Buffer overflow in Linux Kernel
CVE-2022-4378
A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.
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: 0.004 (34.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- Kernel — versions kernel 6.0.12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/… (Vendor Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/… (Vendor Advisory)
- seclists.org/oss-sec/2022/q4/178 (Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092…
Frequently asked questions
- What is CVE-2022-4378?
- CVE-2022-4378 is a high-severity vulnerability in Linux Kernel, classified under Incorrect Calculation of Buffer Size. CVSS score: 7.8/10. Published 2023-01-05.
- How severe is CVE-2022-4378?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-4378 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.