Buffer overflow in Linux Kernel
CVE-2022-2991
A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. This vulnerability allows a local attacker to escalate privileges and execute arbitrary code in the context of the kernel. The attacker must first obtain the ability to execute high-privileged code on the target system to exploit this vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.5% 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 Fixed in kernel 5.15-rc1
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-22-960/ (VDB Entry, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/lightnv… (Patch, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-2991?
- CVE-2022-2991 is a medium-severity vulnerability in Linux Kernel, classified under Heap-based Buffer Overflow. CVSS score: 6.7/10. Published 2022-08-25.
- How severe is CVE-2022-2991?
- Medium severity. CVSS v3 base score is 6.7 out of 10.