Description
Off-by-one overflow in the CVS PreservePermissions of rcs.c for CVSD before 1.11.2 allows local users to execute arbitrary code.
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 | cvs | 1:1.11.2 | — |
| Debian 13 | cvs | 1:1.11.2 | — |
| Debian 12 | cvs | 1:1.11.2 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | cvs | 1.11.2-14 | RHSA-2004:004 |
Advisories 1
- RHSA-2004:004 Red Hat Security Advisory: cvs security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- RHSA-2004:004 vendor-advisory
- 20020525 [DER ADV#8] - Local off by one in CVSD mailing-list
- cvs-rcs-offbyone-bo(9175) vdb-entry
- 4829 vdb-entry
- 20020525 [DER ADV#8] - Local off by one in CVSD mailing-list