Libsoup: memory leak on soup_header_parse_quality_list() via soup-headers.c
Priority LOW 30CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 22 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-401.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00594 48th percentileScored 2026-11-07
Fix Partial libsoup: 3.6.3Red Hat: 9 advisoriesRed Hat: 22 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libsoup | before 3.6.3 | 3.6.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.62.3-8.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.62.3-8.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | — | 2.62.3-1.el8_2.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | 2.62.3-2.el8_4.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service | — | 2.62.3-2.el8_4.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | — | 2.62.3-2.el8_4.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | 2.62.3-2.el8_6.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — | 2.62.3-2.el8_6.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — | 2.62.3-2.el8_6.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | — | 2.62.3-3.el8_8.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.72.0-10.el9_6.1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — | 2.72.0-8.el9_0.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | — | 2.72.0-8.el9_2.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | 2.72.0-8.el9_4.4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
- libsoup Vendor— Affected before 3.6.3 Fixed in 3.6.3 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.62.3-8.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.62.3-8.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8.2 Advanced Update Support VendorRed Hat Affected — Fixed in 2.62.3-1.el8_2.4 Patch available CNA
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.62.3-2.el8_4.4 Patch available CNA
- Red Hat Enterprise Linux 8.4 Telecommunications Update Service VendorRed Hat Affected — Fixed in 2.62.3-2.el8_4.4 Patch available CNA
- Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.62.3-2.el8_4.4 Patch available CNA
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.62.3-2.el8_6.4 Patch available CNA
- Red Hat Enterprise Linux 8.6 Telecommunications Update Service VendorRed Hat Affected — Fixed in 2.62.3-2.el8_6.4 Patch available CNA
- Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.62.3-2.el8_6.4 Patch available CNA
- Red Hat Enterprise Linux 8.8 Extended Update Support VendorRed Hat Affected — Fixed in 2.62.3-3.el8_8.4 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.72.0-10.el9_6.1 Patch available CNA
- Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.72.0-8.el9_0.4 Patch available CNA
- Red Hat Enterprise Linux 9.2 Extended Update Support VendorRed Hat Affected — Fixed in 2.72.0-8.el9_2.4 Patch available CNA
- Red Hat Enterprise Linux 9.4 Extended Update Support VendorRed Hat Affected — Fixed in 2.72.0-8.el9_4.4 Patch available CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 25
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:enterprise_linux:8::appstream | 8 | — | Red Hat |
| cpe:/o:redhat:enterprise_linux:8::baseos | 8 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.2::appstream | 8.2 | — | Red Hat |
| cpe:/o:redhat:rhel_aus:8.2::baseos | 8.2 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.4::appstream | 8.4 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:8.4::appstream | 8.4 | — | Red Hat |
| cpe:/a:redhat:rhel_tus:8.4::appstream | 8.4 | — | Red Hat |
| cpe:/o:redhat:rhel_aus:8.4::baseos | 8.4 | — | Red Hat |
| cpe:/o:redhat:rhel_e4s:8.4::baseos | 8.4 | — | Red Hat |
| cpe:/o:redhat:rhel_tus:8.4::baseos | 8.4 | — | Red Hat |
- cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
- cpe:/o:redhat:enterprise_linux:8::baseos Versions 8 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.2::appstream Versions 8.2 — ·Red Hat
- cpe:/o:redhat:rhel_aus:8.2::baseos Versions 8.2 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.4::appstream Versions 8.4 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:8.4::appstream Versions 8.4 — ·Red Hat
- cpe:/a:redhat:rhel_tus:8.4::appstream Versions 8.4 — ·Red Hat
- cpe:/o:redhat:rhel_aus:8.4::baseos Versions 8.4 — ·Red Hat
- cpe:/o:redhat:rhel_e4s:8.4::baseos Versions 8.4 — ·Red Hat
- cpe:/o:redhat:rhel_tus:8.4::baseos Versions 8.4 — ·Red Hat
Show 15 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:rhel_aus:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_tus:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/o:redhat:rhel_aus:8.6::baseos | 8.6 | — | Red Hat |
| cpe:/o:redhat:rhel_e4s:8.6::baseos | 8.6 | — | Red Hat |
| cpe:/o:redhat:rhel_tus:8.6::baseos | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_eus:8.8::appstream | 8.8 | — | Red Hat |
| cpe:/o:redhat:rhel_eus:8.8::baseos | 8.8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9::appstream | 9 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:9.0::appstream | 9.0 | — | Red Hat |
| cpe:/a:redhat:rhel_eus:9.2::appstream | 9.2 | — | Red Hat |
| cpe:/a:redhat:rhel_eus:9.4::appstream | 9.4 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:10 | 10 | — | Red Hat |
