CVE-2022-49274

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49274", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.297Z", "datePublished": "2025-02-26T01:56:19.586Z", "dateUpdated": "2026-08-05T08:54:31.739Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:54:31.739Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix crash when mount with quota enabled\n\nThere is a reported crash when mounting ocfs2 with quota enabled.\n\n RIP: 0010:ocfs2_qinfo_lock_res_init+0x44/0x50 [ocfs2]\n Call Trace:\n ocfs2_local_read_info+0xb9/0x6f0 [ocfs2]\n dquot_load_quota_sb+0x216/0x470\n dquot_load_quota_inode+0x85/0x100\n ocfs2_enable_quotas+0xa0/0x1c0 [ocfs2]\n ocfs2_fill_super.cold+0xc8/0x1bf [ocfs2]\n mount_bdev+0x185/0x1b0\n legacy_get_tree+0x27/0x40\n vfs_get_tree+0x25/0xb0\n path_mount+0x465/0xac0\n __x64_sys_mount+0x103/0x140\n\nIt is caused by when initializing dqi_gqlock, the corresponding dqi_type\nand dqi_sb are not properly initialized.\n\nThis issue is introduced by commit 6c85c2c72819, which wants to avoid\naccessing uninitialized variables in error cases. So make global quota\ninfo properly initialized."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only via the local mount path (mount \u2192 ocfs2_fill_super \u2192 ocfs2_enable_quotas \u2192 ocfs2_local_read_info); ocfs2 lacks a network-facing packet handler that triggers this code.\nAC:L - Mounting any ocfs2 volume with the on-disk usrquota/grpquota RO_COMPAT features enabled reliably hits ocfs2_qinfo_lock_res_init with uninitialized dqi_gi fields; no race or attacker-uncontrollable condition is required.\nPR:N - An unprivileged attacker can supply a quota-enabled ocfs2 image (e.g., via mkfs.ocfs2 on a file) without credentials on the target; ocfs2 is not FS_USERNS_MOUNT, so the privileged mount itself is performed by the victim.\nUI:R - Exploitation requires a user/administrator to mount (or remount RW) the attacker-supplied or quota-enabled ocfs2 filesystem to reach ocfs2_enable_quotas.\nS:U - Impact is confined to the host kernel's own privilege boundary (oops or memory corruption in-kernel); there is no VM/IOMMU/sandbox escape.\nC:H - kmalloc'd ocfs2_mem_dqinfo leaves dqi_gi.dqi_sb uninitialized, so OCFS2_SB() dereferences attacker-influencable heap contents; with local heap grooming this yields a controlled read-through of kernel memory, and when uncertain the higher impact is required.\nI:H - The same uninitialized super_block pointer flows into ocfs2_lock_res_init_common \u2192 ocfs2_add_lockres_tracking \u2192 list_add on osb->osb_dlm_debug, giving a write primitive if the pointer is groomed, so integrity impact is High.\nA:H - The reported and expected outcome is a kernel oops in ocfs2_qinfo_lock_res_init when the garbage pointer is unmapped, which is a full availability loss."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/quota_global.c", "fs/ocfs2/quota_local.c"], "versions": [{"version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "lessThan": "7c5312fdb1dcfdc1951b018669af88d5d6420b31", "status": "affected", "versionType": "git"}, {"version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "lessThan": "01931e1c4e3de5d777253acae64c0e8fd071a1dd", "status": "affected", "versionType": "git"}, {"version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "lessThan": "eda31f77317647b9fbf889779ee1fb6907651865", "status": "affected", "versionType": "git"}, {"version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "lessThan": "de19433423c7bedabbd4f9a25f7dbc62c5e78921", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/quota_global.c", "fs/ocfs2/quota_local.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.33", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.19", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.2", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18", "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": "5.15", "versionEndExcluding": "5.15.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.16.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.17.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7c5312fdb1dcfdc1951b018669af88d5d6420b31"}, {"url": "https://git.kernel.org/stable/c/01931e1c4e3de5d777253acae64c0e8fd071a1dd"}, {"url": "https://git.kernel.org/stable/c/eda31f77317647b9fbf889779ee1fb6907651865"}, {"url": "https://git.kernel.org/stable/c/de19433423c7bedabbd4f9a25f7dbc62c5e78921"}], "title": "ocfs2: fix crash when mount with quota enabled", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ocfs2/quota_global.c", "fs/ocfs2/quota_local.