medium 5.6

CVE-2022-29901 json

Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

published 2022-07-12 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34211

cvss: 5.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 5.0%; EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions.

Patch / fix

distros 7

debian ubuntu red hat suse opensuse almalinux rocky linux

linux Debian 14, Debian 13, Debian 12 5.18.14-1

debian advisories DEBIAN-CVE-2022-29901

linux Ubuntu 18.04 LTS 4.15.0-204.215
linux Ubuntu 20.04 LTS 5.4.0-132.148
linux Ubuntu 22.04 LTS 5.15.0-46.49
linux-aws Ubuntu 18.04 LTS 4.15.0-1150.163
linux-aws Ubuntu 20.04 LTS 5.4.0-1089.97
linux-aws Ubuntu 22.04 LTS 5.15.0-1017.21
linux-gcp Ubuntu 20.04 LTS 5.4.0-1093.102
linux-gcp Ubuntu 22.04 LTS 5.15.0-1016.21

ubuntu advisories UBUNTU-CVE-2022-29901

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 5.14.0-162.6.1.el9_1
perf RHEL 9 5.14.0-162.6.1.el9_1
bpftool RHEL 9 5.14.0-162.6.1.el9_1
kernel-core RHEL 9 5.14.0-162.6.1.el9_1
kernel-tools RHEL 9 5.14.0-162.6.1.el9_1
python3-perf RHEL 9 5.14.0-162.6.1.el9_1
kernel-modules RHEL 9 5.14.0-162.6.1.el9_1
kernel-zfcpdump RHEL 9 5.14.0-162.6.1.el9_1

red hat advisories RHSA-2022:8267 RHSA-2022:7933 RHSA-2022:8973 RHSA-2022:8974 RHSA-2022:7110 RHSA-2022:7337

kernel-64kb SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS, Enterprise Storage 7.1 5.3.18-150300.59.218.1
kernel-syms SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.218.1
kernel-source SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.218.1
kernel-default SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +5 more 5.3.18-150300.59.218.1
kernel-preempt SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.218.1
kernel-obs-build SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.218.1
kernel-default-base SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 5.3.18-150300.59.218.1.150300.18.130.1
kernel-64kb SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS, Enterprise Storage 7.1 5.3.18-150300.59.201.1

suse advisories SUSE-SU-2025:03310-1 SUSE-SU-2025:1263-1 SUSE-SU-2025:1241-1 SUSE-SU-2025:1194-1 SUSE-SU-2025:1183-1 SUSE-SU-2025:1176-1

spectre-meltdown-checker openSUSE Tumbleweed 26.36.0602723-1.1
kernel-source openSUSE Tumbleweed 5.18.11-1.1
kernel-source openSUSE Tumbleweed 6.6.17-1.1
kernel-default openSUSE Leap Micro 5.2 5.3.18-150300.59.87.1
kernel-default-base openSUSE Leap Micro 5.2 5.3.18-150300.59.87.1.150300.18.50.2

opensuse advisories openSUSE-SU-2026:11242-1 openSUSE-SU-2024:12193-1 openSUSE-SU-2024:13704-1 openSUSE-SU-2022:2549-1

kernel-rt AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-kvm AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-core AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-modules AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-debug-kvm AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-debug-core AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-debug-modules AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
kernel-rt-modules-extra AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1

almalinux advisories ALSA-2022:7933 ALSA-2022:8267 ALSA-2022:7110 ALSA-2022:7134

kernel-rt Rocky Linux 8 4.18.0-372.32.1.rt7.189.el8_6
kernel Rocky Linux 8 4.18.0-372.32.1.el8_6

rocky linux advisories RLSA-2022:7134 RLSA-2022:7110

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-2022-29901 updated 2026-11-05 cvss 5.6

hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions

Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
affected: no fix planned “Will not fix”
Red Hat CodeReady Linux Builder (v. 9) kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-aarch64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-ppc64le 5.14.0-162.6.1.el9_1
fixed: vendor fix RHSA-2022:8267
Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.36.1.el9_0
fixed: vendor fix RHSA-2022:8973
Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-162.6.1.el9_1, kernel-devel-matched 5.14.0-162.6.1.el9_1, kernel-debug-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-zfcpdump-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, +2 more
fixed: vendor fix RHSA-2022:8267
Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.36.1.el9_0, kernel-devel-matched 5.14.0-70.36.1.el9_0, kernel-debug-devel-matched 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.36.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.36.1.el9_0, +2 more
fixed: vendor fix RHSA-2022:8973
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-372.32.1.el8_6, kernel 4.18.0-372.32.1.el8_6, bpftool 4.18.0-372.32.1.el8_6, kernel-core 4.18.0-372.32.1.el8_6, kernel-tools 4.18.0-372.32.1.el8_6, python3-perf 4.18.0-372.32.1.el8_6, +15 more
fixed: vendor fix RHSA-2022:7110
Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-162.6.1.el9_1, bpftool 5.14.0-162.6.1.el9_1, kernel-core 5.14.0-162.6.1.el9_1, kernel-tools 5.14.0-162.6.1.el9_1, python3-perf 5.14.0-162.6.1.el9_1, kernel-modules 5.14.0-162.6.1.el9_1, +14 more
fixed: vendor fix RHSA-2022:8267
Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.36.1.el9_0, bpftool 5.14.0-70.36.1.el9_0, kernel-core 5.14.0-70.36.1.el9_0, kernel-tools 5.14.0-70.36.1.el9_0, python3-perf 5.14.0-70.36.1.el9_0, kernel-modules 5.14.0-70.36.1.el9_0, +14 more
fixed: vendor fix RHSA-2022:8973

