CVE-2026-85197: Use After Free in Red Hat Red Hat Enterprise Linux 10
Description
A heap use-after-free vulnerability exists in the libsoup HTTP/2 client implementation used by GNOME applications on Red Hat Enterprise Linux 10. This flaw can be triggered when a malicious HTTP/2 server or a man-in-the-middle attacker sends a GOAWAY frame during an asynchronous file upload, potentially causing memory corruption. The vulnerability may lead to information disclosure or arbitrary code execution. Red Hat has issued an important security update for libsoup3 to address this issue.
CVSS v3.1
Score 7.6high
Affected software
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat
Red Hat Enterprise Linux 6
Red Hat
Red Hat Enterprise Linux 7
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-85197 is a heap use-after-free vulnerability in the libsoup HTTP/2 client on Red Hat Enterprise Linux 10. It occurs when a GNOME application uploads a file using HTTP/2 and the server sends a GOAWAY frame while the file body is being read asynchronously. This can cause memory corruption, which may result in information disclosure or arbitrary code execution. The vulnerability affects libsoup3 and is addressed by an update provided by Red Hat in advisory RHSA-2026:68235.
Potential Impact
Exploitation of this vulnerability can lead to memory corruption in the HTTP/2 client, potentially allowing an attacker to disclose sensitive information or execute arbitrary code. The CVSS v3.1 base score is 7.6 (High), reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Red Hat has released an official security update for libsoup3 in Red Hat Enterprise Linux 10 to fix this vulnerability. Users should apply the update as described in Red Hat advisory RHSA-2026:68235 and the referenced article https://access.redhat.com/articles/11258. Applying this update will remediate the heap use-after-free issue. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-09-03T12:45:28.161Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-85197","vendor":"Red Hat"}]
Threat ID: 6a9a78caacd9273b4941690f
Added to database: 09/04/2026, 07:52:42 UTC
Last enriched: 10/14/2026, 20:03:30 UTC
Last updated: 10/17/2026, 19:03:06 UTC
Views: 85
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