vulnerability
Ubuntu: USN-7768-1 (CVE-2025-6297): dpkg vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:C/I:P/A:N) | Jul 1, 2025 | Sep 25, 2025 | Sep 26, 2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:C/I:P/A:N)
Published
Jul 1, 2025
Added
Sep 25, 2025
Modified
Sep 26, 2025
Description
It was discovered that dpkg-deb does not properly sanitize directory permissions when extracting a control member into a temporary directory, which is
documented as being a safe operation even on untrusted data. This may result in leaving temporary files behind on cleanup. Given automated and repeated execution of dpkg-deb commands on
adversarial .deb packages or with well compressible files, placed
inside a directory with permissions not allowing removal by a non-root
user, this can end up in a DoS scenario due to causing disk quota
exhaustion or disk full conditions.
Solutions
ubuntu-upgrade-dpkgubuntu-upgrade-libdpkg-perl
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