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Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2025-32912] Libsoup: null pointer dereference in client when server omits the "nonce" parameter in an unauthorized response with digest authentication

This medium-severity Red Hat Linux advisory covers CVE-2025-32912 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2025-32912 Source published Source updated

VulniPulse record published

CVE-2025-32912
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

A flaw was found in libsoup, where SoupAuthDigest is vulnerable to a NULL pointer dereference. The HTTP server may cause the libsoup client to crash.

When a libsoup-based client uses Digest authentication and receives an Unauthorized response in which a malicious or compromised HTTP server omits the required "nonce" parameter, the client crashes.

This is a client-side denial of service only; confidentiality and integrity are not affected, and exploitation requires the user to connect to an attacker-controlled server. Red Hat's severity rating (MODERATE, CVSS 6.5) matches the upstream assessment.

The fix has been deferred for libsoup in Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, and Red Hat In-Vehicle OS 1, where the residual risk is limited to a crash of the affected client application when it connects to a malicious server; a fix is being pursued for libsoup3 in Red Hat Enterprise Linux 10 and for libsoup in Fedora through the community process.

The legacy libsoup component in Red Hat Enterprise Linux 6 and 7 Extended Lifecycle Support is out of support scope, and the mingw-libsoup component in Red Hat Build of RHEL 8 will not be fixed. Weakness: CWE-476.

Red Hat fixing advisory: RHSA-2025:7505.

Affected products named by the advisory: Red Hat Enterprise Linux 7; Red Hat package: libsoup3.

Is CVE-2025-32912 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2025-32912 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2025-32912?

Upgrade to a fixed release named by Red Hat:

  • libsoup3-0:3.6.5-3.el10_0
  • RHSA-2025:7505

Confirm against the vendor advisory before you patch.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Fixed versions
  • libsoup3-0:3.6.5-3.el10_0
  • RHSA-2025:7505

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Currently, no mitigation is available for this vulnerability.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

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