CVE-2024-50088

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If any of the following calls to \"read_one_inode()\nreturns NULL,\n\n\tdir = read_one_inode(root, parent_objectid);\n\tif (!dir) {\n\t\tret = -ENOENT;\n\t\tgoto out;\n\t}\n\n\tinode = read_one_inode(root, inode_objectid);\n\tif (!inode) {\n\t\tret = -EIO;\n\t\tgoto out;\n\t}\n\nthen \"name.name\" would be freed on \"out\" before being initialized.\n\nout:\n\t...\n\tkfree(name.name);\n\nThis issue was reported by Coverity with CID 1526744."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only through btrfs log-tree replay during `open_ctree()`/`btrfs_replay_log()`, i.e. by mounting an attacker-crafted filesystem image, which requires local access to the system. The image can be supplied as an ordinary file and loop-mounted, so no physical device access is needed.\nAC:L - The attacker fully authors the on-disk log tree \u2014 inode ref/extref keys, parent objectids, and name lengths \u2014 so both the NULL `read_one_inode()` return and the stack-slot priming are deterministic; `replay_one_buffer()` deliberately continues past `-ENOENT`, letting the attacker stage a preceding call that leaves a known dangling pointer in the identical stack slot. No unpredictable condition must be won.\nPR:L - Mounting btrfs nominally needs CAP_SYS_ADMIN, but udisks2/`LoopSetup` and desktop/kiosk automount let a basic unprivileged local user get an arbitrary attacker-supplied btrfs image mounted, so real root in the initial namespace is not required.\nUI:N - In the realistic kiosk/workstation deployment, automount (or the attacker's own udisks2 loop-mount of a file they control) mounts the crafted image without any other user participating, and replay then runs unconditionally \u2014 including for read-only mounts.\nS:U - The corruption is confined to the kernel's own slab allocator and control flow within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `kfree()` of an uninitialized/stale pointer yields a controlled double free of an attacker-size-selected kmalloc object, which reallocates into a live kernel object and gives a use-after-free read primitive over arbitrary kernel memory.\nI:H - The same double free/UAF over a general-purpose kmalloc slab permits heap grooming, type confusion, and arbitrary kernel write, which is exploitable for control-flow hijack and privilege escalation.\nA:H - In the common case the uninitialized stack value is not a valid slab pointer, so `kfree()` faults in `virt_to_head_page()`/`__free_frozen_pages()` and oopses during mount; the double-free variant trips SLUB corruption BUGs. Either way the kernel panics."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/tree-log.c"], "versions": [{"version": "1cf474cd474bc5d3ef63086ffd009a87a5b7bb2e", "lessThan": "12cf028381aa19bc38465341512c280256e8d82d", "status": "affected", "versionType": "git"}, {"version": "e43eec81c5167b655b72c781b0e75e62a05e415e", "lessThan": "e11ce03b58743bf1e096c48fcaa7e6f08eb75dfa", "status": "affected", "versionType": "git"}, {"version": "e43eec81c5167b655b72c781b0e75e62a05e415e", "lessThan": "a941f3d5b1469c60a7e70e775584f110b47e0d16", "status": "affected", "versionType": "git"}, {"version": "e43eec81c5167b655b72c781b0e75e62a05e415e", "lessThan": "66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4", "status": "affected", "versionType": "git"}, {"version": "6.1.57", "lessThan": "6.1.114", "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/btrfs/tree-log.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.114", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.58", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.5", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "6.1.57", "versionEndExcluding": "6.1.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.11.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/12cf028381aa19bc38465341512c280256e8d82d"}, {"url": "https://git.kernel.org/stable/c/e11ce03b58743bf1e096c48fcaa7e6f08eb75dfa"}, {"url": "https://git.kernel.org/stable/c/a941f3d5b1469c60a7e70e775584f110b47e0d16"}, {"url": "https://git.kernel.org/stable/c/66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4"}], "title": "btrfs: fix uninitialized pointer free in add_inode_ref()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-50088", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-10-01T20:23:09.128991Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-824", "description": "CWE-824 Access of Uninitialized Pointer"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:27:20.079Z"}}, {"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:25:21.785Z"}}]}}

