OSV-2022-472 Heap-double-free in nft_set_context_free_many
A heap double-free vulnerability in the Linux kernel's netfilter subsystem allows local attackers to cause a denial of service or potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2022-472?
OSV-2022-472 is an use after free vulnerability in systemd, published on 12 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47963
Crash type: Heap-double-free
Crash state:
nft_set_context_free_many
config_parse_nft_set_context
config_parse_dhcp_pd_nft_set_context
Which versions are affected by OSV-2022-472?
1 open source package ship an affected version, including systemd.
| Package | Affected | Fixed in |
|---|---|---|
systemd OSS-Fuzz | All versions | None |
How do I fix OSV-2022-472?
No fix has been published for OSV-2022-472 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2022-472 being exploited?
There is no known exploitation of OSV-2022-472 in the wild and no public exploit code.