Vulnerability in Linux Kernel
CVE-2021-46283
nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel before 5.12.13 allows local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13 (Release Notes, Vendor Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- syzkaller.appspot.com/bug (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-46283?
- CVE-2021-46283 is a medium-severity vulnerability in Linux Kernel, classified under Improper Initialization. CVSS score: 5.5/10. Published 2022-01-11.
- How severe is CVE-2021-46283?
- Medium severity. CVSS v3 base score is 5.5 out of 10.