Total vulnerabilities in the database
systemd 250 and 251 allows local users to achieve a systemd-coredump deadlock by triggering a crash that has a long backtrace. This occurs in parse_elf_object in shared/elf-util.c. The exploitation methodology is to crash a binary calling the same function recursively, and put it in a deeply nested directory to make its backtrace large enough to cause the deadlock. This must be done 16 times when MaxConnections=16 is set for the systemd/units/systemd-coredump.socket file.
| Software | From | Fixed in |
|---|---|---|
| systemd_project / systemd | 250 | 251.x |
| systemd_project / systemd | 252-rc1 | 252-rc1.x |
| systemd_project / systemd | 252-rc2 | 252-rc2.x |
| fedoraproject / fedora | 36 | 36.x |