{"id":"CVE-2011-4126","aliases":["DEBIAN-CVE-2011-4126","EUVD-2011-4074","GHSA-m85p-c5xr-7h82"],"status":"published","title":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged...","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01539,"percentile":0.75068,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-367"],"published":"2021-10-27T00:50:15Z","modified":"2026-10-23T18:02:48Z","fixes":[{"ecosystem":"Debian:12","package":"calibre","fixed_in":["1.5.0+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"calibre","fixed_in":["1.5.0+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"calibre","fixed_in":["1.5.0+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"calibre","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"calibre","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"calibre","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0+dfsg-1"}]}]}],"products":[{"vendor":"calibre-ebook","product":"calibre"},{"vendor":"kovidgoyal","product":"calibre"}],"references":[{"url":"https://git.zx2c4.com/calibre-mount-helper-exploit/about/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","advisory","evidence"]},{"url":"https://www.openwall.com/lists/oss-security/2011/11/02/2","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"https://bugs.launchpad.net/calibre/+bug/885027","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","advisory","evidence","report"]},{"url":"https://lwn.net/Articles/464824/","tags":["x_refsource_MISC","x_transferred","Not Applicable","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4126"},{"url":"https://github.com/advisories/GHSA-m85p-c5xr-7h82"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-4126","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-4126","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","status":"published","published":"2021-10-27T00:50:15Z","modified":"2024-08-07T00:01:50.489Z","cwes":["CWE-367"],"updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4074","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","status":"published","published":"2021-10-27T00:50:15Z","modified":"2024-08-07T00:01:50Z","updated_at":"2026-11-03T01:39:49.441333Z"}],"ghsa":[{"id":"GHSA-m85p-c5xr-7h82","title":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged...","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","status":"published","published":"2022-04-22T00:24:29Z","modified":"2023-01-27T05:02:10Z","cwes":["CWE-367"],"updated_at":"2026-11-02T14:42:02.011098Z"}],"nvd":[{"id":"CVE-2011-4126","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","status":"published","published":"2021-10-27T01:15:07.003Z","modified":"2026-06-16T23:34:28.37Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:02:12.945371Z"}],"osv":[{"id":"CVE-2011-4126","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","status":"published","published":"2021-10-27T01:15:07Z","modified":"2026-04-10T03:42:03.047723Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-4126","description":"Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.","status":"published","published":"2021-10-27T01:15:07.003Z","modified":"2026-10-23T18:02:48.533340726Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:24.612044Z"}]}}