Vulnerability-Lookup

OPENSUSE-SU-2026:21901-1

Vulnerability from csaf_opensuse - Published: 2026-09-21 12:40 - Updated: 2026-09-24 17:48

Summary

Security update for libsoup

Severity

Important

Notes

Title of the patch: Security update for libsoup

Description of the patch: This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 `client on_data_read()` via `GOAWAY` during body upload (bsc#1279238). - CVE-2026-85534: heap buffer overflow in `SoupSession` through `on_data_source_read_callback()` via `SETTINGS` frame with crafted `INITIAL_WINDOW_SIZE` (bsc#1279239).

Patchnames: openSUSE-Leap-16.0-1729

CVE-2026-85197

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Recommended 13 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:libsoup-3_0-0-0:3.6.6-160000.4.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-3_0-0-0:3.6.6-160000.4.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-3_0-0-0:3.6.6-160000.4.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-3_0-0-0:3.6.6-160000.4.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-devel-0:3.6.6-160000.4.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-devel-0:3.6.6-160000.4.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-devel-0:3.6.6-160000.4.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-devel-0:3.6.6-160000.4.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libsoup-lang-0:3.6.6-160000.4.1.noarch	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:typelib-1_0-Soup-3_0-0:3.6.6-160000.4.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:typelib-1_0-Soup-3_0-0:3.6.6-160000.4.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:typelib-1_0-Soup-3_0-0:3.6.6-160000.4.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:typelib-1_0-Soup-3_0-0:3.6.6-160000.4.1.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2026-85534

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 13 products, the same list as for CVE-2026-85197

Threats

Impact important

References

10 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1279238	self
https://bugzilla.suse.com/1279239	self
https://www.suse.com/security/cve/CVE-2026-85197/	self
https://www.suse.com/security/cve/CVE-2026-85534/	self
https://www.suse.com/security/cve/CVE-2026-85197	external
https://bugzilla.suse.com/1279238	external
https://www.suse.com/security/cve/CVE-2026-85534	external
https://bugzilla.suse.com/1279239	external

JSON

To clipboard

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CVE-2026-85197 (GCVE-0-2026-85197)

Vulnerability from cvelistv5 – Published: 2026-09-04 07:34 – Updated: 2026-09-16 17:20

Title

Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload

Summary

A flaw was found in libsoup. A malicious HTTP/2 server or a Man-in-the-Middle (MITM) attacker can exploit a heap use-after-free vulnerability in the HTTP/2 client implementation. This 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 lead to memory corruption, potentially resulting in information disclosure or arbitrary code execution.

Severity

7.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 18:15 UTC

CWE

CWE-416 - Use After Free

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:68235	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-85197	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2528425	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/552

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:3.6.5-3.el10_2.14 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-09-03 13:00

Credits

Red Hat would like to thank Naresh Kandula (Nottiboy_1337) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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      "title": "Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload",
      "workarounds": [
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CVE-2026-85534 (GCVE-0-2026-85534)

Vulnerability from cvelistv5 – Published: 2026-09-04 10:19 – Updated: 2026-09-04 16:07

Title

Libsoup: libsoup: http/2 client crash in on_data_source_read_callback when settings initial_window_size shrinks during deferred body read

Summary

A flaw was found in libsoup. When a client sends an HTTP/2 request body from a non-pollable input stream, the library can buffer more data than the current flow-control window later allows. A malicious HTTP/2 server can shrink SETTINGS_INITIAL_WINDOW_SIZE while that buffered read is still in progress. The client then copies the full buffer into a smaller DATA callback without a runtime bounds check, which can abort the process or fail the HTTP/2 session.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 16:07 UTC

CWE

CWE-617 - Reachable Assertion

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-85534	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2528440	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/libsoup/-/blob/mas…
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/551

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-09-03 00:00

Credits

Red Hat would like to thank xtromera for reporting this issue.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

OPENSUSE-SU-2026:21901-1

CVE-2026-85197 (GCVE-0-2026-85197)

CVE-2026-85534 (GCVE-0-2026-85534)

Tags

Sightings

Nomenclature

Related by attack behaviour