high 7.8

CVE-2023-52606 json

powerpc/lib: Validate size for vector operations

published 2024-03-06 2 y ago modified 2026-08-05 3 mo ago also EUVD-2023-57230

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

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

Some of the fp/vmx code in sstep.c assume a certain maximum size for the instructions being emulated. The size of those operations however is determined separately in analyse_instr().

Add a check to validate the assumption on the maximum size of the operations, so as to prevent any unintended kernel stack corruption.

Patch / fix

fixed in 1 distros 6 links 9

Linux Linux 4.19.307, 5.4.269, 5.10.210, 5.15.149, 6.1.77, 6.6.16, 6.7.4, 6.8

debian ubuntu red hat suse almalinux rocky linux

linux Debian 12 6.1.82-1
linux Debian 14, Debian 13 6.7.7-1

debian advisories DEBIAN-CVE-2023-52606

linux Ubuntu 20.04 LTS 5.4.0-181.201
linux Ubuntu 22.04 LTS 5.15.0-106.116
linux-aws Ubuntu 20.04 LTS 5.4.0-1124.134
linux-aws Ubuntu 22.04 LTS 5.15.0-1061.67
linux-gcp Ubuntu 20.04 LTS 5.4.0-1128.137
linux-gcp Ubuntu 22.04 LTS 5.15.0-1059.67
linux-gke Ubuntu 22.04 LTS 5.15.0-1058.63
linux-ibm Ubuntu 20.04 LTS 5.4.0-1071.76

ubuntu advisories UBUNTU-CVE-2023-52606

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 5.14.0-503.11.1.el9_5
rv RHEL 9 5.14.0-503.11.1.el9_5
perf RHEL 9 5.14.0-503.11.1.el9_5
rtla RHEL 9 5.14.0-503.11.1.el9_5
bpftool RHEL 9 7.4.0-503.11.1.el9_5
libperf RHEL 9 5.14.0-503.11.1.el9_5
kernel-rt RHEL 9 5.14.0-503.11.1.el9_5
kernel-64k RHEL 9 5.14.0-503.11.1.el9_5

red hat advisories RHSA-2025:8796 RHSA-2024:9315 RHSA-2024:3618

kernel-azure SLE Module for Public Cloud 15 SP5, openSUSE Leap 15.5 5.14.21-150500.33.48.1
kernel-syms-azure SLE Module for Public Cloud 15 SP5, openSUSE Leap 15.5 5.14.21-150500.33.48.1
kernel-source-azure SLE Module for Public Cloud 15 SP5, openSUSE Leap 15.5 5.14.21-150500.33.48.1
dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.59.1
kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.59.1
kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.59.1
kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.59.1
kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.59.1

suse advisories SUSE-SU-2024:1490-1 SUSE-SU-2024:1480-1 SUSE-SU-2024:1466-1

kernel AlmaLinux 8 4.18.0-553.5.1.el8_10
perf AlmaLinux 8 4.18.0-553.5.1.el8_10
bpftool AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-core AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-tools AlmaLinux 8 4.18.0-553.5.1.el8_10
python3-perf AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-modules AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-zfcpdump AlmaLinux 8 4.18.0-553.5.1.el8_10

almalinux advisories ALSA-2024:3618

kernel Rocky Linux 8 4.18.0-553.5.1.el8_10

rocky linux advisories RLSA-2024:3618

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-2023-52606 updated 2026-10-29 cvss 5.5

kernel: powerpc/lib: Validate size for vector operations

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
affected: 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
affected: no fix planned “Will not fix”
Red Hat CodeReady Linux Builder (v. 9) libperf 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-s390x 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-x86_64 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-aarch64 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-ppc64le 5.14.0-503.11.1.el9_5
fixed: vendor fix RHSA-2024:9315
Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.72.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.72.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.72.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.72.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.72.1.el9_4
fixed: vendor fix RHSA-2025:8796
Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-503.11.1.el9_5, perf 5.14.0-503.11.1.el9_5, rtla 5.14.0-503.11.1.el9_5, kernel-devel-matched 5.14.0-503.11.1.el9_5, kernel-64k-devel-matched 5.14.0-503.11.1.el9_5, kernel-debug-devel-matched 5.14.0-503.11.1.el9_5, +6 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.72.1.el9_4, perf 5.14.0-427.72.1.el9_4, rtla 5.14.0-427.72.1.el9_4, kernel-devel-matched 5.14.0-427.72.1.el9_4, kernel-64k-devel-matched 5.14.0-427.72.1.el9_4, kernel-debug-devel-matched 5.14.0-427.72.1.el9_4, +6 more
fixed: vendor fix RHSA-2025:8796
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.5.1.el8_10, kernel 4.18.0-553.5.1.el8_10, bpftool 4.18.0-553.5.1.el8_10, kernel-core 4.18.0-553.5.1.el8_10, kernel-tools 4.18.0-553.5.1.el8_10, python3-perf 4.18.0-553.5.1.el8_10, +15 more
fixed: vendor fix RHSA-2024:3618
Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.4.0-503.11.1.el9_5, kernel 5.14.0-503.11.1.el9_5, kernel-64k 5.14.0-503.11.1.el9_5, kernel-core 5.14.0-503.11.1.el9_5, kernel-tools 5.14.0-503.11.1.el9_5, python3-perf 5.14.0-503.11.1.el9_5, +29 more
fixed: vendor fix RHSA-2024:9315

