CVE-2022-29901 | Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

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.

Published: 2022-07-12 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-29901 is rated Low Risk (31.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.09%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-29901

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.44% 0.09% -0.35%
2 2025-11-18 0.07% 0.44% +0.37%
3 2025-03-30 — 0.07% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-29901

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.6 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.1 4.0 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.0 4.0 [email protected]
1.9 2.0 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.4 2.9 [email protected]

Weakness enumeration for CVE-2022-29901

OS Trackers for CVE-2022-29901

vendor priority summary link
debian not yet assigned CVE-2022-29901 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-29901
gentoo high CVE-2022-29901: 1 GLSA(s) (202402-07), 1 atom(s) (app-emulation/xen); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-29901
redhat medium — https://access.redhat.com/security/cve/CVE-2022-29901
suse medium — https://www.suse.com/security/cve/CVE-2022-29901/
ubuntu medium CVE-2022-29901 medium priority: Ubuntu including 167 source packages (linux, linux-allwinner, …), 2042 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1576, released 229, not-affected 167, ignored 69, needed 1. https://ubuntu.com/security/CVE-2022-29901

Affected software / configurations for CVE-2022-29901

Vendor Product Version Raw CPE
intel core_i7-6500u_firmware — cpe:2.3:o:intel:core_i7-6500u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6510u_firmware — cpe:2.3:o:intel:core_i7-6510u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6560u_firmware — cpe:2.3:o:intel:core_i7-6560u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6567u_firmware — cpe:2.3:o:intel:core_i7-6567u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6600u_firmware — cpe:2.3:o:intel:core_i7-6600u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6650u_firmware — cpe:2.3:o:intel:core_i7-6650u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6660u_firmware — cpe:2.3:o:intel:core_i7-6660u_firmware:-:*:*:*:*:*:*:*
intel core_i7-6700_firmware — cpe:2.3:o:intel:core_i7-6700_firmware:-:*:*:*:*:*:*:*
intel core_i7-6700hq_firmware — cpe:2.3:o:intel:core_i7-6700hq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6700k_firmware — cpe:2.3:o:intel:core_i7-6700k_firmware:-:*:*:*:*:*:*:*
intel core_i7-6700t_firmware — cpe:2.3:o:intel:core_i7-6700t_firmware:-:*:*:*:*:*:*:*
intel core_i7-6700te_firmware — cpe:2.3:o:intel:core_i7-6700te_firmware:-:*:*:*:*:*:*:*
intel core_i7-6770hq_firmware — cpe:2.3:o:intel:core_i7-6770hq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6820eq_firmware — cpe:2.3:o:intel:core_i7-6820eq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6820hk_firmware — cpe:2.3:o:intel:core_i7-6820hk_firmware:-:*:*:*:*:*:*:*
intel core_i7-6820hq_firmware — cpe:2.3:o:intel:core_i7-6820hq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6822eq_firmware — cpe:2.3:o:intel:core_i7-6822eq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6870hq_firmware — cpe:2.3:o:intel:core_i7-6870hq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6920hq_firmware — cpe:2.3:o:intel:core_i7-6920hq_firmware:-:*:*:*:*:*:*:*
intel core_i7-6970hq_firmware — cpe:2.3:o:intel:core_i7-6970hq_firmware:-:*:*:*:*:*:*:*
intel core_i7-8550u_firmware — cpe:2.3:o:intel:core_i7-8550u_firmware:-:*:*:*:*:*:*:*
intel core_i7-8559u_firmware — cpe:2.3:o:intel:core_i7-8559u_firmware:-:*:*:*:*:*:*:*
intel core_i7-8650u_firmware — cpe:2.3:o:intel:core_i7-8650u_firmware:-:*:*:*:*:*:*:*
intel core_i7-8700b_firmware — cpe:2.3:o:intel:core_i7-8700b_firmware:-:*:*:*:*:*:*:*
intel core_i7-8700k_firmware — cpe:2.3:o:intel:core_i7-8700k_firmware:-:*:*:*:*:*:*:*
intel core_i7-8705g_firmware — cpe:2.3:o:intel:core_i7-8705g_firmware:-:*:*:*:*:*:*:*
intel core_i7-8706g_firmware — cpe:2.3:o:intel:core_i7-8706g_firmware:-:*:*:*:*:*:*:*
intel core_i7-8709g_firmware — cpe:2.3:o:intel:core_i7-8709g_firmware:-:*:*:*:*:*:*:*
intel core_i7-8750h_firmware — cpe:2.3:o:intel:core_i7-8750h_firmware:-:*:*:*:*:*:*:*
intel core_i7-8809g_firmware — cpe:2.3:o:intel:core_i7-8809g_firmware:-:*:*:*:*:*:*:*
