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

Published Jul 1, 2022
·
Updated

A flaw was found in hw. Non-transparent sharing of branch predictor targets between contexts in some Intel(R) processors may potentially allow an authorized user to enable information disclosure via local access.

Other sources

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.

Non-transparent sharing of branch predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

— Red Hat

Affected Software

529 affected componentsFixes available
redhat/kernel-rt<0:3.10.0-1160.80.1.rt56.1225.el7
0:3.10.0-1160.80.1.rt56.1225.el7
redhat/kernel<0:3.10.0-1160.80.1.el7
0:3.10.0-1160.80.1.el7
redhat/kernel-rt<0:4.18.0-372.32.1.rt7.189.el8_6
0:4.18.0-372.32.1.rt7.189.el8_6
redhat/kernel<0:4.18.0-372.32.1.el8_6
0:4.18.0-372.32.1.el8_6
redhat/kernel<0:5.14.0-162.6.1.el9_1
0:5.14.0-162.6.1.el9_1
redhat/kernel-rt<0:5.14.0-162.6.1.rt21.168.el9_1
0:5.14.0-162.6.1.rt21.168.el9_1
redhat/kernel<0:5.14.0-70.36.1.el9_0
0:5.14.0-70.36.1.el9_0
redhat/kernel-rt<0:5.14.0-70.36.1.rt21.108.el9_0
0:5.14.0-70.36.1.rt21.108.el9_0
Intel Core I7-6500u Firmware
Intel Core I7-6500u
Intel Core I7-6510u Firmware
Intel Core I7-6510u
Intel Core I7-6560u Firmware
Intel Core I7-6560u
Intel Core I7-6567u Firmware
Intel Core I7-6567u
Intel Core I7-6600u Firmware
Intel Core I7-6600u
Intel Core I7-6650u Firmware
Intel Core I7-6650u
Intel Core I7-6660u Firmware
Intel Core I7-6660u
Intel Core I7-6700 Firmware
Intel Core I7-6700
Intel Core I7-6700hq Firmware
Intel Core I7-6700hq
Intel Core I7-6700k Firmware
Intel Core I7-6700k
Intel Core I7-6700t Firmware
Intel Core I7-6700t
Intel Core I7-6700te Firmware
Intel Core I7-6700te
Intel Core I7-6770hq Firmware
Intel Core I7-6770hq
Intel Core I7-6820eq Firmware
Intel Core I7-6820eq
Intel Core I7-6820hk Firmware
Intel Core I7-6820hk
Intel Core I7-6820hq Firmware
Intel Core I7-6820hq
Intel Core I7-6822eq Firmware
Intel Core I7-6822eq
Intel Core I7-6870hq Firmware
Intel Core I7-6870hq
Intel Core I7-6920hq Firmware
Intel Core I7-6920hq
Intel Core I7-6970hq Firmware
Intel Core I7-6970hq
Intel Core I7-8550u Firmware
Intel Core I7-8550u
Intel Core I7-8559u Firmware
Intel Core I7-8559u
Intel Core I7-8650u Firmware
Intel Core I7-8650u
Intel Core I7-8700b Firmware
Intel Core I7-8700b
Intel Core I7-8700k Firmware
Intel Core I7-8700k
Intel Core I7-8705g Firmware
Intel Core I7-8705g
Intel Core I7-8706g Firmware
Intel Core I7-8706g
Intel Core I7-8709g Firmware
Intel Core I7-8709g
Intel Core I7-8750h Firmware
Intel Core I7-8750h
Intel Core I7-8809g Firmware
Intel Core I7-8809g
Intel Core I7-8850h Firmware
Intel Core I7-8850h
Intel Core I3-6100 Firmware
Intel Core I3-6100
Intel Core I3-6100e Firmware
Intel Core I3-6100e
Intel Core I3-6100h Firmware
Intel Core I3-6100h
Intel Core I3-6100t Firmware
Intel Core I3-6100t
Intel Core I3-6100te Firmware
Intel Core I3-6100te
Intel Core I3-6100u Firmware
Intel Core I3-6100u
Intel Core I3-6102e Firmware
Intel Core I3-6102e
Intel Core I3-6110u Firmware
Intel Core I3-6110u
Intel Core I3-6120 Firmware
Intel Core I3-6120
Intel Core I3-6120t Firmware
Intel Core I3-6120t
Intel Core I3-6167u Firmware
Intel Core I3-6167u
Intel Core I3-6300 Firmware
Intel Core I3-6300
Intel Core I3-6300t Firmware
Intel Core I3-6300t
Intel Core I3-6320 Firmware
Intel Core I3-6320
Intel Core I3-6320t Firmware
Intel Core I3-6320t
Intel Core I3-8000 Firmware
Intel Core I3-8000
