CVE-2011-4126 json
Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to…
published 2021-10-27 5 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4074
- cvss
- 8.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.
Patch / fix
- calibre Debian 14, Debian 13, Debian 12 1.5.0+dfsg-1
debian advisories DEBIAN-CVE-2011-4126
Exploit prediction
1.54% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- git.zx2c4.com https://git.zx2c4.com/calibre-mount-helper-exploit/about/ referenced PoC, tagged "exploit" by a source, unverified
- bugs.launchpad.net https://bugs.launchpad.net/calibre/+bug/885027 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- n/a Calibre
Classification
- Weakness
-
- CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
References
-
git.zx2c4.com
/calibre-mount-helper-exploit/about/
exploit, third-party-advisory
-
bugs.launchpad.net
/calibre/+bug/885027
exploit, issue-tracking, third-party-advisory
-
openwall.com
/lists/oss-security/2011/11/02/2
mailing-list, third-party-advisory
-
lwn.net
/Articles/464824/
not-applicable, third-party-advisory
Sources
- CVE List CVE-2011-4126
- NVD CVE-2011-4126
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.