mb_cache_destroy+0x224/0x290 fs/mbcache.c:419\nCall Trace:\n \n ext4_put_super+0x6d4/0xcd0 fs/ext4/super.c:1375\n generic_shutdown_super+0x136/0x2d0 fs/super.c:641\n kill_block_super+0x44/0x90 fs/super.c:1675\n ext4_kill_sb+0x68/0xa0 fs/ext4/super.c:7327\n[...]\n============================================\n\nThis is because when finding an entry in ext4_xattr_block_cache_find(), if\next4_sb_bread() returns -ENOMEM, the ce's e_refcnt, which has already grown\nin the __entry_find(), won't be put away, and eventually trigger the above\nissue in mb_cache_destroy() due to reference count leakage.\n\nSo call mb_cache_entry_put() on the -ENOMEM error branch as a quick fix." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/xattr.c" ], "versions": [ { "version": "b878c8a7f08f0c225b6a46ba1ac867e9c5d17807", "lessThan": "9ad75e78747b5a50dc5a52f0f8e92e920a653f16", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "896a7e7d0d555ad8b2b46af0c2fa7de7467f9483", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "76dc776153a47372719d664e0fc50d6355791abb", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "681ff9a09accd8a4379f8bd30b7a1641ee19bb3e", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "e941b712e758f615d311946bf98216e79145ccd9", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "a95df6f04f2c37291adf26a74205cde0314d4577", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "b37c0edef4e66fb21a2fbc211471195a383e5ab8", "status": "affected", "versionType": "git" }, { "version": "fb265c9cb49e2074ddcdd4de99728aefdd3b3592", "lessThan": "0c0b4a49d3e7f49690a6827a41faeffad5df7e21", "status": "affected", "versionType": "git" }, { "version": "9da1f6d06b7a6d068e68fcfd7cbbf6b586d888e1", "status": "affected", "versionType": "git" }, { "version": "81313ed2c705d958744882a269bf4a5e3ddec95e", "status": "affected", "versionType": "git" }, { "version": "4.19.14", "lessThan": "4.19.316", "status": "affected", "versionType": "semver" }, { "version": "4.14.92", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.20.1", "lessThan": "4.21", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/xattr.c" ], "versions": [ { "version": "5.0", "status": "affected" }, { "version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.316", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.278", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.219", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.161", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.94", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.34", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.5", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.14", "versionEndExcluding": "4.19.316" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.4.278" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.10.219" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.15.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.1.94" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.6.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.9.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.92" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9ad75e78747b5a50dc5a52f0f8e92e920a653f16" }, { "url": "https://git.kernel.org/stable/c/896a7e7d0d555ad8b2b46af0c2fa7de7467f9483" }, { "url": "https://git.kernel.org/stable/c/76dc776153a47372719d664e0fc50d6355791abb" }, { "url": "https://git.kernel.org/stable/c/681ff9a09accd8a4379f8bd30b7a1641ee19bb3e" }, { "url": "https://git.kernel.org/stable/c/e941b712e758f615d311946bf98216e79145ccd9" }, { "url": "https://git.kernel.org/stable/c/a95df6f04f2c37291adf26a74205cde0314d4577" }, { "url": "https://git.kernel.org/stable/c/b37c0edef4e66fb21a2fbc211471195a383e5ab8" }, { "url": "https://git.kernel.org/stable/c/0c0b4a49d3e7f49690a6827a41faeffad5df7e21" } ], "title": "ext4: fix mb_cache_entry's e_refcnt leak in ext4_xattr_block_cache_find()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "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:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-25T15:26:44.344702Z", "id": "CVE-2024-39276", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-05T14:27:26.405Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:19:20.631Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/9ad75e78747b5a50dc5a52f0f8e92e920a653f16", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/896a7e7d0d555ad8b2b46af0c2fa7de7467f9483", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/76dc776153a47372719d664e0fc50d6355791abb", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/681ff9a09accd8a4379f8bd30b7a1641ee19bb3e", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e941b712e758f615d311946bf98216e79145ccd9", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/a95df6f04f2c37291adf26a74205cde0314d4577", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b37c0edef4e66fb21a2fbc211471195a383e5ab8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/0c0b4a49d3e7f49690a6827a41faeffad5df7e21", "tags": [ "x_transferred" ] } ] } ] } }