intel core_i7-8850h_firmware — cpe:2.3:o:intel:core_i7-8850h_firmware:-:*:*:*:*:*:*:*
intel core_i3-6100_firmware — cpe:2.3:o:intel:core_i3-6100_firmware:-:*:*:*:*:*:*:*
intel core_i3-6100e_firmware — cpe:2.3:o:intel:core_i3-6100e_firmware:-:*:*:*:*:*:*:*
intel core_i3-6100h_firmware — cpe:2.3:o:intel:core_i3-6100h_firmware:-:*:*:*:*:*:*:*
intel core_i3-6100t_firmware — cpe:2.3:o:intel:core_i3-6100t_firmware:-:*:*:*:*:*:*:*
intel core_i3-6100te_firmware — cpe:2.3:o:intel:core_i3-6100te_firmware:-:*:*:*:*:*:*:*
intel core_i3-6100u_firmware — cpe:2.3:o:intel:core_i3-6100u_firmware:-:*:*:*:*:*:*:*
intel core_i3-6102e_firmware — cpe:2.3:o:intel:core_i3-6102e_firmware:-:*:*:*:*:*:*:*
intel core_i3-6110u_firmware — cpe:2.3:o:intel:core_i3-6110u_firmware:-:*:*:*:*:*:*:*
intel core_i3-6120_firmware — cpe:2.3:o:intel:core_i3-6120_firmware:-:*:*:*:*:*:*:*
intel core_i3-6120t_firmware — cpe:2.3:o:intel:core_i3-6120t_firmware:-:*:*:*:*:*:*:*
intel core_i3-6167u_firmware — cpe:2.3:o:intel:core_i3-6167u_firmware:-:*:*:*:*:*:*:*
intel core_i3-6300_firmware — cpe:2.3:o:intel:core_i3-6300_firmware:-:*:*:*:*:*:*:*
intel core_i3-6300t_firmware — cpe:2.3:o:intel:core_i3-6300t_firmware:-:*:*:*:*:*:*:*
intel core_i3-6320_firmware — cpe:2.3:o:intel:core_i3-6320_firmware:-:*:*:*:*:*:*:*
intel core_i3-6320t_firmware — cpe:2.3:o:intel:core_i3-6320t_firmware:-:*:*:*:*:*:*:*
intel core_i3-8000_firmware — cpe:2.3:o:intel:core_i3-8000_firmware:-:*:*:*:*:*:*:*
intel core_i3-8000t_firmware — cpe:2.3:o:intel:core_i3-8000t_firmware:-:*:*:*:*:*:*:*
intel core_i3-8020_firmware — cpe:2.3:o:intel:core_i3-8020_firmware:-:*:*:*:*:*:*:*
intel core_i3-8100_firmware — cpe:2.3:o:intel:core_i3-8100_firmware:-:*:*:*:*:*:*:*
intel core_i3-8100h_firmware — cpe:2.3:o:intel:core_i3-8100h_firmware:-:*:*:*:*:*:*:*
intel core_i3-8100t_firmware — cpe:2.3:o:intel:core_i3-8100t_firmware:-:*:*:*:*:*:*:*
intel core_i3-8109u_firmware — cpe:2.3:o:intel:core_i3-8109u_firmware:-:*:*:*:*:*:*:*
intel core_i3-8120_firmware — cpe:2.3:o:intel:core_i3-8120_firmware:-:*:*:*:*:*:*:*
intel core_i3-8130u_firmware — cpe:2.3:o:intel:core_i3-8130u_firmware:-:*:*:*:*:*:*:*
intel core_i3-8145u_firmware — cpe:2.3:o:intel:core_i3-8145u_firmware:-:*:*:*:*:*:*:*
intel core_i3-8300_firmware — cpe:2.3:o:intel:core_i3-8300_firmware:-:*:*:*:*:*:*:*
intel core_i3-8300t_firmware — cpe:2.3:o:intel:core_i3-8300t_firmware:-:*:*:*:*:*:*:*
intel core_i3-8350k_firmware — cpe:2.3:o:intel:core_i3-8350k_firmware:-:*:*:*:*:*:*:*
intel core_i5-6200u_firmware — cpe:2.3:o:intel:core_i5-6200u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6210u_firmware — cpe:2.3:o:intel:core_i5-6210u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6260u_firmware — cpe:2.3:o:intel:core_i5-6260u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6267u_firmware — cpe:2.3:o:intel:core_i5-6267u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6287u_firmware — cpe:2.3:o:intel:core_i5-6287u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6300hq_firmware — cpe:2.3:o:intel:core_i5-6300hq_firmware:-:*:*:*:*:*:*:*
intel core_i5-6300u_firmware — cpe:2.3:o:intel:core_i5-6300u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6310u_firmware — cpe:2.3:o:intel:core_i5-6310u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6350hq_firmware — cpe:2.3:o:intel:core_i5-6350hq_firmware:-:*:*:*:*:*:*:*
intel core_i5-6360u_firmware — cpe:2.3:o:intel:core_i5-6360u_firmware:-:*:*:*:*:*:*:*
intel core_i5-6400_firmware — cpe:2.3:o:intel:core_i5-6400_firmware:-:*:*:*:*:*:*:*
intel core_i5-6400t_firmware — cpe:2.3:o:intel:core_i5-6400t_firmware:-:*:*:*:*:*:*:*
intel core_i5-6440eq_firmware — cpe:2.3:o:intel:core_i5-6440eq_firmware:-:*:*:*:*:*:*:*
intel core_i5-6440hq_firmware — cpe:2.3:o:intel:core_i5-6440hq_firmware:-:*:*:*:*:*:*:*
intel core_i5-6442eq_firmware — cpe:2.3:o:intel:core_i5-6442eq_firmware:-:*:*:*:*:*:*:*
intel core_i5-6500_firmware — cpe:2.3:o:intel:core_i5-6500_firmware:-:*:*:*:*:*:*:*
intel core_i5-6500t_firmware — cpe:2.3:o:intel:core_i5-6500t_firmware:-:*:*:*:*:*:*:*
intel core_i5-6500te_firmware — cpe:2.3:o:intel:core_i5-6500te_firmware:-:*:*:*:*:*:*:*
intel core_i5-6600_firmware — cpe:2.3:o:intel:core_i5-6600_firmware:-:*:*:*:*:*:*:*
intel core_i5-6600k_firmware — cpe:2.3:o:intel:core_i5-6600k_firmware:-:*:*:*:*:*:*:*
intel core_i5-6600t_firmware — cpe:2.3:o:intel:core_i5-6600t_firmware:-:*:*:*:*:*:*:*

References for CVE-2022-29901

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