Description
Integer overflow in the valid_user_field function in journal/journald-native.c in systemd allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large journal data field, which triggers a heap-based buffer overflow.
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 | systemd | 204-5 | — |
| Debian 13 | systemd | 204-5 | — |
| Debian 12 | systemd | 204-5 | — |
| Debian 7 | systemd | 44-11+deb7u4 | DSA-2777-1 |
Advisories 1
- DSA-2777-1 systemd - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=859051
- GLSA-201612-34 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=725357
- DSA-2777 vendor-advisory
- [oss-security] 20131001 Re: [CVE request] systemd mailing-list
- http://cgit.freedesktop.org/systemd/systemd/commit/?id=505b6a61c22d5565e9308045c7b9bf79f7d0517e