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CVE-2022-2639

HIGHCVSS 7.8/10EPSS 0.78%

Last modified

CVE-2022-2639 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.78%

51.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 3.18.139, < 3.19
LinuxLinux Kernel>= 4.4.179, < 4.5
LinuxLinux Kernel>= 4.9.169, < 4.9.312
LinuxLinux Kernel>= 4.14.112, < 4.14.277
LinuxLinux Kernel>= 4.19.35, < 4.19.240
LinuxLinux Kernel>= 5.0.8, < 5.4.191
LinuxLinux Kernel>= 5.5, < 5.10.113
LinuxLinux Kernel>= 5.11, < 5.15.36
LinuxLinux Kernel>= 5.16, < 5.17.5
RedhatEnterprise Linux8.0
RedhatEnterprise Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2022-2639?
CVE-2022-2639 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.
How do I fix CVE-2022-2639?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-2639?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST