medium 5.0

CVE-2022-3623 json

Linux Kernel BPF gup.c follow_page_pte race condition

published 2022-10-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-42983

cvss: 5.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation leads to race condition. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211921 was assigned to this vulnerability.

Patch / fix

fixed in 1 distros 6 links 1

linux linux_kernel 5.4.228, 5.10.159, 5.15.78, 5.19.17, 6.0.3

debian ubuntu red hat suse almalinux arch linux

linux Debian 14, Debian 13, Debian 12 6.0.3-1

debian advisories DEBIAN-CVE-2022-3623

linux Ubuntu 20.04 LTS 5.4.0-144.161
linux Ubuntu 22.04 LTS 5.15.0-60.66
linux-aws Ubuntu 20.04 LTS 5.4.0-1097.105
linux-aws Ubuntu 22.04 LTS 5.15.0-1030.34
linux-gcp Ubuntu 20.04 LTS 5.4.0-1101.110
linux-gcp Ubuntu 22.04 LTS 5.15.0-1029.36
linux-gke Ubuntu 20.04 LTS 5.4.0-1095.102
linux-gke Ubuntu 22.04 LTS 5.15.0-1027.32

ubuntu advisories UBUNTU-CVE-2022-3623

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

perf rhev hypervisor 4.4, RHEL 8.6 EUS 4.18.0-372.91.1.el8_6
kernel RHEL 9 5.14.0-284.11.1.el9_2
perf RHEL 9 5.14.0-284.11.1.el9_2
rtla RHEL 9 5.14.0-284.11.1.el9_2
bpftool RHEL 9 7.0.0-284.11.1.el9_2
kernel-64k RHEL 9 5.14.0-284.11.1.el9_2
kernel-core RHEL 9 5.14.0-284.11.1.el9_2
kernel-tools RHEL 9 5.14.0-284.11.1.el9_2

red hat advisories RHSA-2024:0724 RHSA-2023:2458 RHSA-2023:2148 RHSA-2023:2736 RHSA-2023:2951

kernel-azure SLE Module for Public Cloud 15 SP3, openSUSE Leap 15.3 5.3.18-150300.38.83.1
kernel-syms-azure SLE Module for Public Cloud 15 SP3, openSUSE Leap 15.3 5.3.18-150300.38.83.1
kernel-source-azure SLE Module for Public Cloud 15 SP3, openSUSE Leap 15.3 5.3.18-150300.38.83.1

suse advisories SUSE-SU-2022:3897-1

kernel-rt AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-kvm AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-core AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-modules AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-debug-kvm AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-debug-core AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-debug-modules AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
kernel-rt-modules-extra AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8

almalinux advisories ALSA-2023:2736 ALSA-2023:2951 ALSA-2023:2148 ALSA-2023:2458

linux-lts Arch Linux 6.2-1
linux-hardened Arch Linux 6.2-1
linux-zen Arch Linux 6.2-1
linux Arch Linux 6.2-1

arch linux advisories AVG-2834 AVG-2835 AVG-2836 AVG-2837

git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=fac35… commit

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-2022-3623 updated 2026-11-05 cvss 5.8

kernel: denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry

Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.91.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.91.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.91.1.el8_6
fixed: vendor fix RHSA-2024:0724
Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.11.1.el9_2, rtla 5.14.0-284.11.1.el9_2, kernel-devel-matched 5.14.0-284.11.1.el9_2, kernel-64k-devel-matched 5.14.0-284.11.1.el9_2, kernel-debug-devel-matched 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, +5 more
fixed: vendor fix RHSA-2023:2458
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-477.10.1.el8_8, kernel 4.18.0-477.10.1.el8_8, bpftool 4.18.0-477.10.1.el8_8, kernel-core 4.18.0-477.10.1.el8_8, kernel-tools 4.18.0-477.10.1.el8_8, python3-perf 4.18.0-477.10.1.el8_8, +15 more
fixed: vendor fix RHSA-2023:2951
Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.11.1.el9_2, kernel 5.14.0-284.11.1.el9_2, kernel-64k 5.14.0-284.11.1.el9_2, kernel-core 5.14.0-284.11.1.el9_2, kernel-tools 5.14.0-284.11.1.el9_2, python3-perf 5.14.0-284.11.1.el9_2, +28 more
fixed: vendor fix RHSA-2023:2458
Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.91.1.el8_6, kernel 4.18.0-372.91.1.el8_6, bpftool 4.18.0-372.91.1.el8_6, kernel-core 4.18.0-372.91.1.el8_6, kernel-tools 4.18.0-372.91.1.el8_6, python3-perf 4.18.0-372.91.1.el8_6, +15 more
fixed: vendor fix RHSA-2024:0724
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.10.1.el8_8
fixed: vendor fix RHSA-2023:2951
Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.11.1.el9_2
fixed: vendor fix RHSA-2023:2458
Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, +4 more
fixed: vendor fix RHSA-2023:2736

show 5 more

Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-kvm 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-kvm 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-core 5.14.0-284.11.1.rt14.296.el9_2, +6 more
fixed: vendor fix RHSA-2023:2148
Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules-extra 4.18.0-477.10.1.rt7.274.el8_8, +2 more
fixed: vendor fix RHSA-2023:2736
Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-modules 5.14.0-284.11.1.rt14.296.el9_2, +4 more
fixed: vendor fix RHSA-2023:2148
Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.91.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.91.1.el8_6
fixed: vendor fix RHSA-2024:0724
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
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-24-165-10 updated 2024-06-11 cvss 5.0

Siemens SIMATIC and SIPLUS

Siemens SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) <V2.3 Siemens SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) <V2.3 Siemens SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) <V2.3 Siemens SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) <V2.3 Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) <V2.3 Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) <V2.3
affected: fixed in V2.3 support.industry.siemens.com

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: 18 mo ago (2025-04-14)

Exploit prediction

1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.0	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

Technology feeds

Linux kernel rss critical rss

References

git.kernel.org /pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=fac35ba763ed07ba93154c95ffc0c4a55023707f
mailing-list, patch, vendor-advisory
debian.org /security/2023/dsa-5324
vendor-advisory, third-party-advisory
vuldb.com /?id.211921
third-party-advisory
lists.debian.org /debian-lts-announce/2023/03/msg00000.html
mailing-list, third-party-advisory

Sources

CVE List CVE-2022-3623
NVD CVE-2022-3623

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