CVE-2021-33910
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Systemd
PublishedJul 20, 2021
First seenJul 20, 2021
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- systemd_project systemd246.15, 247.8, 248.5, 249.1 or later
Vendor advisories
- security.gentoo.org/glsa/202107-48
- debian.org/security/2021/dsa-4942
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2LSDMHAKI4LGFOCSPXNVVSEWQFAVFWR7/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| systemd_project systemd | v < 246.15, 247 ≤ v < 247.8, 248 ≤ v < 248.5, 249 ≤ v < 249.1 | 246.15, 247.8, 248.5, 249.1 |
| fedoraproject fedora | 33, 34 | — |
| debian debian_linux | 10.0 | — |
| netapp hci_management_node | No range specified | — |
| netapp solidfire | No range specified | — |
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