Vulnerability in Linux Kernel
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 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.
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: 0.009 (59.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Linux Kernel
- Red Hat Enterprise Linux — versions 8.0, 9.0
- Kernel — versions kernel 5.18
Weakness classification (CWE)
Public proof-of-concept exploits
- bb33bb/CVE-2022-2639-PipeVersion
- devetop/CVE-2022-2639-PipeVersion
- letsr00t/-2022-LOCALROOT-CVE-2022-2639
- EkamSinghWalia/Detection-and-Mitigation-for-CVE-2022-2639
- HaxorSecInfec/autoroot.sh
- J1ezds/Vulnerability-Wiki-page
- JlSakuya/Linux-Privilege-Escalation-Exploits
- KayCHENvip/vulnerability-poc
- Miraitowa70/POC-Notes
- Mr-xn/Penetration_
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90f8 (Exploit, Patch)
Frequently asked questions
- What is CVE-2022-2639?
- CVE-2022-2639 is a high-severity vulnerability in Linux Kernel, classified under CWE-192. CVSS score: 7.8/10. Published 2022-09-01.
- How severe is CVE-2022-2639?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-2639 known to be exploited?
- 39 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.