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If any of the following calls to \"read_one_inode()\nreturns NULL,\n\n\tdir = read_one_inode(root, parent_objectid);\n\tif (!dir) {\n\t\tret = -ENOENT;\n\t\tgoto out;\n\t}\n\n\tinode = read_one_inode(root, inode_objectid);\n\tif (!inode) {\n\t\tret = -EIO;\n\t\tgoto out;\n\t}\n\nthen \"name.name\" would be freed on \"out\" before being initialized.\n\nout:\n\t...\n\tkfree(name.name);\n\nThis issue was reported by Coverity with CID 1526744."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.114", "versionStartIncluding": "6.1.57"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.58", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.5", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "6.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:54:28.868Z"}}}, "cveMetadata": {"cveId": "CVE-2024-50088", "state": "PUBLISHED", "dateUpdated": "2026-05-23T15:54:28.868Z", "dateReserved": "2024-10-21T19:36:19.942Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-29T00:50:31.362Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/tree-log.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "12cf028381aa19bc38465341512c280256e8d82d", "status": "affected", "version": "1cf474cd474bc5d3ef63086ffd009a87a5b7bb2e", "versionType": "git"}, {"lessThan": "e11ce03b58743bf1e096c48fcaa7e6f08eb75dfa", "status": "affected", "version": "e43eec81c5167b655b72c781b0e75e62a05e415e", "versionType": "git"}, {"lessThan": "a941f3d5b1469c60a7e70e775584f110b47e0d16", "status": "affected", "version": "e43eec81c5167b655b72c781b0e75e62a05e415e", "versionType": "git"}, {"lessThan": "66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4", "status": "affected", "version": "e43eec81c5167b655b72c781b0e75e62a05e415e", "versionType": "git"}, {"lessThan": "6.1.114", "status": "affected", "version": "6.1.57", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/tree-log.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.114", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.58", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "311F2B7D-7AE0-4373-81B3-7806F9A6E2DE", "versionEndExcluding": "6.1.114", "versionStartIncluding": "6.1.57", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6B9489BC-825E-4EEE-8D93-F93C801988C8", "versionEndExcluding": "6.6.58", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6E62D61A-F704-44DB-A311-17B7534DA7BC", "versionEndExcluding": "6.11.5", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix uninitialized pointer free in add_inode_ref()\n\nThe add_inode_ref() function does not initialize the \"name\" struct when\nit is declared. If any of the following calls to \"read_one_inode()\nreturns NULL,\n\n\tdir = read_one_inode(root, parent_objectid);\n\tif (!dir) {\n\t\tret = -ENOENT;\n\t\tgoto out;\n\t}\n\n\tinode = read_one_inode(root, inode_objectid);\n\tif (!inode) {\n\t\tret = -EIO;\n\t\tgoto out;\n\t}\n\nthen \"name.name\" would be freed on \"out\" before being initialized.\n\nout:\n\t...\n\tkfree(name.name);\n\nThis issue was reported by Coverity with CID 1526744."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: se corrige la liberaci\u00f3n de un puntero no inicializado en add_inode_ref() La funci\u00f3n add_inode_ref() no inicializa la estructura \"name\" cuando se declara. Si alguna de las siguientes llamadas a \"read_one_inode() devuelve NULL, dir = read_one_inode(root, parent_objectid); if (!dir) { ret = -ENOENT; goto out; } inode = read_one_inode(root, inode_objectid); if (!inode) { ret = -EIO; goto out; } entonces \"name.name\" se liberar\u00eda en \"out\" antes de inicializarse. out: ... kfree(name.name); Este problema fue informado por Coverity con CID 1526744."}], "id": "CVE-2024-50088", "lastModified": "2026-06-17T08:03:33.250", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-50088", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T20:23:09.128991Z", "version": "2.0.3"}}]}, "published": "2024-10-29T01:15:05.640", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/12cf028381aa19bc38465341512c280256e8d82d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a941f3d5b1469c60a7e70e775584f110b47e0d16"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e11ce03b58743bf1e096c48fcaa7e6f08eb75dfa"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-824"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-824"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix uninitialized pointer free in add_inode_ref()", "id": "2322321", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2322321"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: fix uninitialized pointer free in add_inode_ref()\nThe add_inode_ref() function does not initialize the \"name\" struct when\nit is declared. If any of the following calls to \"read_one_inode()\nreturns NULL,\ndir = read_one_inode(root, parent_objectid);\nif (!dir) {\nret = -ENOENT;\ngoto out;\n}\ninode = read_one_inode(root, inode_objectid);\nif (!inode) {\nret = -EIO;\ngoto out;\n}\nthen \"name.name\" would be freed on \"out\" before being initialized.\nout:\n...\nkfree(name.name);\nThis issue was reported by Coverity with CID 1526744."], "name": "CVE-2024-50088", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50088\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50088\nhttps://lore.kernel.org/linux-cve-announce/2024102938-CVE-2024-50088-848b@gregkh/T"], "threat_severity": "Moderate"}

{}