Intel Core I3-8000t Firmware
Intel Core I3-8000t
Intel Core I3-8020 Firmware
Intel Core I3-8020
Intel Core I3-8100 Firmware
Intel Core I3-8100
Intel Core I3-8100h Firmware
Intel Core I3-8100h
Intel Core I3-8100t Firmware
Intel Core I3-8100t
Intel Core I3-8109u Firmware
Intel Core I3-8109u
Intel Core I3-8120 Firmware
Intel Core I3-8120
Intel Core I3-8130u Firmware
Intel Core I3-8130u
Intel Core I3-8145u Firmware
Intel Core I3-8145u
Intel Core I3-8300 Firmware
Intel Core I3-8300
Intel Core I3-8300t Firmware
Intel Core I3-8300t
Intel Core I3-8350k Firmware
Intel Core I3-8350k
Intel Core I5-6200u Firmware
Intel Core I5-6200u
Intel Core I5-6210u Firmware
Intel Core I5-6210u
Intel Core I5-6260u Firmware
Intel Core I5-6260u
Intel Core I5-6267u Firmware
Intel Core I5-6267u
Intel Core I5-6287u Firmware
Intel Core I5-6287u
Intel Core I5-6300hq Firmware
Intel Core I5-6300hq
Intel Core I5-6300u Firmware
Intel Core I5-6300u
Intel Core I5-6310u Firmware
Intel Core I5-6310u
Intel Core I5-6350hq Firmware
Intel Core I5-6350hq
Intel Core I5-6360u Firmware
Intel Core I5-6360u
Intel Core I5-6400 Firmware
Intel Core I5-6400
Intel Core I5-6400t Firmware
Intel Core I5-6400t
Intel Core I5-6440eq Firmware
Intel Core I5-6440eq
Intel Core I5-6440hq Firmware
Intel Core I5-6440hq
Intel Core I5-6442eq Firmware
Intel Core I5-6442eq
Intel Core I5-6500 Firmware
Intel Core I5-6500
Intel Core I5-6500t Firmware
Intel Core I5-6500t
Intel Core I5-6500te Firmware
Intel Core I5-6500te
Intel Core I5-6600 Firmware
Intel Core I5-6600
Intel Core I5-6600k Firmware
Intel Core I5-6600k
Intel Core I5-6600t Firmware
Intel Core I5-6600t
Intel Core I5-8200y Firmware
Intel Core I5-8200y
Intel Core I5-8210y Firmware
Intel Core I5-8210y
Intel Core I5-8250u Firmware
Intel Core I5-8250u
Intel Core I5-8259u Firmware
Intel Core I5-8259u
Intel Core I5-8265u Firmware
Intel Core I5-8265u
Intel Core I5-8269u Firmware
Intel Core I5-8269u
Intel Core I5-8300h Firmware
Intel Core I5-8300h
Intel Core I5-8305g Firmware
Intel Core I5-8305g
Intel Core I5-8310y Firmware
Intel Core I5-8310y
Intel Core I5-8350u Firmware
Intel Core I5-8350u
Intel Core I5-8365u Firmware
Intel Core I5-8365u
Intel Core I5-8400 Firmware
Intel Core I5-8400
Intel Core I5-8400b Firmware
Intel Core I5-8400b
Intel Core I5-8400h Firmware
Intel Core I5-8400h
Intel Core I5-8400t Firmware
Intel Core I5-8400t
Intel Core I5-8420 Firmware
Intel Core I5-8420
Intel Core I5-8420t Firmware
Intel Core I5-8420t
Intel Core I5-8500 Firmware
Intel Core I5-8500
Intel Core I5-8500b Firmware
Intel Core I5-8500b
Intel Core I5-8500t Firmware
Intel Core I5-8500t
Intel Core I5-8550 Firmware
Intel Core I5-8550
Intel Core I5-8550u Firmware
Intel Core I5-8550u
Intel Core I5-8600 Firmware
Intel Core I5-8600
Intel Core I5-8600k Firmware
Intel Core I5-8600k
Intel Core I5-8600t Firmware
Intel Core I5-8600t
Intel Core I5-8650 Firmware
Intel Core I5-8650
Intel Core I5-8650k Firmware
Intel Core I5-8650k
Intel Core I7-8500y Firmware
Intel Core I7-8500y
Intel Core I7-8510y Firmware
Intel Core I7-8510y
Intel Core I7-8557u Firmware
Intel Core I7-8557u
Intel Core I7-8560u Firmware
Intel Core I7-8560u
Intel Core I7-8565u Firmware
Intel Core I7-8565u
Intel Core I7-8569u Firmware
Intel Core I7-8569u
Intel Core I7-8665u Firmware
Intel Core I7-8665u
Intel Core I7-8670 Firmware
Intel Core I7-8670
Intel Core I7-8670t Firmware
Intel Core I7-8670t
Intel Core I7-8700 Firmware
Intel Core I7-8700
