vulnerability
Oracle Linux: CVE-2021-33910: ELSA-2021-2717: systemd security update (IMPORTANT)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:N/I:N/A:C) | Jul 20, 2021 | Jul 22, 2021 | Dec 3, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
Jul 20, 2021
Added
Jul 22, 2021
Modified
Dec 3, 2025
Description
basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.
A flaw was found in systemd. The use of alloca function with an uncontrolled size in function unit_name_path_escape allows a local attacker, able to mount a filesystem on a very long path, to crash systemd and the whole system by allocating a very large space in the stack. The highest threat from this vulnerability is to the system availability.
A flaw was found in systemd. The use of alloca function with an uncontrolled size in function unit_name_path_escape allows a local attacker, able to mount a filesystem on a very long path, to crash systemd and the whole system by allocating a very large space in the stack. The highest threat from this vulnerability is to the system availability.
Solutions
oracle-linux-upgrade-systemdoracle-linux-upgrade-systemd-containeroracle-linux-upgrade-systemd-develoracle-linux-upgrade-systemd-journal-remoteoracle-linux-upgrade-systemd-libsoracle-linux-upgrade-systemd-pamoracle-linux-upgrade-systemd-testsoracle-linux-upgrade-systemd-udev
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