CVE-2022-2639
An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a...
- Published
- Sep 1, 2022
- Updated
- Aug 3, 2024
- Assigning CNA
- redhat
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 58.2%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Sources
4Shell script to detect and mitigate CVE-2022-2639 in Open vSwitch kernel module. Checks module status, provides remediation steps, and recommends disabling if unused.
- CVE-2022-2639-PipeVersionExploit
Linux kernel local privilege escalation exploit for CVE-2022-2639 using pipe-primitive technique, bypassing KASLR, SMAP, SMEP, and KPTI. Tested on kernels 5.13, 5.4, and 4.18.
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