{"id":"CVE-2013-4247","aliases":["DEBIAN-CVE-2013-4247","EUVD-2013-4151","GHSA-cf8v-r742-2v78","UBUNTU-CVE-2013-4247"],"status":"published","title":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel...","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03644,"percentile":0.89658,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189"],"published":"2013-08-14T00:00:00Z","modified":"2026-09-01T20:03:17Z","fixes":[{"ecosystem":"Debian:12","package":"linux","fixed_in":["3.9.6-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"linux","fixed_in":["3.9.6-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["3.9.6-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.9.6-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.9.6-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.9.6-1"}]}]}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","Third Party Advisory","advisory","evidence","fix"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=998401","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Third Party Advisory","advisory","report"]},{"url":"http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2013/08/14/10","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1fc29bacedeabb278080e31bb9c1ecb49f143c3b","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4247"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1fc29bacedeabb278080e31bb9c1ecb49f143c3b"},{"url":"https://github.com/advisories/GHSA-cf8v-r742-2v78"},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-4247","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2013-4247","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2013/08/14","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-1936-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-1919-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-4247","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2013-4247","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"published","published":"2013-08-25T01:00:00Z","modified":"2024-08-06T16:38:01.552Z","updated_at":"2026-11-02T14:34:58.193873Z"}],"euvd":[{"id":"EUVD-2013-4151","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"published","published":"2013-08-25T01:00:00Z","modified":"2024-08-06T16:38:01Z","updated_at":"2026-11-03T01:56:32.70868Z"}],"ghsa":[{"id":"GHSA-cf8v-r742-2v78","title":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel...","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"published","published":"2022-05-17T05:05:44Z","modified":"2023-02-13T06:32:04Z","updated_at":"2026-11-02T14:54:06.501947Z"}],"nvd":[{"id":"CVE-2013-4247","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"published","published":"2013-08-25T03:27:32.96Z","modified":"2026-06-16T23:56:53.307Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:02:35.248411Z"}],"osv":[{"id":"CVE-2013-4247","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"published","published":"2013-08-25T03:27:32Z","modified":"2026-04-10T03:42:55.789862Z","updated_at":"2026-11-02T15:43:59.09154Z"},{"id":"DEBIAN-CVE-2013-4247","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"published","published":"2013-08-25T03:27:32.96Z","modified":"2026-09-01T20:03:17.695307295Z","updated_at":"2026-11-02T15:45:25.514579Z"},{"id":"UBUNTU-CVE-2013-4247","description":"Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.","status":"withdrawn","published":"2013-08-14T00:00:00Z","modified":"2026-02-04T04:29:15.358177Z","updated_at":"2026-11-02T15:54:07.421078Z"}]}}