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Advisory severityHigh7.4Red Hat Linux

High [CVE-2026-15766] Uninitialized Use in Skia

This high-severity Red Hat Linux advisory covers CVE-2026-15766 affecting Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-15766 Source published Source updated

VulniPulse record published Record updated

CVE-2026-15766
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

Uninitialized Use in Skia in Google Chrome prior to 150.0.7871.125 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High) An uninitialized use flaw was found in the Skia component of the Chromium browser.

Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N).

Weakness: CWE-824.

Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 9.

Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6.

Is CVE-2026-15766 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-15766 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-15766?

Upgrade to a fixed release named by Red Hat:

  • webkit2gtk3-0:2.54.0-1.el8_10
  • webkit2gtk3-0:2.54.0-1.el8_6
  • webkit2gtk3-0:2.54.0-1.el8_8
  • webkit2gtk3-0:2.54.0-1.el9_2
  • webkit2gtk3-0:2.54.0-1.el9_4
  • webkit2gtk3-0:2.54.0-1.el9_6
  • RHSA-2026:74084
  • RHSA-2026:92339
  • RHSA-2026:93435
  • RHSA-2026:89822
  • RHSA-2026:92216
  • RHSA-2026:89821

Confirm against the vendor advisory before you patch.

Affected versions
  • < 150.0.7871.125

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Fixed versions
  • webkit2gtk3-0:2.54.0-1.el8_10
  • webkit2gtk3-0:2.54.0-1.el8_6
  • webkit2gtk3-0:2.54.0-1.el8_8
  • webkit2gtk3-0:2.54.0-1.el9_2
  • webkit2gtk3-0:2.54.0-1.el9_4
  • webkit2gtk3-0:2.54.0-1.el9_6
  • RHSA-2026:74084
  • RHSA-2026:92339
  • RHSA-2026:93435
  • RHSA-2026:89822
  • RHSA-2026:92216
  • RHSA-2026:89821

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Mitigation

Upgrade to a fixed release: webkit2gtk3-0:2.54.0-1.el8_10, webkit2gtk3-0:2.54.0-1.el8_6, webkit2gtk3-0:2.54.0-1.el8_8, webkit2gtk3-0:2.54.0-1.el9_2, webkit2gtk3-0:2.54.0-1.el9_4, webkit2gtk3-0:2.54.0-1.el9_6. That is the remediation for this advisory.

The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

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