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Vulnerabilities

Vulnerability · CVE-2025-12105

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.

Published Oct 23, 2025 · catalog updated Jun 29, 2026 · Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

Check if you run it

No confirmed exploitation is on record for CVE-2025-12105. EPSS is 0.46%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.46%
Remediation
Advisory link
Affected products
vendor Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support patch: 0:3.6.5-3.el10_0.10

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support patch: 0:3.6.5-3.el10_0.10patch: 0:3.6.5-3.el10_0.10

How to fix CVE-2025-12105

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-12105. EPSS is 0.46%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support is installed.

Which versions are affected?

Compare what you have installed with Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support patch: 0:3.6.5-3.el10_0.10 patch: 0:3.6.5-3.el10_0.10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.46%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 23, 2025 · EUVD

    Detected

    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 affecte

  2. Jun 29, 2026 · EUVD

    Updated

    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 affecte

Sources

  • CVE.orgVulnerability recordCVE-2025-12105

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-12105

    30-day exploitation probability 0.46%

    first.org
  • EUVDVulnerability recordEUVD-2025-35663

    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 tw

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.