SARA / Free Tools / CVE / CVE-2023-43786

CVE-2023-43786 — A vulnerability was found in libX11 due to an infinite loop within the PutSubIma

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

CVSS
5.5 MEDIUM
EPSS
8.00% (top 75.80%)
CWE
CWE-400
Published
2023-10-10T12:26:07.399Z
Last modified
2025-11-06T22:59:38.283Z
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

01What is this vulnerability?

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

02Affected products

VendorProductVersions
??0
Red HatRed Hat Enterprise Linux 80:1.6.8-8.el8
Red HatRed Hat Enterprise Linux 90:1.7.0-9.el9
Red HatRed Hat Enterprise Linux 6unspecified
Red HatRed Hat Enterprise Linux 7unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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