medium 5.3

CVE-2024-35823 json

vt: fix unicode buffer corruption when deleting characters

published 2024-05-17 2 y ago modified 2026-10-15 25 d ago also EUVD-2024-35729

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

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

This is the same issue that was fixed for the VGA text buffer in commit 39cdb68c64d8 ("vt: fix memory overlapping when deleting chars in the buffer"). The cure is also the same i.e. replace memcpy() with memmove() due to the overlaping buffers.

Patch / fix

fixed in 2 distros 6 links 8

Linux Linux 4.19.312, 5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1.1

debian ubuntu red hat suse almalinux rocky linux

linux Debian 12 6.1.85-1
linux Debian 14, Debian 13 6.7.12-1

debian advisories DEBIAN-CVE-2024-35823

linux Ubuntu 20.04 LTS 5.4.0-189.209
linux Ubuntu 22.04 LTS 5.15.0-116.126
linux-aws Ubuntu 20.04 LTS 5.4.0-1128.138
linux-aws Ubuntu 22.04 LTS 5.15.0-1065.71
linux-gcp Ubuntu 20.04 LTS 5.4.0-1132.141
linux-gcp Ubuntu 22.04 LTS 5.15.0-1064.72
linux-gke Ubuntu 22.04 LTS 5.15.0-1062.68
linux-ibm Ubuntu 20.04 LTS 5.4.0-1075.80

ubuntu advisories UBUNTU-CVE-2024-35823

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 8 4.18.0-553.16.1.el8_10
perf RHEL 8 4.18.0-553.16.1.el8_10
bpftool RHEL 8 4.18.0-553.16.1.el8_10
kernel-core RHEL 8 4.18.0-553.16.1.el8_10
kernel-tools RHEL 8 4.18.0-553.16.1.el8_10
python3-perf RHEL 8 4.18.0-553.16.1.el8_10
kernel-modules RHEL 8 4.18.0-553.16.1.el8_10
kernel-zfcpdump RHEL 8 4.18.0-553.16.1.el8_10

red hat advisories RHSA-2024:10262 RHSA-2024:5101 RHSA-2024:5363 RHSA-2024:5066 RHSA-2024:5067 RHSA-2024:6297

kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
kernel-livepatch-MICRO-6-0-RT_Update_5 Linux Micro 6.1, Linux Micro 6.0 1-1.1
kernel-rt Linux Micro 6.0 6.4.0-9.1
kernel-source-rt Linux Micro 6.0 6.4.0-9.1
kernel-source Linux Micro 6.0 6.4.0-18.1
kernel-default Linux Micro 6.0 6.4.0-18.1
kernel-kvmsmall Linux Micro 6.0 6.4.0-18.1

suse advisories SUSE-SU-2025:20166-1 SUSE-SU-2025:20249-1 SUSE-SU-2025:20028-1 SUSE-SU-2025:20008-1 SUSE-SU-2024:2973-1 SUSE-SU-2024:2203-1

kernel AlmaLinux 9 5.14.0-427.31.1.el9_4
rv AlmaLinux 9 5.14.0-427.31.1.el9_4
perf AlmaLinux 9 5.14.0-427.31.1.el9_4
rtla AlmaLinux 9 5.14.0-427.31.1.el9_4
bpftool AlmaLinux 9 7.3.0-427.31.1.el9_4
libperf AlmaLinux 9 5.14.0-427.31.1.el9_4
kernel-rt AlmaLinux 9 5.14.0-427.31.1.el9_4
kernel-64k AlmaLinux 9 5.14.0-427.31.1.el9_4

almalinux advisories ALSA-2024:5363 ALSA-2024:5101

kernel Rocky Linux 8 4.18.0-553.16.1.el8_10.cloud.0.1
kernel Rocky Linux 9 5.14.0-427.31.1.el9_4
kernel Rocky Linux 8 4.18.0-553.16.1.el8_10

rocky linux advisories RXSA-2024:5101 RLSA-2024:5363 RLSA-2024:5101

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-2024-35823 updated 2026-11-05 cvss 5.5

kernel: vt: fix unicode buffer corruption when deleting characters

Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
affected: workaround, no fix planned “Out of support scope”
Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more 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: workaround, no fix available
Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.81.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.81.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.81.1.el8_8
fixed: vendor fix RHSA-2024:10262
Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.77.1.el9_2
fixed: vendor fix RHSA-2024:5066
Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.31.1.el9_4, perf 5.14.0-427.31.1.el9_4, rtla 5.14.0-427.31.1.el9_4, kernel-devel-matched 5.14.0-427.31.1.el9_4, kernel-64k-devel-matched 5.14.0-427.31.1.el9_4, kernel-debug-devel-matched 5.14.0-427.31.1.el9_4, +6 more
fixed: vendor fix RHSA-2024:5363
Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.77.1.el9_2, rtla 5.14.0-284.77.1.el9_2, kernel-devel-matched 5.14.0-284.77.1.el9_2, kernel-64k-devel-matched 5.14.0-284.77.1.el9_2, kernel-debug-devel-matched 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.77.1.el9_2, +5 more
fixed: vendor fix RHSA-2024:5066
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.16.1.el8_10, kernel 4.18.0-553.16.1.el8_10, bpftool 4.18.0-553.16.1.el8_10, kernel-core 4.18.0-553.16.1.el8_10, kernel-tools 4.18.0-553.16.1.el8_10, python3-perf 4.18.0-553.16.1.el8_10, +15 more
fixed: vendor fix RHSA-2024:5101
Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.31.1.el9_4, kernel 5.14.0-427.31.1.el9_4, kernel-64k 5.14.0-427.31.1.el9_4, kernel-core 5.14.0-427.31.1.el9_4, kernel-tools 5.14.0-427.31.1.el9_4, python3-perf 5.14.0-427.31.1.el9_4, +28 more
fixed: vendor fix RHSA-2024:5363

