CVE-2022-2639 — Integer Coercion Error in Kernel

CWE-192 — Integer Coercion ErrorCWE-681 — Incorrect Conversion between Numeric TypesCWE-787 — Out-of-bounds Write12 documents10 sources
Severity
7.8HIGHNVD
OSV6.7
EPSS
1.1%
top 21.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Linux KernelRedhat Enterprise LinuxPaloalto Pan-os
Timeline
PublishedSep 1
Latest updateFeb 14

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 vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages5 packages

▶NVDlinux/linux_kernel3.18.139 — 3.19+8
▶Debianlinux/linux_kernel< 5.10.113-1+3
▶Ubuntulinux/linux_kernel< 4.4.0-234.268
▶CVEListV5linux/linux_kernelkernel 5.18
▶Palo Altopaloalto/pan-os

Also affects: Enterprise Linux 8.0, 9.0

Patches

Patch: bugzilla.redhat.com ↗Patch: github.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

4
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-09-30
▶
GHSA
GHSA-w6wh-qr7x-h932: An integer coercion error was found in the openvswitch kernel module↗2022-09-02
▶
CVEList
CVE-2022-2639: An integer coercion error was found in the openvswitch kernel module↗2022-09-01
▶
OSV
CVE-2022-2639: An integer coercion error was found in the openvswitch kernel module↗2022-09-01
▶

📋Vendor Advisories

5
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
CISA ICS
Siemens SCALANCE, RUGGEDCOM Third-Party↗2023-03-16
▶
Ubuntu
Linux kernel vulnerabilities↗2022-09-30
▶
Red Hat
kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()↗2022-04-15
▶
Debian
CVE-2022-2639: linux - An integer coercion error was found in the openvswitch kernel module. Given a su...↗2022
▶

📐Framework References

2
CWE
Integer Coercion Error↗
▶
CWE
Incorrect Conversion between Numeric Types↗
▶
CVE-2022-2639 — Integer Coercion Error in Linux Kernel | cvebase