Description
pam_mount 0.10 through 0.45, when luserconf is enabled, does not verify mountpoint and source ownership before mounting a user-defined volume, which allows local users to bypass intended access restrictions via a local mount.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libpam-mount | 0.48-1 | — |
| Debian 13 | libpam-mount | 0.48-1 | — |
| Debian 12 | libpam-mount | 0.48-1 | — |
| Debian 5.0 | libpam-mount | 0.44-1+lenny1 | DTSA-169-1 |
Advisories 1
- DTSA-169-1 libpam-mount - access restriction bypass Debian Security (DSA / DLA) · Mar 9, 2026
References
- [pam-mount-user] 20080905 pam_mount 0.47 released mailing-list
- [oss-security] 20080906 CVE request: pam_mount < 0.47 missing security checks mailing-list
- pammount-luserconf-privilege-escalation(44960) vdb-entry
- MDVSA-2008:208 vendor-advisory
- http://sourceforge.net/project/shownotes.php?release_id=624240
- [oss-security] 20080909 Re: CVE request: pam_mount < 0.47 missing security checks mailing-list
- 31041 vdb-entry
- http://dev.medozas.de/gitweb.cgi?p=pam_mount%3Ba=commitdiff%3Bh=33b91d7659ae3aa78b1e94fd3f8e545ae5ff25db
- SUSE-SR:2008:019 vendor-advisory