Intel Core I7-8700t Firmware
Intel Core I7-8700t
Intel Core I7-8750hf Firmware
Intel Core I7-8750hf
Intel Core I9-8950hk Firmware
Intel Core I9-8950hk
Intel Core M3-6y30 Firmware
Intel Core M3-6y30
Intel Core M3-8100y Firmware
Intel Core M3-8100y
Intel Core M5-6y54 Firmware
Intel Core M5-6y54
Intel Core M5-6y57 Firmware
Intel Core M5-6y57
Intel Core M7-6y75 Firmware
Intel Core M7-6y75
Fedoraproject Fedora=35
Fedoraproject Fedora=36
XEN Xen
VMware ESXi=7.0
VMware ESXi=7.0-beta
VMware ESXi=7.0-update_1
VMware ESXi=7.0-update_1a
VMware ESXi=7.0-update_1b
VMware ESXi=7.0-update_1c
VMware ESXi=7.0-update_1d
VMware ESXi=7.0-update_2
VMware ESXi=7.0-update_2a
VMware ESXi=7.0-update_2c
VMware ESXi=7.0-update_2d
VMware ESXi=7.0-update_2e
VMware ESXi=7.0-update_3c
VMware ESXi=7.0-update_3d
VMware ESXi=7.0-update_3e
Debian Debian Linux=10.0
Debian Debian Linux=11.0
All of the following
Intel Core I7-6500u Firmware
Intel Core I7-6500u
All of the following
Intel Core I7-6510u Firmware
Intel Core I7-6510u
All of the following
Intel Core I7-6560u Firmware
Intel Core I7-6560u
All of the following
Intel Core I7-6567u Firmware
Intel Core I7-6567u
All of the following
Intel Core I7-6600u Firmware
Intel Core I7-6600u
All of the following
Intel Core I7-6650u Firmware
Intel Core I7-6650u
All of the following
Intel Core I7-6660u Firmware
Intel Core I7-6660u
All of the following
Intel Core I7-6700 Firmware
Intel Core I7-6700
All of the following
Intel Core I7-6700hq Firmware
Intel Core I7-6700hq
All of the following
Intel Core I7-6700k Firmware
Intel Core I7-6700k
All of the following
Intel Core I7-6700t Firmware
Intel Core I7-6700t
All of the following
Intel Core I7-6700te Firmware
Intel Core I7-6700te
All of the following
Intel Core I7-6770hq Firmware
Intel Core I7-6770hq
All of the following
Intel Core I7-6820eq Firmware
Intel Core I7-6820eq
All of the following
Intel Core I7-6820hk Firmware
Intel Core I7-6820hk
All of the following
Intel Core I7-6820hq Firmware
Intel Core I7-6820hq
All of the following
Intel Core I7-6822eq Firmware
Intel Core I7-6822eq
All of the following
Intel Core I7-6870hq Firmware
Intel Core I7-6870hq
All of the following
Intel Core I7-6920hq Firmware
Intel Core I7-6920hq
All of the following
Intel Core I7-6970hq Firmware
Intel Core I7-6970hq
All of the following
Intel Core I7-8550u Firmware
Intel Core I7-8550u
All of the following
Intel Core I7-8559u Firmware
Intel Core I7-8559u
All of the following
Intel Core I7-8650u Firmware
Intel Core I7-8650u
All of the following
Intel Core I7-8700b Firmware
Intel Core I7-8700b
All of the following
Intel Core I7-8700k Firmware
Intel Core I7-8700k
All of the following
Intel Core I7-8705g Firmware
Intel Core I7-8705g
All of the following
Intel Core I7-8706g Firmware
Intel Core I7-8706g
All of the following
Intel Core I7-8709g Firmware
Intel Core I7-8709g
All of the following
Intel Core I7-8750h Firmware
Intel Core I7-8750h
All of the following
Intel Core I7-8809g Firmware
Intel Core I7-8809g
All of the following
Intel Core I7-8850h Firmware
Intel Core I7-8850h
All of the following
Intel Core I3-6100 Firmware
Intel Core I3-6100
All of the following
Intel Core I3-6100e Firmware
Intel Core I3-6100e
All of the following
Intel Core I3-6100h Firmware
Intel Core I3-6100h
All of the following
Intel Core I3-6100t Firmware
Intel Core I3-6100t
All of the following
Intel Core I3-6100te Firmware
Intel Core I3-6100te