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7c5312fdb1dcfdc1951b018669af88d5d6420b31", "status": "affected", "version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "versionType": "git"}, {"lessThan": "01931e1c4e3de5d777253acae64c0e8fd071a1dd", "status": "affected", "version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "versionType": "git"}, {"lessThan": "eda31f77317647b9fbf889779ee1fb6907651865", "status": "affected", "version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "versionType": "git"}, {"lessThan": "de19433423c7bedabbd4f9a25f7dbc62c5e78921", "status": "affected", "version": "6c85c2c728193d19d6a908ae9fb312d0325e65ca", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ocfs2/quota_global.c", "fs/ocfs2/quota_local.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.33", "versionType": "semver"}, {"lessThanOrEqual": "5.16.*", "status": "unaffected", "version": "5.16.19", "versionType": "semver"}, {"lessThanOrEqual": "5.17.*", "status": "unaffected", "version": "5.17.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A2DC15C6-2357-4732-97E0-A8A511BB24BF", "versionEndExcluding": "5.15.33", "versionStartIncluding": "5.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20C43679-0439-405A-B97F-685BEE50613B", "versionEndExcluding": "5.16.19", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "210C679C-CF84-44A3-8939-E629C87E54BF", "versionEndExcluding": "5.17.2", "versionStartIncluding": "5.17", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix crash when mount with quota enabled\n\nThere is a reported crash when mounting ocfs2 with quota enabled.\n\n RIP: 0010:ocfs2_qinfo_lock_res_init+0x44/0x50 [ocfs2]\n Call Trace:\n ocfs2_local_read_info+0xb9/0x6f0 [ocfs2]\n dquot_load_quota_sb+0x216/0x470\n dquot_load_quota_inode+0x85/0x100\n ocfs2_enable_quotas+0xa0/0x1c0 [ocfs2]\n ocfs2_fill_super.cold+0xc8/0x1bf [ocfs2]\n mount_bdev+0x185/0x1b0\n legacy_get_tree+0x27/0x40\n vfs_get_tree+0x25/0xb0\n path_mount+0x465/0xac0\n __x64_sys_mount+0x103/0x140\n\nIt is caused by when initializing dqi_gqlock, the corresponding dqi_type\nand dqi_sb are not properly initialized.\n\nThis issue is introduced by commit 6c85c2c72819, which wants to avoid\naccessing uninitialized variables in error cases. So make global quota\ninfo properly initialized."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ocfs2: se corrige un fallo al montar con la cuota habilitada Se ha informado de un fallo al montar ocfs2 con la cuota habilitada. RIP: 0010:ocfs2_qinfo_lock_res_init+0x44/0x50 [ocfs2] Seguimiento de llamadas: ocfs2_local_read_info+0xb9/0x6f0 [ocfs2] dquot_load_quota_sb+0x216/0x470 dquot_load_quota_inode+0x85/0x100 ocfs2_enable_quotas+0xa0/0x1c0 [ocfs2] ocfs2_fill_super.cold+0xc8/0x1bf [ocfs2] mount_bdev+0x185/0x1b0 legacy_get_tree+0x27/0x40 vfs_get_tree+0x25/0xb0 path_mount+0x465/0xac0 __x64_sys_mount+0x103/0x140 Esto se debe a que, al inicializar dqi_gqlock, los dqi_type y dqi_sb correspondientes no se inicializan correctamente. Este problema lo introduce el commit 6c85c2c72819, que quiere evitar el acceso a variables no inicializadas en casos de error. Por lo tanto, haga que la informaci\u00f3n de cuota global se inicialice correctamente."}], "id": "CVE-2022-49274", "lastModified": "2026-08-04T10:17:42.290", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T07:01:04.280", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/01931e1c4e3de5d777253acae64c0e8fd071a1dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7c5312fdb1dcfdc1951b018669af88d5d6420b31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/de19433423c7bedabbd4f9a25f7dbc62c5e78921"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eda31f77317647b9fbf889779ee1fb6907651865"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ocfs2: fix crash when mount with quota enabled", "id": "2348102", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348102"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nocfs2: fix crash when mount with quota enabled\nThere is a reported crash when mounting ocfs2 with quota enabled.\nRIP: 0010:ocfs2_qinfo_lock_res_init+0x44/0x50 [ocfs2]\nCall Trace:\nocfs2_local_read_info+0xb9/0x6f0 [ocfs2]\ndquot_load_quota_sb+0x216/0x470\ndquot_load_quota_inode+0x85/0x100\nocfs2_enable_quotas+0xa0/0x1c0 [ocfs2]\nocfs2_fill_super.cold+0xc8/0x1bf [ocfs2]\nmount_bdev+0x185/0x1b0\nlegacy_get_tree+0x27/0x40\nvfs_get_tree+0x25/0xb0\npath_mount+0x465/0xac0\n__x64_sys_mount+0x103/0x140\nIt is caused by when initializing dqi_gqlock, the corresponding dqi_type\nand dqi_sb are not properly initialized.\nThis issue is introduced by commit 6c85c2c72819, which wants to avoid\naccessing uninitialized variables in error cases. So make global quota\ninfo properly initialized."], "name": "CVE-2022-49274", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49274\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49274\nhttps://lore.kernel.org/linux-cve-announce/2025022630-CVE-2022-49274-9f33@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T15:42:39.082804+00:00", "updated": "2025-07-12T15:42:39.082855+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}