CVE-2025-31273

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

Security Fix(es):

• angle: insufficient input validation can cause undefined behavior (CVE-2025-6558)

• webkitgtk: A download?s origin may be incorrectly associated (CVE-2025-43240)

• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31273)

• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31278)

• webkitgtk: Processing web content may lead to a denial-of-service (CVE-2025-43211)

• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43212)

• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43216)

• webkitgtk: Processing maliciously crafted web content may disclose sensitive user information (CVE-2025-43227)

• webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-43265)

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.

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

Security Fix(es):

• angle: insufficient input validation can cause undefined behavior (CVE-2025-6558)

• webkitgtk: A download?s origin may be incorrectly associated (CVE-2025-43240)

• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31273)

• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31278)

• webkitgtk: Processing web content may lead to a denial-of-service (CVE-2025-43211)

• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43212)

• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43216)

• webkitgtk: Processing maliciously crafted web content may disclose sensitive user information (CVE-2025-43227)

• webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-43265)

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.

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory corruption.

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

Security Fix(es):

• angle: insufficient input validation can cause undefined behavior (CVE-2025-6558)
• webkitgtk: A download?s origin may be incorrectly associated (CVE-2025-43240)
• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31273)
• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31278)
• webkitgtk: Processing web content may lead to a denial-of-service (CVE-2025-43211)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43212)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43216)
• webkitgtk: Processing maliciously crafted web content may disclose sensitive user information (CVE-2025-43227)
• webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-43265)

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.

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

Security Fix(es):

• angle: insufficient input validation can cause undefined behavior (CVE-2025-6558)
• webkitgtk: A download?s origin may be incorrectly associated (CVE-2025-43240)
• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31273)
• webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31278)
• webkitgtk: Processing web content may lead to a denial-of-service (CVE-2025-43211)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43212)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43216)
• webkitgtk: Processing maliciously crafted web content may disclose sensitive user information (CVE-2025-43227)
• webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-43265)

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.

• Update to 2.48.5. The following CVEs were fixed:
• CVE-2025-6558: fix processing maliciously crafted web content which may lead to an unexpected Safari crash
• CVE-2025-31273: fix processing maliciously crafted web content which may lead to memory corruption
• CVE-2025-31278: fix processing maliciously crafted web content which may lead to memory corruption
• CVE-2025-43212: fix processing maliciously crafted web content which may lead to an unexpected Safari crash
• CVE-2025-43216: fix processing maliciously crafted web content which may lead to an unexpected Safari crash
• CVE-2025-43228: fix issue with visiting a malicious website which may lead to address bar spoofing
• CVE-2025-24189: fix processing maliciously crafted web content which may lead to memory corruption
• CVE-2025-31205: fix issue with a malicious website which may exfiltrate data cross-origin
• CVE-2025-24208: fix loading a malicious iframe which may lead to a cross-site scripting attack
• CVE-2024-54551: fix processing web content which may lead to a denial-of-service
• CVE-2024-44192: fix processing maliciously crafted web content which may lead to an unexpected process crash
• CVE-2024-54467: fix issue with a malicious website which may exfiltrate data cross-origin
• CVE-2025-24162: fix processing maliciously crafted web content which may lead to an unexpected process crash
• CVE-2024-54502: fix processing maliciously crafted web content which may lead to an unexpected process crash
• CVE-2024-44244: fix processing maliciously crafted web content which may lead to an unexpected process crash
• CVE-2024-44185: fix processing maliciously crafted web content which may lead to an unexpected process crash
• CVE-2024-44187: fix issue wit a malicious website may exfiltrate data cross-origin
• CVE-2024-40866: fix issue with visiting a malicious website which may lead to address bar spoofing

We are updating webkit2 to version 2.50.1 that has many security fixes since our current version. Please see the links for additional information

This update for webkit2gtk3 fixes the following issues:

Updated to version 2.48.5:

