CVE-2022-2639: linux linux_kernel Integer Coercion Error
Vulnerability summary
CVE-2022-2639 is a high (CVSS 7.8) Integer Coercion Error vulnerability in linux linux_kernel. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 60.3% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 28 · Related 16Timeline
- 01-09-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
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 metrics
5 scores · 4 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.92%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.92% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundLinux
Maturity: poc
Weaknesses
CWE · root cause- CWE-192Integer Coercion ErrorInteger coercion refers to a set of flaws pertaining to the type casting, extension, or truncation of primitive data types.
- CWE-681Incorrect Conversion between Numeric TypesWhen converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu79 products
- linuxAll versions (No fix recorded) | < 4.4.0-234.268 | < 4.15.0-189.200 | < 5.4.0-122.138 | < 5.15.0-41.44
- linux-aws< 4.4.0-1113.119 | < 4.4.0-1151.166 | < 4.15.0-1137.148 | < 5.4.0-1081.88 | < 5.15.0-1015.19
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
Redhat78 products
- enterprise_linux8.0 | 9.0
- bpftool< 0:4.18.0-305.72.1.el8_4 | < 0:4.18.0-147.78.1.el8_1
- bpftool-debuginfo< 0:4.18.0-305.72.1.el8_4 | < 0:4.18.0-147.78.1.el8_1
- kernel< 0:4.18.0-305.72.1.el8_4 | < 0:4.18.0-147.78.1.el8_1
- kernel-abi-stablelists< 0:4.18.0-305.72.1.el8_4
Debian1 product
- linux< 5.17.6-1
Linux1 product
- linux_kernel≥ 3.18.139, < 3.19 | ≥ 4.4.179, < 4.5 | ≥ 4.9.169, < 4.9.312 | ≥ 4.14.112, < 4.14.277 | ≥ 4.19.35, < 4.19.240 | ≥ 5.0.8, < 5.4.191 | ≥ 5.5, < 5.10.113 | ≥ 5.11, < 5.15.36 | ≥ 5.16, < 5.17.5
4 vendors · 159 products
References
20 links- bugzilla.redhat.com/show_bug.cgi?id=2084479X Refsource MISCREPORTIssue TrackingPatchThird Party Advisory
- github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90f8X Refsource MISCExploitPatch
