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Description

A flaw was found in the asynchronous message queue handling of the libsoup library, widely used by GNOME and WebKit-based applications to manage HTTP/2 communications. When network operations are aborted at specific timing intervals, an internal message queue item may be freed twice due to missing state synchronization. This leads to a use-after-free memory access, potentially crashing the affected application. Attackers could exploit this behavior remotely by triggering specific HTTP/2 read and cancel sequences, resulting in a denial-of-service condition.

PUBLISHED Reserved 2025-10-23 | Published 2025-10-23 | Updated 2025-12-11 | Assigner redhat




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Use After Free

Product status

Default status
affected

0:3.6.5-3.el10_1.7 (rpm) before *
unaffected

Default status
unknown

Default status
unaffected

Default status
unaffected

Default status
unaffected

Timeline

2025-10-23:Reported to Red Hat.
2025-10-23:Made public.

Credits

Red Hat would like to thank Eugene Mutavchi for reporting this issue.

References

access.redhat.com/errata/RHSA-2025:23139 (RHSA-2025:23139) vendor-advisory

access.redhat.com/security/cve/CVE-2025-12105 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2405992 (RHBZ#2405992) issue-tracking

cve.org (CVE-2025-12105)

nvd.nist.gov (CVE-2025-12105)

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