RHSA-2025:23743 - Security Advisory

Topic

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

Security Fix(es):

• webkit: WebKitGTK / WPE WebKit: Out-of-bounds read and integer underflow vulnerability leading to DoS (CVE-2025-13502)
• webkitgtk: A website may exfiltrate image data cross-origin (CVE-2025-43392)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43425)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43427)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43429)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43430)
• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-43431)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43432)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43434)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43440)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43443)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43421)
• webkit: WebKitGTK: Remote user-assisted information disclosure via file drag-and-drop (CVE-2025-13947)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43458)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-66287)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle Long Life 8.6 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle Long Life 8.6 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle Long Life 8.6 s390x

Fixes

• BZ - 2416300 - CVE-2025-13502 webkit: WebKitGTK / WPE WebKit: Out-of-bounds read and integer underflow vulnerability leading to DoS
• BZ - 2416325 - CVE-2025-43392 webkitgtk: A website may exfiltrate image data cross-origin
• BZ - 2416327 - CVE-2025-43425 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416329 - CVE-2025-43427 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416330 - CVE-2025-43429 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416331 - CVE-2025-43430 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416332 - CVE-2025-43431 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
• BZ - 2416334 - CVE-2025-43432 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416335 - CVE-2025-43434 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
• BZ - 2416336 - CVE-2025-43440 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416337 - CVE-2025-43443 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2416355 - CVE-2025-43421 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2418576 - CVE-2025-13947 webkit: WebKitGTK: Remote user-assisted information disclosure via file drag-and-drop
• BZ - 2418855 - CVE-2025-43458 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2418857 - CVE-2025-66287 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash

CVEs

• CVE-2025-13502
• CVE-2025-13947
• CVE-2025-43392
• CVE-2025-43421
• CVE-2025-43425
• CVE-2025-43427
• CVE-2025-43429
• CVE-2025-43430
• CVE-2025-43431
• CVE-2025-43432
• CVE-2025-43433
• CVE-2025-43434
• CVE-2025-43438
• CVE-2025-43440
• CVE-2025-43441
• CVE-2025-43443
• CVE-2025-43458
• CVE-2025-66287

References

• https://access.redhat.com/security/updates/classification/#important