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CVE-2022-4283
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory,…
High7.8EPSS 1.1%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.1% · top 35% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
xorg-x11-server
- affected xorg-x11-server-1.20.4
References (7)
- https://bugzilla.redhat.com/show_bug.cgi?id=2151761 (opens in a new tab)x_transferred
- https://access.redhat.com/security/cve/CVE-2022-4283 (opens in a new tab)x_transferred
- FEDORA-2022-c3a65f7c65 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-721a78b7e5 (opens in a new tab)vendor-advisoryx_transferred
- DSA-5304 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-dd3eb7e0a8 (opens in a new tab)vendor-advisoryx_transferred
- https://security.gentoo.org/glsa/202305-30 (opens in a new tab)x_transferred
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)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-4283)Record last updated .