| Name | CVE-2021-35939 |
| Description | It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 990543 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| rpm (PTS) | buster | 4.14.2.1+dfsg1-1 | vulnerable |
| bullseye | 4.16.1.2+dfsg1-3 | vulnerable |
| bookworm | 4.18.0+dfsg-1+deb12u1 | fixed |
| trixie | 4.18.2+dfsg-2 | fixed |
| sid | 4.18.2+dfsg-2.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| rpm | source | (unstable) | 4.18.0+dfsg-1 | | | 990543 |
Notes
[bullseye] - rpm <ignored> (Minor issue)
[buster] - rpm <ignored> (Minor issue)
[stretch] - rpm <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=1964129
https://github.com/rpm-software-management/rpm/pull/1919
https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556