CVE-2026-0719

Summary

A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 100:3.6.5-3.el10_1.9 < *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:3.6.5-3.el10_0.14 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:2.62.2-11.el7_9 < *unaffected
Red HatRed Hat Enterprise Linux 80:8.10-7 < *unaffected
Red HatRed Hat Enterprise Linux 80:2.62.3-13.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 80:2.62.3-13.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:2.62.3-1.el8_2.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:8.10-7.el8_2.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:2.62.3-2.el8_4.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:8.10-7.el8_4.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:2.62.3-2.el8_4.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:8.10-7.el8_4.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:2.62.3-2.el8_6.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:8.10-7.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:2.62.3-2.el8_6.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:8.10-7.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:2.62.3-2.el8_6.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:8.10-7.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:2.62.3-3.el8_8.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:8.10-7.el8_8.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:2.62.3-3.el8_8.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:8.10-7.el8_8.1 < *unaffected
Red HatRed Hat Enterprise Linux 90:2.72.0-12.el9_7.5 < *unaffected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions0:2.72.0-8.el9_0.9 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:2.72.0-8.el9_2.10 < *unaffected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support0:2.72.0-8.el9_4.9 < *unaffected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support0:2.72.0-10.el9_6.6 < *unaffected
Red HatRed Hat OpenShift Dev Spaces (RHOSDS) 3.26sha256:619c10386e0224e5228876a434c5b8d78d251bc383e2a9491503d6ceddd33c96 < *unaffected
Red HatRed Hat OpenShift Dev Spaces (RHOSDS) 3.26sha256:48d31aa446fe1033ad770ed74442053bcee5102035a9c618fb81cde1743a9692 < *unaffected
Red HatRed Hat OpenShift Dev Spaces (RHOSDS) 3.26sha256:bb9f0ee4fa785a4c3d4a3f6f5e177f4a41350ccef40bc53bfeedee2d52061472 < *unaffected

Weaknesses

  • CWE-121: Stack-based Buffer Overflow

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

libsoup: Signed to Unsigned Conversion Error Leading to Stack-Based Buffer Overflow in libsoup NTLM Authentication

Additional References

References