high 7.8

CVE-2024-40939 json

net: wwan: iosm: Fix tainted pointer delete is case of region creation fail

published 2024-07-12 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-38827

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits: 0; none known

In the Linux kernel, the following vulnerability has been resolved:

In case of region creation fail in ipc_devlink_create_region(), previously created regions delete process starts from tainted pointer which actually holds error code value. Fix this bug by decreasing region index before delete.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Patch / fix

fixed in 1 distros 5 links 4

Linux Linux 6.1.95, 6.6.35, 6.9.6, 6.10

debian ubuntu red hat suse almalinux

linux Debian 12 6.1.99-1
linux Debian 14, Debian 13 6.9.7-1

debian advisories DEBIAN-CVE-2024-40939

linux Ubuntu 24.04 LTS 6.8.0-44.44
linux-aws Ubuntu 24.04 LTS 6.8.0-1015.16
linux-gcp Ubuntu 24.04 LTS 6.8.0-1014.16
linux-gke Ubuntu 24.04 LTS 6.8.0-1010.13
linux-ibm Ubuntu 24.04 LTS 6.8.0-1012.12
linux-azure Ubuntu 24.04 LTS 6.8.0-1014.16
linux-raspi Ubuntu 24.04 LTS 6.8.0-1011.12
linux-riscv Ubuntu 24.04 LTS 6.8.0-44.44.1

ubuntu advisories UBUNTU-CVE-2024-40939

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

kernel RHEL 9 5.14.0-427.33.1.el9_4
rv RHEL 9 5.14.0-427.33.1.el9_4
perf RHEL 9 5.14.0-427.33.1.el9_4
rtla RHEL 9 5.14.0-427.33.1.el9_4
bpftool RHEL 9 7.3.0-427.33.1.el9_4
libperf RHEL 9 5.14.0-427.33.1.el9_4
kernel-rt RHEL 9 5.14.0-427.33.1.el9_4
kernel-64k RHEL 9 5.14.0-427.33.1.el9_4

red hat advisories RHSA-2024:5928

kernel-rt Linux Micro 6.0 6.4.0-10.1
kernel-source-rt Linux Micro 6.0 6.4.0-10.1
kernel-livepatch-MICRO-6-0-RT_Update_2 Linux Micro 6.0 1-1.1
kernel-source Linux Micro 6.0 6.4.0-19.1
kernel-default Linux Micro 6.0 6.4.0-19.1
kernel-kvmsmall Linux Micro 6.0 6.4.0-19.1
kernel-default-base Linux Micro 6.0 6.4.0-17.1.1.51
kernel-livepatch-MICRO-6-0_Update_2 Linux Micro 6.0 1-1.1

suse advisories SUSE-SU-2025:20047-1 SUSE-SU-2025:20044-1 SUSE-SU-2024:3383-1 SUSE-SU-2024:3195-1 SUSE-SU-2024:3194-1

kernel AlmaLinux 9 5.14.0-427.33.1.el9_4
rv AlmaLinux 9 5.14.0-427.33.1.el9_4
perf AlmaLinux 9 5.14.0-427.33.1.el9_4
rtla AlmaLinux 9 5.14.0-427.33.1.el9_4
bpftool AlmaLinux 9 7.3.0-427.33.1.el9_4
libperf AlmaLinux 9 5.14.0-427.33.1.el9_4
kernel-rt AlmaLinux 9 5.14.0-427.33.1.el9_4
kernel-64k AlmaLinux 9 5.14.0-427.33.1.el9_4

almalinux advisories ALSA-2024:5928

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-2024-40939 updated 2026-11-07 cvss 4.4

kernel: net: wwan: iosm: Fix tainted pointer delete is case of region creation fail

Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
affected: no fix available “Fix deferred”
Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.33.1.el9_4, perf 5.14.0-427.33.1.el9_4, rtla 5.14.0-427.33.1.el9_4, kernel-devel-matched 5.14.0-427.33.1.el9_4, kernel-64k-devel-matched 5.14.0-427.33.1.el9_4, kernel-debug-devel-matched 5.14.0-427.33.1.el9_4, +6 more Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.33.1.el9_4, kernel 5.14.0-427.33.1.el9_4, kernel-64k 5.14.0-427.33.1.el9_4, kernel-core 5.14.0-427.33.1.el9_4, kernel-tools 5.14.0-427.33.1.el9_4, python3-perf 5.14.0-427.33.1.el9_4, +28 more Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.33.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.33.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.33.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.33.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.33.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.33.1.el9_4, kernel-rt-kvm 5.14.0-427.33.1.el9_4, kernel-rt-core 5.14.0-427.33.1.el9_4, kernel-rt-modules 5.14.0-427.33.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.33.1.el9_4, kernel-rt-debug-core 5.14.0-427.33.1.el9_4, +6 more Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.33.1.el9_4, kernel-rt-core 5.14.0-427.33.1.el9_4, kernel-rt-modules 5.14.0-427.33.1.el9_4, kernel-rt-debug-core 5.14.0-427.33.1.el9_4, kernel-rt-modules-core 5.14.0-427.33.1.el9_4, kernel-rt-debug-modules 5.14.0-427.33.1.el9_4, +4 more
fixed: vendor fix RHSA-2024:5928
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
not affected: vulnerable code not present

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: no
Technical impact: partial
Assessed: 2 y ago (2024-09-10)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Linux

Classification

Weakness

CWE-416 Use After Free

Technology feeds

Linux kernel rss critical rss

References

Sources

CVE List CVE-2024-40939
NVD CVE-2024-40939

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.

Summary