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Fencer Vulns
critical 9.8

CVE-2024-40782 json

A use-after-free issue was addressed with improved memory management.

published 2024-07-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-38623

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 17.6, iOS 16.7.9 and iPadOS 16.7.9, iOS 17.6 and iPadOS 17.6, macOS Sonoma 14.6, tvOS 17.6, visionOS 1.3, watchOS 10.6. Processing maliciously crafted web content may lead to an unexpected process crash.

Patch / fix

  • Apple Safari 17.6
  • Apple iOS and iPadOS 16.7.9, 17.6
  • Apple macOS 14.6
  • Apple tvOS 17.6
  • Apple visionOS 1.3
  • Apple watchOS 10.6
  • apple ios 16.7, 17.6
  • apple ipad_os 16.7, 17.6
  • apple watch_os 10.6
  • apple mac_os 14.6
  • apple tv_os 17.6
  • wpewebkit Debian 14, Debian 13 2.44.3-1
  • webkit2gtk Debian 12 2.44.3-1~deb12u1
  • webkit2gtk Debian 14, Debian 13 2.44.3-1

debian advisories DEBIAN-CVE-2024-40782

  • webkit2gtk Ubuntu 22.04 LTS 2.44.3-0ubuntu0.22.04.1
  • webkit2gtk Ubuntu 24.04 LTS 2.44.3-0ubuntu0.24.04.1

ubuntu advisories UBUNTU-CVE-2024-40782

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • webkit2gtk3 RHEL 8 2.46.3-1.el8_10
  • webkit2gtk3-jsc RHEL 8 2.46.3-1.el8_10
  • webkit2gtk3 RHEL 9 2.46.1-2.el9_4
  • webkit2gtk3-jsc RHEL 9 2.46.1-2.el9_4
  • webkitgtk4 RHEL 7 ELS 2.48.3-2.el7_9
  • webkitgtk4-jsc RHEL 7 ELS 2.48.3-2.el7_9
  • webkit2gtk3 RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 2.46.3-1.el8_4
  • webkit2gtk3-jsc RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 2.46.3-1.el8_4

red hat advisories RHSA-2025:10364RHSA-2024:9636RHSA-2024:9679RHSA-2024:9646RHSA-2024:9680RHSA-2024:9653

  • webkit2gtk3 SLE Module for Desktop Applications 15 SP6, openSUSE Leap 15.6 2.44.3-150600.12.9.1
  • webkit2gtk4 SLE Module for Development Tools 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.44.3-150600.12.9.1
  • webkit2gtk3-soup2 SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.44.3-150600.12.9.1
  • webkit2gtk3 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Desktop Applications 15 SP5 +3 more 2.44.3-150400.4.88.1
  • webkit2gtk4 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Development Tools 15 SP5 +3 more 2.44.3-150400.4.88.1
  • webkit2gtk3-soup2 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Basesystem 15 SP5 +5 more 2.44.3-150400.4.88.1
  • webkit2gtk3 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +4 more 2.44.3-150200.118.1
  • webkit2gtk3 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +4 more 2.44.2-150200.115.1

suse advisories SUSE-SU-2024:3109-1SUSE-SU-2024:3091-1SUSE-SU-2024:3052-1SUSE-SU-2024:2949-1SUSE-SU-2024:2905-1

  • webkit2gtk3 AlmaLinux 8 2.46.3-1.el8_10
  • webkit2gtk3-jsc AlmaLinux 8 2.46.3-1.el8_10
  • webkit2gtk3 AlmaLinux 9 2.46.1-2.el9_4
  • webkit2gtk3-jsc AlmaLinux 9 2.46.1-2.el9_4

almalinux advisories ALSA-2024:9636ALSA-2024:8180

  • webkit2gtk3 Rocky Linux 8 2.46.3-1.el8_10
  • webkit2gtk3 Rocky Linux 9 2.46.1-2.el9_4

rocky linux advisories RLSA-2024:9636RLSA-2024:8180

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-40782 updated cvss 6.5

webkitgtk: webkit2gtk: Use-after-free was addressed with improved memory management

  • Red Hat Enterprise Linux 6 webkitgtk Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: workaround, no fix planned “Do not process or load untrusted web content with WebKitGTK.”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.46.3-1.el8_10, webkit2gtk3-jsc 2.46.3-1.el8_10
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9636
  • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.46.1-2.el9_4, webkit2gtk3-jsc 2.46.1-2.el9_4
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:8180
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) webkit2gtk3 2.46.3-1.el8_2, webkit2gtk3-jsc 2.46.3-1.el8_2
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9680
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3 2.46.3-1.el8_4, webkit2gtk3-jsc 2.46.3-1.el8_4
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9679
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3 2.46.3-1.el8_6, webkit2gtk3-jsc 2.46.3-1.el8_6
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9653
  • Red Hat Enterprise Linux AppStream E4S (v.8.4) webkit2gtk3 2.46.3-1.el8_4, webkit2gtk3-jsc 2.46.3-1.el8_4
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9679
  • Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3 2.46.3-1.el8_6, webkit2gtk3-jsc 2.46.3-1.el8_6
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9653
show 6 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3 2.46.1-1.el9_0, webkit2gtk3-jsc 2.46.1-1.el9_0
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:8496
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) webkit2gtk3 2.46.3-1.el8_8, webkit2gtk3-jsc 2.46.3-1.el8_8
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9646
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) webkit2gtk3 2.46.1-1.el9_2, webkit2gtk3-jsc 2.46.1-1.el9_2
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:8492
  • Red Hat Enterprise Linux AppStream TUS (v.8.4) webkit2gtk3 2.46.3-1.el8_4, webkit2gtk3-jsc 2.46.3-1.el8_4
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9679
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3 2.46.3-1.el8_6, webkit2gtk3-jsc 2.46.3-1.el8_6
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2024:9653
  • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.48.3-2.el7_9, webkitgtk4-jsc 2.48.3-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.48.3-2.el7_9, webkitgtk4-devel 2.48.3-2.el7_9, webkitgtk4-debuginfo 2.48.3-2.el7_9, webkitgtk4-jsc-devel 2.48.3-2.el7_9
    fixed: vendor fix “Do not process or load untrusted web content with WebKitGTK.” RHSA-2025:10364

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Apple Safari
  • Apple iOS and iPadOS
  • Apple macOS
  • Apple tvOS
  • Apple visionOS
  • Apple watchOS
  • apple ios
  • apple ipad_os
  • apple watch_os
  • apple mac_os
  • apple tv_os

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.