show 9 more

Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.121.1.el8_6, kernel 4.18.0-372.121.1.el8_6, bpftool 4.18.0-372.121.1.el8_6, kernel-core 4.18.0-372.121.1.el8_6, kernel-tools 4.18.0-372.121.1.el8_6, python3-perf 4.18.0-372.121.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.121.1.el8_6, kernel 4.18.0-372.121.1.el8_6, bpftool 4.18.0-372.121.1.el8_6, kernel-core 4.18.0-372.121.1.el8_6, kernel-tools 4.18.0-372.121.1.el8_6, python3-perf 4.18.0-372.121.1.el8_6, +15 more
fixed: vendor fix RHSA-2024:6297
Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.81.1.el8_8, kernel 4.18.0-477.81.1.el8_8, bpftool 4.18.0-477.81.1.el8_8, kernel-core 4.18.0-477.81.1.el8_8, kernel-tools 4.18.0-477.81.1.el8_8, python3-perf 4.18.0-477.81.1.el8_8, +15 more
fixed: vendor fix RHSA-2024:10262
Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.77.1.el9_2, kernel 5.14.0-284.77.1.el9_2, kernel-64k 5.14.0-284.77.1.el9_2, kernel-core 5.14.0-284.77.1.el9_2, kernel-tools 5.14.0-284.77.1.el9_2, python3-perf 5.14.0-284.77.1.el9_2, +28 more
fixed: vendor fix RHSA-2024:5066
Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.121.1.el8_6, kernel 4.18.0-372.121.1.el8_6, bpftool 4.18.0-372.121.1.el8_6, kernel-core 4.18.0-372.121.1.el8_6, kernel-tools 4.18.0-372.121.1.el8_6, python3-perf 4.18.0-372.121.1.el8_6, +8 more
fixed: vendor fix RHSA-2024:6297
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.16.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.16.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.16.1.el8_10
fixed: vendor fix RHSA-2024:5101
Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.31.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.31.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.31.1.el9_4, kernel-rt-kvm 5.14.0-427.31.1.el9_4, kernel-rt-core 5.14.0-427.31.1.el9_4, kernel-rt-modules 5.14.0-427.31.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.31.1.el9_4, kernel-rt-debug-core 5.14.0-427.31.1.el9_4, +6 more
fixed: vendor fix RHSA-2024:5363
Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-modules 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-modules-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-modules 5.14.0-284.77.1.rt14.362.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-kvm 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-modules 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-kvm 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-core 5.14.0-284.77.1.rt14.362.el9_2, +6 more
fixed: vendor fix RHSA-2024:5067
Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.31.1.el9_4, kernel-rt-core 5.14.0-427.31.1.el9_4, kernel-rt-modules 5.14.0-427.31.1.el9_4, kernel-rt-debug-core 5.14.0-427.31.1.el9_4, kernel-rt-modules-core 5.14.0-427.31.1.el9_4, kernel-rt-debug-modules 5.14.0-427.31.1.el9_4, +4 more
fixed: vendor fix RHSA-2024:5363
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux AppStream (v. 9) kernel-headers 5.14.0-427.31.1.el9_4 Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.77.1.el9_2 Red Hat Enterprise Linux BaseOS AUS (v.8.6) kernel-doc 4.18.0-372.121.1.el8_6 Red Hat Enterprise Linux BaseOS E4S (v.8.6) kernel-doc 4.18.0-372.121.1.el8_6 Red Hat Enterprise Linux BaseOS TUS (v.8.6) kernel-doc 4.18.0-372.121.1.el8_6

+1 more productsfewer

Red Hat Enterprise Linux CRB (v. 9) kernel-cross-headers 5.14.0-427.31.1.el9_4

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 ICSA-24-102-01 updated 2026-05-14 cvss 5.3

Siemens SIMATIC S7-1500 TM MFP

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-05-17)

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

Linux Linux
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

Technology feeds

Linux kernel rss critical rss

References

git.kernel.org /stable/c/fc7dfe3d123f00e720be80b920da287810a1f37d
patch
git.kernel.org /stable/c/ff7342090c1e8c5a37015c89822a68b275b46f8a
patch
git.kernel.org /stable/c/1ce408f75ccf1e25b3fddef75cca878b55f2ac90
patch
git.kernel.org /stable/c/0190d19d7651c08abc187dac3819c61b726e7e3f
patch
git.kernel.org /stable/c/994a1e583c0c206c8ca7d03334a65b79f4d8bc51
patch
git.kernel.org /stable/c/7529cbd8b5f6697b369803fe1533612c039cabda
patch
git.kernel.org /stable/c/2933b1e4757a0a5c689cf48d80b1a2a85f237ff1
patch
git.kernel.org /stable/c/1581dafaf0d34bc9c428a794a22110d7046d186d
patch
lists.debian.org /debian-lts-announce/2024/06/msg00017.html
mailing-list, third-party-advisory
lists.debian.org /debian-lts-announce/2024/06/msg00020.html
mailing-list, third-party-advisory
cert-portal.siemens.com /productcert/html/ssa-265688.html

Sources

CVE List CVE-2024-35823
NVD CVE-2024-35823

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