| cpe:/o:redhat:rhel_els:6 | 6 | — | Red Hat |
| cpe:/o:redhat:rhel_els:7 | 7 | — | Red Hat |
- cpe:/a:redhat:rhel_aus:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_tus:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/o:redhat:rhel_aus:8.6::baseos Versions 8.6 — ·Red Hat
- cpe:/o:redhat:rhel_e4s:8.6::baseos Versions 8.6 — ·Red Hat
- cpe:/o:redhat:rhel_tus:8.6::baseos Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_eus:8.8::appstream Versions 8.8 — ·Red Hat
- cpe:/o:redhat:rhel_eus:8.8::baseos Versions 8.8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:9.0::appstream Versions 9.0 — ·Red Hat
- cpe:/a:redhat:rhel_eus:9.2::appstream Versions 9.2 — ·Red Hat
- cpe:/a:redhat:rhel_eus:9.4::appstream Versions 9.4 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
- cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
- cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
Remediation
- Fix · CNA libsoup Fixed in 3.6.3
Red Hat 9 advisories
- RHSA-2025:7436 Released 2025-05-13 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream (v. 9) libsoup-2.72.0-10.el9_6.1, libsoup-devel-2.72.0-10.el9_6.1
- RHSA-2025:4624 Released 2025-05-07 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) libsoup-devel-2.62.3-2.el8_6.4
- Red Hat Enterprise Linux AppStream E4S (v.8.6) libsoup-devel-2.62.3-2.el8_6.4
- Red Hat Enterprise Linux AppStream TUS (v.8.6) libsoup-devel-2.62.3-2.el8_6.4
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) libsoup-2.62.3-2.el8_6.4
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) libsoup-2.62.3-2.el8_6.4
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) libsoup-2.62.3-2.el8_6.4
- RHSA-2025:4609 Released 2025-05-07 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) libsoup-devel-2.62.3-2.el8_4.4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) libsoup-devel-2.62.3-2.el8_4.4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) libsoup-devel-2.62.3-2.el8_4.4
- Red Hat Enterprise Linux BaseOS AUS (v.8.4) libsoup-2.62.3-2.el8_4.4
- Red Hat Enterprise Linux BaseOS E4S (v.8.4) libsoup-2.62.3-2.el8_4.4
- Red Hat Enterprise Linux BaseOS TUS (v.8.4) libsoup-2.62.3-2.el8_4.4
Show 6 more Red Hat advisories
- RHSA-2025:4568 Released 2025-05-06 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) libsoup-devel-2.62.3-3.el8_8.4
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) libsoup-2.62.3-3.el8_8.4
- RHSA-2025:4508 Released 2025-05-06 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream EUS (v.9.2) libsoup-2.72.0-8.el9_2.4, libsoup-devel-2.72.0-8.el9_2.4
- RHSA-2025:4560 Released 2025-05-06 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream (v. 8) libsoup-devel-2.62.3-8.el8_10
- Red Hat Enterprise Linux BaseOS (v. 8) libsoup-2.62.3-8.el8_10
- RHSA-2025:4538 Released 2025-05-06 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) libsoup-devel-2.62.3-1.el8_2.4
- Red Hat Enterprise Linux BaseOS AUS (v. 8.2) libsoup-2.62.3-1.el8_2.4
- RHSA-2025:4440 Released 2025-05-05 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream EUS (v.9.4) libsoup-2.72.0-8.el9_4.4, libsoup-devel-2.72.0-8.el9_4.4
- RHSA-2025:4439 Released 2025-05-05 · Red Hat rating Importantlibsoup security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) libsoup-2.72.0-8.el9_0.4, libsoup-devel-2.72.0-8.el9_0.4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2025:4560 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:7436 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2025:4538 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2025:4609 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2025:4624 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2025:4609 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2025:4624 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2025:4439 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2025:4568 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2025:4508 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:4440 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2025:4609 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2025:4624 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2025:4560 |
| Red Hat Enterprise Linux BaseOS AUS (v. 8.2) | Fixed | RHSA-2025:4538 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2025:4609 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2025:4624 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.4) | Fixed | RHSA-2025:4609 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2025:4624 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2025:4568 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.4) | Fixed | RHSA-2025:4609 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2025:4624 |
Not affected: 1 product
- Red Hat Enterprise Linux 10
Timeline
- 2026-10-02 Threatist record created from CVE-2025-46420
- 2026-10-03 Alias added: GHSA-pv37-78jj-hvqv
References
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Sources
- CVE-2025-46420 · CVE Program
- CVE-2025-46420 · NVD
- FIRST EPSS
- GHSA-pv37-78jj-hvqv · GitHub Advisory Database · CC BY 4.0
- CVE-2025-46420 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences