CVE-2023-43786

Libx11: stack exhaustion from infinite recursion in putsubimage()

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.

Affected

Red Hat · libXpm · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 9 · Red Hat Enterprise Linux 6 · Red Hat Enterprise Linux 7

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 REDHAT

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.47% chance of exploitation in the next 30 days, 40th percentile

Published

2023-10-10

Updated

2025-11-06

Proof-of-concept exploits (1)

• jfrog/jfrog-CVE-2023-43786-libX11_DoS0★ · 2024-01-17

Security advisories

• https://access.redhat.com/security/cve/CVE-2023-43786
• https://bugzilla.redhat.com/show_bug.cgi?id=2242253

References

• CVE Record
• NVD entry

Related

• CVE-2022-21449
• CVE-2022-24675
• CVE-2022-29799
• CVE-2022-29800
• CVE-2023-25136
• CVE-2024-27132