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CVE-2022-2663
An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message.…
Medium5.3EPSS 4.1%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 4.1% · top 9.3% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
Linux kernel
- affected unknown
References (9)
- https://www.openwall.com/lists/oss-security/2022/08/30/1 (opens in a new tab)x_transferred
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/ (opens in a new tab)x_transferred
- [debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update (opens in a new tab)mailing-listx_transferred
- https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663 (opens in a new tab)x_transferred
- https://www.youtube.com/watch?v=WIq-YgQuYCA (opens in a new tab)x_transferred
- DSA-5257 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update (opens in a new tab)mailing-listx_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-2663)Record last updated .