• CVE-2025-31273: Fixed a vulnerability where processing maliciously crafted web content could lead to memory corruption. (bsc#1247564)
• CVE-2025-31278: Fixed a vulnerability where processing maliciously crafted web content may lead to memory corruption. (bsc#1247563)
• CVE-2025-43211: Fixed a vulnerability where processing web content may lead to a denial-of-service. (bsc#1247562)
• CVE-2025-43212: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247595)
• CVE-2025-43216: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247596)
• CVE-2025-43227: Fixed a vulnerability where processing maliciously crafted web content may disclose sensitive user information. (bsc#1247597)
• CVE-2025-43228: Fixed a vulnerability where visiting a malicious website may lead to address bar spoofing. (bsc#1247598)
• CVE-2025-43240: Fixed a vulnerability where a download's origin may be incorrectly associated. (bsc#1247599)
• CVE-2025-43265: Fixed a vulnerability where processing maliciously crafted web content may disclose internal states of the app. (bsc#1247600)
• CVE-2025-6558: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247742)

Other fixes:

• Improve emoji font selection with USE_SKIA=ON.
• Improve playback of multimedia streams from blob URLs.
• Fix the build with USE_SKIA_OPENTYPE_SVG=ON and USE_SYSPROF_CAPTURE=ON.
• Fix crash when using a WebKitWebView widget in an offscreen window.
• Fix several crashes and rendering issues.
• Fix a crash introduced by the new threaded rendering implementation using Skia API.
• Improve rendering performance by recording layers once and replaying every dirty region in different worker threads.
• Fix a crash when setting WEBKIT_SKIA_GPU_PAINTING_THREADS=0.
• Fix a reference cycle in webkitmediastreamsrc preventing its disposal.
• Increase mem_per_process again to avoid running out of memory.

This update for webkit2gtk3 fixes the following issues:

Updated to version 2.48.5:

• CVE-2025-31273: Fixed a vulnerability where processing maliciously crafted web content could lead to memory corruption. (bsc#1247564)
• CVE-2025-31278: Fixed a vulnerability where processing maliciously crafted web content may lead to memory corruption. (bsc#1247563)
• CVE-2025-43211: Fixed a vulnerability where processing web content may lead to a denial-of-service. (bsc#1247562)
• CVE-2025-43212: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247595)
• CVE-2025-43216: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247596)
• CVE-2025-43227: Fixed a vulnerability where processing maliciously crafted web content may disclose sensitive user information. (bsc#1247597)
• CVE-2025-43228: Fixed a vulnerability where visiting a malicious website may lead to address bar spoofing. (bsc#1247598)
• CVE-2025-43240: Fixed a vulnerability where a download's origin may be incorrectly associated. (bsc#1247599)
• CVE-2025-43265: Fixed a vulnerability where processing maliciously crafted web content may disclose internal states of the app. (bsc#1247600)
• CVE-2025-6558: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247742)

Other fixes:

• Improve emoji font selection with USE_SKIA=ON.
• Improve playback of multimedia streams from blob URLs.
• Fix the build with USE_SKIA_OPENTYPE_SVG=ON and USE_SYSPROF_CAPTURE=ON.
• Fix crash when using a WebKitWebView widget in an offscreen window.
• Fix several crashes and rendering issues.
• Fix a crash introduced by the new threaded rendering implementation using Skia API.
• Improve rendering performance by recording layers once and replaying every dirty region in different worker threads.
• Fix a crash when setting WEBKIT_SKIA_GPU_PAINTING_THREADS=0.
• Fix a reference cycle in webkitmediastreamsrc preventing its disposal.
• Increase mem_per_process again to avoid running out of memory.