All of the following
Intel Core I3-6100u Firmware
Intel Core I3-6100u
All of the following
Intel Core I3-6102e Firmware
Intel Core I3-6102e
All of the following
Intel Core I3-6110u Firmware
Intel Core I3-6110u
All of the following
Intel Core I3-6120 Firmware
Intel Core I3-6120
All of the following
Intel Core I3-6120t Firmware
Intel Core I3-6120t
All of the following
Intel Core I3-6167u Firmware
Intel Core I3-6167u
All of the following
Intel Core I3-6300 Firmware
Intel Core I3-6300
All of the following
Intel Core I3-6300t Firmware
Intel Core I3-6300t
All of the following
Intel Core I3-6320 Firmware
Intel Core I3-6320
All of the following
Intel Core I3-6320t Firmware
Intel Core I3-6320t
All of the following
Intel Core I3-8000 Firmware
Intel Core I3-8000
All of the following
Intel Core I3-8000t Firmware
Intel Core I3-8000t
All of the following
Intel Core I3-8020 Firmware
Intel Core I3-8020
All of the following
Intel Core I3-8100 Firmware
Intel Core I3-8100
All of the following
Intel Core I3-8100h Firmware
Intel Core I3-8100h
All of the following
Intel Core I3-8100t Firmware
Intel Core I3-8100t
All of the following
Intel Core I3-8109u Firmware
Intel Core I3-8109u
All of the following
Intel Core I3-8120 Firmware
Intel Core I3-8120
All of the following
Intel Core I3-8130u Firmware
Intel Core I3-8130u
All of the following
Intel Core I3-8145u Firmware
Intel Core I3-8145u
All of the following
Intel Core I3-8300 Firmware
Intel Core I3-8300
All of the following
Intel Core I3-8300t Firmware
Intel Core I3-8300t
All of the following
Intel Core I3-8350k Firmware
Intel Core I3-8350k
All of the following
Intel Core I5-6200u Firmware
Intel Core I5-6200u
All of the following
Intel Core I5-6210u Firmware
Intel Core I5-6210u
All of the following
Intel Core I5-6260u Firmware
Intel Core I5-6260u
All of the following
Intel Core I5-6267u Firmware
Intel Core I5-6267u
All of the following
Intel Core I5-6287u Firmware
Intel Core I5-6287u
All of the following
Intel Core I5-6300hq Firmware
Intel Core I5-6300hq
All of the following
Intel Core I5-6300u Firmware
Intel Core I5-6300u
All of the following
Intel Core I5-6310u Firmware
Intel Core I5-6310u
All of the following
Intel Core I5-6350hq Firmware
Intel Core I5-6350hq
All of the following
Intel Core I5-6360u Firmware
Intel Core I5-6360u
All of the following
Intel Core I5-6400 Firmware
Intel Core I5-6400
All of the following
Intel Core I5-6400t Firmware
Intel Core I5-6400t
All of the following
Intel Core I5-6440eq Firmware
Intel Core I5-6440eq
All of the following
Intel Core I5-6440hq Firmware
Intel Core I5-6440hq
All of the following
Intel Core I5-6442eq Firmware
Intel Core I5-6442eq
All of the following
Intel Core I5-6500 Firmware
Intel Core I5-6500
All of the following
Intel Core I5-6500t Firmware
Intel Core I5-6500t
All of the following
Intel Core I5-6500te Firmware
Intel Core I5-6500te
All of the following
Intel Core I5-6600 Firmware
Intel Core I5-6600
All of the following
Intel Core I5-6600k Firmware
Intel Core I5-6600k
All of the following
Intel Core I5-6600t Firmware
Intel Core I5-6600t
All of the following
Intel Core I5-8200y Firmware
Intel Core I5-8200y
All of the following
Intel Core I5-8210y Firmware
Intel Core I5-8210y
All of the following
Intel Core I5-8250u Firmware
Intel Core I5-8250u
All of the following
Intel Core I5-8259u Firmware
Intel Core I5-8259u
All of the following
Intel Core I5-8265u Firmware
Intel Core I5-8265u
