NULL pointer dereference in Linux Kernel
CVE-2022-4128
A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.
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: 0.002 (14.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Linux Kernel — versions 5.19
- Linux Kernel (Mptcp) — versions Fixed in 5.19
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lore.kernel.org/netdev/20220708233610.410786-2-mathew.j.martineau@linux.intel.c… (Patch, Vendor Advisory)
- github.com/torvalds/linux/commit/5c835bb142d4 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-4128?
- CVE-2022-4128 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-11-28.
- How severe is CVE-2022-4128?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2022-4128 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.