Skip to content
Fencer Vulns
medium 6.7

CVE-2022-2991 json

A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem.

published 2022-08-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-35209

cvss
6.7
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux linux_kernel 5.15
  • linux Debian 14, Debian 13, Debian 12 5.15.3-1

debian advisories DEBIAN-CVE-2022-2991

  • linux Ubuntu 18.04 LTS 4.15.0-191.202
  • linux Ubuntu 20.04 LTS 5.4.0-122.138
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1139.150
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1081.88
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1084.92
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1078.84
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1029.33
  • linux-iot Ubuntu 20.04 LTS 5.4.0-1004.6

ubuntu advisories UBUNTU-CVE-2022-2991

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-syms SLES 12 SP4-LTSS, SLES 12 SP4-ESPOS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.120.4
  • kernel-source SLES 12 SP4-LTSS, SLES 12 SP4-ESPOS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.120.4
  • kernel-default SLES 12 SP4-LTSS, SLES 12 SP4-ESPOS, SLE Live Patching 12 SP4 +3 more 4.12.14-95.120.4
  • kernel-default SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE Live Patching 15 SP1 +3 more 4.12.14-150100.197.137.2
  • kernel-vanilla openSUSE Leap 15.4 4.12.14-150100.197.137.2
  • kernel-kvmsmall openSUSE Leap 15.4 4.12.14-150100.197.137.2
  • kernel-zfcpdump SLES 15 SP1-LTSS, openSUSE Leap 15.4 4.12.14-150100.197.137.2
  • kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.150.1

suse advisories SUSE-SU-2025:0834-1SUSE-SU-2023:2023-1SUSE-SU-2023:2007-1SUSE-SU-2023:1983-1SUSE-SU-2023:1973-1SUSE-SU-2023:1971-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-2991 updated cvss 8.2

kernel: heap-based overflow in LightNVM Subsystem may lead to privilege escalation

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a kernel

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.