This update for webkit2gtk3 fixes the following issues:

Updated to version 2.48.5:

• CVE-2025-31273: Fixed a vulnerability where processing maliciously crafted web content could lead to memory corruption. (bsc#1247564)
• CVE-2025-31278: Fixed a vulnerability where processing maliciously crafted web content may lead to memory corruption. (bsc#1247563)
• CVE-2025-43211: Fixed a vulnerability where processing web content may lead to a denial-of-service. (bsc#1247562)
• CVE-2025-43212: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247595)
• CVE-2025-43216: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247596)
• CVE-2025-43227: Fixed a vulnerability where processing maliciously crafted web content may disclose sensitive user information. (bsc#1247597)
• CVE-2025-43228: Fixed a vulnerability where visiting a malicious website may lead to address bar spoofing. (bsc#1247598)
• CVE-2025-43240: Fixed a vulnerability where a download's origin may be incorrectly associated. (bsc#1247599)
• CVE-2025-43265: Fixed a vulnerability where processing maliciously crafted web content may disclose internal states of the app. (bsc#1247600)
• CVE-2025-6558: Fixed a vulnerability where processing maliciously crafted web content may lead to an unexpected Safari crash. (bsc#1247742)

Other fixes:

• Improve emoji font selection with USE_SKIA=ON.
• Improve playback of multimedia streams from blob URLs.
• Fix the build with USE_SKIA_OPENTYPE_SVG=ON and USE_SYSPROF_CAPTURE=ON.
• Fix crash when using a WebKitWebView widget in an offscreen window.
• Fix several crashes and rendering issues.
• Fix a crash introduced by the new threaded rendering implementation using Skia API.
• Improve rendering performance by recording layers once and replaying every dirty region in different worker threads.
• Fix a crash when setting WEBKIT_SKIA_GPU_PAINTING_THREADS=0.
• Fix a reference cycle in webkitmediastreamsrc preventing its disposal.
• Increase mem_per_process again to avoid running out of memory.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.48.5:

  • CVE-2025-31273: Fixed processing maliciously crafted web content leading to memory corruption (bsc#1247564)
  • CVE-2025-43265: Fixed processing maliciously crafted web content disclosing internal states of the app (bsc#1247600)
  • CVE-2025-43216: Fixed processing maliciously crafted web content leading to an unexpected Safari crash (bsc#1247596)
  • CVE-2025-31278: Fixed processing maliciously crafted web content leading to memory corruption (bsc#1247563)
  • CVE-2025-6558: Fixed processing maliciously crafted web content leading to an unexpected Safari crash. (bsc#1247742)
  • CVE-2025-43227: Fixed Processing maliciously crafted web content disclosing sensitive user information (bsc#1247597)
  • CVE-2025-43240: Fixed download’s origin incorrectly associated (bsc#1247599)
  • CVE-2025-43228: Fixed visiting a malicious website leading to address bar spoofing (bsc#1247598)
  • CVE-2025-43212: Fixed processing maliciously crafted web content leading to an unexpected Safari crash (bsc#1247595)
  • CVE-2025-43211: Fixed processing web content leading to a denial-of-service (bsc#1247562)
  • Fix several crashes.
  • Changes in version 2.48.4:
  • Improve emoji font selection with USE_SKIA=ON.
  • Improve playback of multimedia streams from blob URLs.
  • Fix the build with USE_SKIA_OPENTYPE_SVG=ON and USE_SYSPROF_CAPTURE=ON.
  • Fix the build on LoongArch with USE_SKIA=ON.
  • Fix crash when using a WebKitWebView widget in an offscreen window.
  • Fix several crashes and rendering issues.
  • Changes in version 2.48.3:
  • Fix a crash introduced by the new threaded rendering implementation using Skia API.
  • Improve rendering performance by recording layers once and replaying every dirty region in different worker threads.
  • Fix a crash when setting WEBKIT_SKIA_GPU_PAINTING_THREADS=0.
  • Fix a reference cycle in webkitmediastreamsrc preventing its disposal.

• CVE-2024-44192:Fixed processing maliciously crafted web content leading to an unexpected process crash (bsc#1239863)

• CVE-2024-54467: Fixed data cross-origin exfiltration due to a cookie management issue (bsc#1239864)

• CVE-2025-24201: Fixed out-of-bounds write vulnerability (bsc#1239547)

• CVE-2025-24189: Fixed processing maliciously crafted web content leading to memory corruption (bsc#1247565)

Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.