Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.18.139, < 3.19 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2084479Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90fExploitPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=2084479Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90fExploitPatch
FAQ
What is CVE-2022-2639?
CVE-2022-2639 is a vulnerability with a CVSS score of 7.8 (HIGH). 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_s...
How severe is CVE-2022-2639?
CVE-2022-2639 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-2639?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux.