SB2025122409 - Red Hat Enterprise Linux 7 Extended Lifecycle Support update for webkitgtk4

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Main Vulnerability Database SB2025122409

SB2025122409 - Red Hat Enterprise Linux 7 Extended Lifecycle Support update for webkitgtk4

Published: December 24, 2025 Updated: February 6, 2026

Security Bulletin ID SB2025122409
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 17% Low 83%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2025-43529)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing HTML content. A remote attacker can trick the victim into visiting a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild. 


2) Buffer overflow (CVE-ID: CVE-2025-43501)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and perform a denial of service attack. 


3) Race condition (CVE-ID: CVE-2025-43531)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a race condition in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and perform a denial of service attack.


4) Buffer overflow (CVE-ID: CVE-2025-43535)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and perform a denial of service attack. 


5) Use-after-free (CVE-ID: CVE-2025-43536)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and perform a denial of service attack. 


6) Type confusion (CVE-ID: CVE-2025-43541)

CWE-ID: CWE-843 - Type confusion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and cause Safari to crash. 


Remediation

Install update from vendor's website.

References