CVE-2019-6454
MEDIUM5.5EPSS 0.14%systemd - security update
Published: 3/21/2019Modified: 4/28/2026
Description
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
Affected packages (3)
- Debian/systemdfrom 0, < 240-6
- Debian/systemdfrom 0, < 215-17+deb8u10
- Debian/systemdfrom 0, < 232-25+deb9u9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |