{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49541", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.589Z", "datePublished": "2025-02-26T02:13:56.496Z", "dateUpdated": "2026-08-05T08:55:31.111Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:55:31.111Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix potential double free during failed mount\n\nRHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=2088799" } ], "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 vulnerability is reached through the local mount path (mount syscall → smb3_get_tree → cifs_smb3_do_mount) or via local DFS automount path walking, not by processing unsolicited remote packets.\nAC:L - An attacker can reliably force the failing mount paths (e.g. controlled SMB target or crafted prefixpath causing cifs_get_root/cifs_read_super failure); the double-free fall-through is deterministic once hit, not dependent on uncontrolled conditions.\nPR:L - Although cifs lacks FS_USERNS_MOUNT so a direct mount needs CAP_SYS_ADMIN, unprivileged users can still reach cifs_smb3_do_mount via DFS automount (vfs_submount) on an already-mounted share, and CIFS mounts are commonly invoked by unprivileged users through mount helpers.\nUI:N - The attacker initiates the mount or DFS path access themselves; no separate victim interaction is required.\nS:U - This is standard in-kernel heap corruption within the host kernel's security authority, with no VM/IOMMU/sandbox boundary crossing.\nC:H - A double free of cifs_sb/ctx is heap memory corruption that enables object reuse and arbitrary kernel read primitives.\nI:H - Double free enables heap spraying and corruption of adjacent slab objects, providing write/control-flow hijacking primitives suitable for privilege escalation.\nA:H - The double free produces a use-after-free that can crash the kernel (KASAN UAF/oops), yielding high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/cifs/cifsfs.c" ], "versions": [ { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "lessThan": "ce0008a0e410cdd95f0d8cd81b2902ec10a660c4", "status": "affected", "versionType": "git" }, { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "lessThan": "9a167fc440e5693c1cdd7f07071e05658bd9d89d", "status": "affected", "versionType": "git" }, { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "lessThan": "ee71f8f1cd3c8c4a251fd3e8abc89215ae3457cb", "status": "affected", "versionType": "git" }, { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "lessThan": "8378a51e3f8140f60901fb27208cc7a6e47047b5", "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/cifs/cifsfs.c" ], "versions": [ { "version": "5.11", "status": "affected" }, { "version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "5.11", "versionEndExcluding": "5.15.46" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.17.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ce0008a0e410cdd95f0d8cd81b2902ec10a660c4" }, { "url": "https://git.kernel.org/stable/c/9a167fc440e5693c1cdd7f07071e05658bd9d89d" }, { "url": "https://git.kernel.org/stable/c/ee71f8f1cd3c8c4a251fd3e8abc89215ae3457cb" }, { "url": "https://git.kernel.org/stable/c/8378a51e3f8140f60901fb27208cc7a6e47047b5" } ], "title": "cifs: fix potential double free during failed mount", "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-2022-49541", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:37:38.834933Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-415", "description": "CWE-415 Double Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:46:40.187Z" } } ] } }