CVE-2026-12548: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 10
CVE-2026-12548 is a medium severity vulnerability in libsoup used by Red Hat Enterprise Linux 10. It involves a heap out-of-bounds read caused by an integer type mismatch when parsing multipart HTTP messages, which can lead to a heap buffer over-read. This flaw may allow a remote attacker to crash an application or potentially disclose heap memory contents.
AI Analysis
Technical Summary
This vulnerability arises from an integer type mismatch between the caller and the soup_headers_parse() function in libsoup, leading to incorrect truncation of the length parameter during multipart HTTP message parsing. The resulting heap out-of-bounds read can cause application crashes or information disclosure of heap memory. The issue affects Red Hat Enterprise Linux 10. No specific affected versions or patch information are provided in the advisory.
Potential Impact
A remote attacker can exploit this flaw to cause a denial of service by crashing applications using libsoup or potentially disclose sensitive heap memory contents. The CVSS 3.1 base score is 4.2 (medium), reflecting low confidentiality impact, no integrity impact, and low availability impact with high attack complexity and requiring user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-12548 for current remediation guidance. No official fix or workaround is currently documented in the provided information.
CVE-2026-12548: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-12548 is a medium severity vulnerability in libsoup used by Red Hat Enterprise Linux 10. It involves a heap out-of-bounds read caused by an integer type mismatch when parsing multipart HTTP messages, which can lead to a heap buffer over-read. This flaw may allow a remote attacker to crash an application or potentially disclose heap memory contents.
CVSS v3.1
Score 4.2medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from an integer type mismatch between the caller and the soup_headers_parse() function in libsoup, leading to incorrect truncation of the length parameter during multipart HTTP message parsing. The resulting heap out-of-bounds read can cause application crashes or information disclosure of heap memory. The issue affects Red Hat Enterprise Linux 10. No specific affected versions or patch information are provided in the advisory.
Potential Impact
A remote attacker can exploit this flaw to cause a denial of service by crashing applications using libsoup or potentially disclose sensitive heap memory contents. The CVSS 3.1 base score is 4.2 (medium), reflecting low confidentiality impact, no integrity impact, and low availability impact with high attack complexity and requiring user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-12548 for current remediation guidance. No official fix or workaround is currently documented in the provided information.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-06-17T18:25:16.477Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-12548","vendor":"Red Hat"}]
Threat ID: 6a5fc4922a4a8d5989a1c9e5
Added to database: 07/21/2026, 19:12:18 UTC
Last enriched: 07/30/2026, 05:10:53 UTC
Last updated: 08/30/2026, 10:52:07 UTC
Views: 61
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