show 11 more

Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.80.1.el7, kernel 3.10.0-1160.80.1.el7, bpftool 3.10.0-1160.80.1.el7, python-perf 3.10.0-1160.80.1.el7, kernel-tools 3.10.0-1160.80.1.el7, kernel-tools-libs 3.10.0-1160.80.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7
fixed: vendor fix RHSA-2022:7337
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-372.32.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.32.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.32.1.el8_6
fixed: vendor fix RHSA-2022:7110
Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-trace 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.80.1.rt56.1225.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-kvm 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-trace 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-debug-kvm 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-trace-kvm 3.10.0-1160.80.1.rt56.1225.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.80.1.rt56.1225.el7
fixed: vendor fix RHSA-2022:7338
Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-kvm 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-core 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-modules 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-debug-kvm 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-debug-core 4.18.0-372.32.1.rt7.189.el8_6, +4 more
fixed: vendor fix RHSA-2022:7134
Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules-extra 5.14.0-162.6.1.rt21.168.el9_1, +2 more
fixed: vendor fix RHSA-2022:7933
Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules-extra 5.14.0-70.36.1.rt21.108.el9_0, +2 more
fixed: vendor fix RHSA-2022:8974
Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, +4 more
fixed: vendor fix RHSA-2022:7933
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-kvm 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-kvm 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-core 5.14.0-70.36.1.rt21.108.el9_0, +4 more
fixed: vendor fix RHSA-2022:8974
Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-core 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-modules 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-debug-core 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-debug-modules 4.18.0-372.32.1.rt7.189.el8_6, kernel-rt-modules-extra 4.18.0-372.32.1.rt7.189.el8_6, +2 more
fixed: vendor fix RHSA-2022:7134
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.80.1.el7, kernel 3.10.0-1160.80.1.el7, bpftool 3.10.0-1160.80.1.el7, python-perf 3.10.0-1160.80.1.el7, kernel-kdump 3.10.0-1160.80.1.el7, kernel-tools 3.10.0-1160.80.1.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.80.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.80.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.80.1.el7, kernel 3.10.0-1160.80.1.el7, bpftool 3.10.0-1160.80.1.el7, python-perf 3.10.0-1160.80.1.el7, kernel-tools 3.10.0-1160.80.1.el7, kernel-tools-libs 3.10.0-1160.80.1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.80.1.el7
fixed: vendor fix RHSA-2022:7337
Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.32.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.32.1.el8_6
fixed: vendor fix RHSA-2022:7110

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

Exploit prediction

5.01% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.6	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD	3.1	6.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD	2.0	1.9	AV:L/AC:M/Au:N/C:P/I:N/A:N

Affected products

Intel Intel Microprocessors

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-668 Exposure of Resource to Wrong Sphere

Technology feeds

VMware rss critical rss

References

lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/M27MB3QFNIJV4EQQSXWARHP3OGX6CR6K/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/D4RW5FCIYFNCQOEFJEUIRW3DGYW7CWBG/
vendor-advisory
debian.org /security/2022/dsa-5207
vendor-advisory
security.gentoo.org /glsa/202402-07
vendor-advisory
comsec.ethz.ch /retbleed
intel.com /content/www/us/en/security-center/advisory/intel-sa-00702.html
openwall.com /lists/oss-security/2022/07/12/2
mailing-list
openwall.com /lists/oss-security/2022/07/12/4
mailing-list
openwall.com /lists/oss-security/2022/07/12/5
mailing-list
openwall.com /lists/oss-security/2022/07/13/1
mailing-list
lists.debian.org /debian-lts-announce/2022/09/msg00011.html
mailing-list
security.netapp.com /advisory/ntap-20221007-0007/
lists.debian.org /debian-lts-announce/2022/12/msg00034.html
mailing-list
secpod.com /blog/retbleed-intel-and-amd-processor-information-disclosure-vulnerability/

Sources

CVE List CVE-2022-29901
NVD CVE-2022-29901

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