Medium [CVE-2025-46420] memory leak on soup_header_parse_quality_list via soup-headers.c
This medium-severity Red Hat Linux advisory covers CVE-2025-46420 affecting Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service.
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Summary
A flaw was found in libsoup. It is vulnerable to memory leaks in the soup_header_parse_quality_list() function when parsing a quality list that contains elements with all zeroes.
Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-401.
Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Telecommunications Update Service; Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions; Red Hat Enterprise Linux 8.8 Extended Update Support; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Extended Update Support; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Red Hat lists Red Hat Enterprise Linux 10 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Affected products named by the advisory: Red Hat package: libsoup.
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 19 days ago·verify at source
- libsoup-0:2.62.3-8.el8_10
- libsoup-0:2.62.3-1.el8_2.4
- libsoup-0:2.62.3-2.el8_4.4
- libsoup-0:2.62.3-2.el8_6.4
- libsoup-0:2.62.3-3.el8_8.4
- libsoup-0:2.72.0-10.el9_6.1
- libsoup-0:2.72.0-8.el9_0.4
- libsoup-0:2.72.0-8.el9_2.4
- libsoup-0:2.72.0-8.el9_4.4
- RHSA-2025:4560
- RHSA-2025:4538
- RHSA-2025:4609
- RHSA-2025:4624
- RHSA-2025:4568
- RHSA-2025:7436
- RHSA-2025:4439
- RHSA-2025:4508
- RHSA-2025:4440
Official advisory · high-confidence parse· fetched 19 days ago·verify at source
Mitigation checklist
- Currently, no mitigation is available for this vulnerability.
Official advisory · high-confidence parse· fetched 19 days ago·verify at source
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