Use After Free in Linux Kernel
CVE-2022-32250
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2022/05/31/1 (Exploit, Patch, Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter (Patch, Mailing List, Vendor Advisory)
- www.openwall.com/lists/oss-security/2022/06/03/1 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2022/06/04/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- www.debian.org/security/2022/dsa-5161 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2022/06/20/1 (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/07/msg00000.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-32250?
- CVE-2022-32250 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2022-06-02.
- How severe is CVE-2022-32250?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-32250 known to be exploited?
- 65 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.