show 7 more

Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.72.1.el9_4, kernel 5.14.0-427.72.1.el9_4, kernel-64k 5.14.0-427.72.1.el9_4, kernel-core 5.14.0-427.72.1.el9_4, kernel-tools 5.14.0-427.72.1.el9_4, python3-perf 5.14.0-427.72.1.el9_4, +28 more
fixed: vendor fix RHSA-2025:8796
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.5.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.5.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.5.1.el8_10
fixed: vendor fix RHSA-2024:3618
Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-503.11.1.el9_5, kernel-rt-core 5.14.0-503.11.1.el9_5, kernel-rt-modules 5.14.0-503.11.1.el9_5, kernel-rt-debug-core 5.14.0-503.11.1.el9_5, kernel-rt-modules-core 5.14.0-503.11.1.el9_5, kernel-rt-debug-modules 5.14.0-503.11.1.el9_5, +4 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.72.1.el9_4, kernel-rt-core 5.14.0-427.72.1.el9_4, kernel-rt-modules 5.14.0-427.72.1.el9_4, kernel-rt-debug-core 5.14.0-427.72.1.el9_4, kernel-rt-modules-core 5.14.0-427.72.1.el9_4, kernel-rt-debug-modules 5.14.0-427.72.1.el9_4, +4 more
fixed: vendor fix RHSA-2025:8796
Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-503.11.1.el9_5, kernel-rt-kvm 5.14.0-503.11.1.el9_5, kernel-rt-core 5.14.0-503.11.1.el9_5, kernel-rt-modules 5.14.0-503.11.1.el9_5, kernel-rt-debug-kvm 5.14.0-503.11.1.el9_5, kernel-rt-debug-core 5.14.0-503.11.1.el9_5, +6 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.72.1.el9_4, kernel-rt-kvm 5.14.0-427.72.1.el9_4, kernel-rt-core 5.14.0-427.72.1.el9_4, kernel-rt-modules 5.14.0-427.72.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.72.1.el9_4, kernel-rt-debug-core 5.14.0-427.72.1.el9_4, +6 more
fixed: vendor fix RHSA-2025:8796
Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers 5.14.0-503.11.1.el9_5 Red Hat Enterprise Linux AppStream (v. 9) kernel-headers 5.14.0-503.11.1.el9_5
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-25-226-15 updated 2026-02-25

Siemens SINEC OS

Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
not affected

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 (2024-03-06)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Linux Linux

Classification

Weakness

CWE-770 Allocation of Resources Without Limits or Throttling

Technology feeds

Linux kernel rss critical rss

References

git.kernel.org /stable/c/42084a428a139f1a429f597d44621e3a18f3e414
mailing-list, patch
git.kernel.org /stable/c/0580f4403ad33f379eef865c2a6fe94de37febdf
mailing-list, patch
git.kernel.org /stable/c/beee482cc4c9a6b1dcffb2e190b4fd8782258678
mailing-list, patch
git.kernel.org /stable/c/de4f5ed63b8a199704d8cdcbf810309d7eb4b36b
mailing-list, patch
git.kernel.org /stable/c/abd26515d4b767ba48241eea77b28ce0872aef3e
mailing-list, patch
git.kernel.org /stable/c/28b8ba8eebf26f66d9f2df4ba550b6b3b136082c
mailing-list, patch
git.kernel.org /stable/c/848e1d7fd710900397e1d0e7584680c1c04e3afd
mailing-list, patch
git.kernel.org /stable/c/8f9abaa6d7de0a70fc68acaedce290c1f96e2e59
mailing-list, patch
lists.debian.org /debian-lts-announce/2024/06/msg00017.html
mailing-list, patch

Sources

CVE List CVE-2023-52606
NVD CVE-2023-52606

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