CVE-2026-31710

{"id": "CVE-2026-31710", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4fc3a433c13944ee5766ec5b9bf6f1eb4d29b880", "lessThan": "fbbfcf35e1ee3396631f3dc6214cb626aa9814c3", "versionType": "git"}, {"status": "affected", "version": "4fc3a433c13944ee5766ec5b9bf6f1eb4d29b880", "lessThan": "c4d3fc5844d685441befd0caaab648321013cdfd", "versionType": "git"}], "programFiles": ["fs/smb/client/connect.c", "fs/smb/client/smb1ops.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"status": "unaffected", "version": "0", "lessThan": "7.0", "versionType": "semver"}, {"status": "unaffected", "version": "7.0.2", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/smb/client/connect.c", "fs/smb/client/smb1ops.c"], "defaultStatus": "affected"}]}], "published": "2026-05-01T14:16:21.040", "references": [{"url": "https://git.kernel.org/stable/c/c4d3fc5844d685441befd0caaab648321013cdfd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fbbfcf35e1ee3396631f3dc6214cb626aa9814c3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix dir separator in SMB1 UNIX mounts\n\nWhen calling cifs_mount_get_tcon() with SMB1 UNIX mounts,\n@cifs_sb->mnt_cifs_flags needs to be read or updated only after\ncalling reset_cifs_unix_caps(), otherwise it might end up with missing\nCIFS_MOUNT_POSIXACL and CIFS_MOUNT_POSIX_PATHS bits.\n\nThis fixes the wrong dir separator used in paths caused by the missing\nCIFS_MOUNT_POSIX_PATHS bit in cifs_sb_info::mnt_cifs_flags."}], "lastModified": "2026-06-17T10:34:17.243", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "892296EC-C52B-40F8-9C2B-E023C2B6B4C6", "versionEndExcluding": "7.0.2", "versionStartIncluding": "7.0.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EF897730-3F1E-47A2-8B07-22535202C487"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}