No exploitation reportedFix available

CVE-2022-1012

Q: Is CVE-2022-1012 actively exploited?

Active exploitation of CVE-2022-1012 has not been confirmed. Its EPSS score was 4.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-1012?

CVE-2022-1012 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

No exploitation reported by the sources we read.

Published2022-08-05
Fixed in5.18
WeaknessCWE-401

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.

Timeline

dates in UTC

2022-08-0516:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-1012?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-1012?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Linux linux kernel

Branch	Affected	Fixed in	Source
5.18	< 5.18	5.18	NVD
5.18	= 5.18	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

kernelAlmaLinux:9all versions · fixed in 5.14.0-70.17.1.el9_0and 27 other packages
kernelAlmaLinux:8all versions · fixed in 4.18.0-372.19.1.el8_6and 19 other packages
kernel-rtAlmaLinux:9all versions · fixed in 5.14.0-70.17.1.rt21.89.el9_0and 11 other packages
kernel-rtAlmaLinux:8all versions · fixed in 4.18.0-372.19.1.rt7.176.el8_6and 11 other packages

Full record on NVD

Fix

Update Linux linux kernel to 5.18

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.2read 2026-10-23
CNAweakness (CWE)CWE-401read 2026-10-23
NVDweakness (CWE)CWE-401read 2026-10-23
FIRST EPSSEPSS score4.4 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Published: 2022-08-05
Last Modified: 2026-10-14
NVD status: Modified

Frequently asked questions

What is CVE-2022-1012?

Is CVE-2022-1012 actively exploited?

Active exploitation of CVE-2022-1012 has not been confirmed. Its EPSS score was 4.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-1012?

CVE-2022-1012 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

Running Linux kernel? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database