All of the following
Intel Core I5-8269u Firmware
Intel Core I5-8269u
All of the following
Intel Core I5-8300h Firmware
Intel Core I5-8300h
All of the following
Intel Core I5-8305g Firmware
Intel Core I5-8305g
All of the following
Intel Core I5-8310y Firmware
Intel Core I5-8310y
All of the following
Intel Core I5-8350u Firmware
Intel Core I5-8350u
All of the following
Intel Core I5-8365u Firmware
Intel Core I5-8365u
All of the following
Intel Core I5-8400 Firmware
Intel Core I5-8400
All of the following
Intel Core I5-8400b Firmware
Intel Core I5-8400b
All of the following
Intel Core I5-8400h Firmware
Intel Core I5-8400h
All of the following
Intel Core I5-8400t Firmware
Intel Core I5-8400t
All of the following
Intel Core I5-8420 Firmware
Intel Core I5-8420
All of the following
Intel Core I5-8420t Firmware
Intel Core I5-8420t
All of the following
Intel Core I5-8500 Firmware
Intel Core I5-8500
All of the following
Intel Core I5-8500b Firmware
Intel Core I5-8500b
All of the following
Intel Core I5-8500t Firmware
Intel Core I5-8500t
All of the following
Intel Core I5-8550 Firmware
Intel Core I5-8550
All of the following
Intel Core I5-8550u Firmware
Intel Core I5-8550u
All of the following
Intel Core I5-8600 Firmware
Intel Core I5-8600
All of the following
Intel Core I5-8600k Firmware
Intel Core I5-8600k
All of the following
Intel Core I5-8600t Firmware
Intel Core I5-8600t
All of the following
Intel Core I5-8650 Firmware
Intel Core I5-8650
All of the following
Intel Core I5-8650k Firmware
Intel Core I5-8650k
All of the following
Intel Core I7-8500y Firmware
Intel Core I7-8500y
All of the following
Intel Core I7-8510y Firmware
Intel Core I7-8510y
All of the following
Intel Core I7-8557u Firmware
Intel Core I7-8557u
All of the following
Intel Core I7-8560u Firmware
Intel Core I7-8560u
All of the following
Intel Core I7-8565u Firmware
Intel Core I7-8565u
All of the following
Intel Core I7-8569u Firmware
Intel Core I7-8569u
All of the following
Intel Core I7-8665u Firmware
Intel Core I7-8665u
All of the following
Intel Core I7-8670 Firmware
Intel Core I7-8670
All of the following
Intel Core I7-8670t Firmware
Intel Core I7-8670t
All of the following
Intel Core I7-8700 Firmware
Intel Core I7-8700
All of the following
Intel Core I7-8700t Firmware
Intel Core I7-8700t
All of the following
Intel Core I7-8750hf Firmware
Intel Core I7-8750hf
All of the following
Intel Core I9-8950hk Firmware
Intel Core I9-8950hk
All of the following
Intel Core M3-6y30 Firmware
Intel Core M3-6y30
All of the following
Intel Core M3-8100y Firmware
Intel Core M3-8100y
All of the following
Intel Core M5-6y54 Firmware
Intel Core M5-6y54
All of the following
Intel Core M5-6y57 Firmware
Intel Core M5-6y57
All of the following
Intel Core M7-6y75 Firmware
Intel Core M7-6y75
debian/linux
5.10.223-15.10.262-16.1.176-16.1.180-16.12.94-16.12.101-17.1.7-17.1.8-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1160.80.1.rt56.1225.el7
  2. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1160.80.1.el7
  3. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-372.32.1.rt7.189.el8_6
  4. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-372.32.1.el8_6
  5. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:5.14.0-162.6.1.el9_1
  6. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:5.14.0-162.6.1.rt21.168.el9_1
  7. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:5.14.0-70.36.1.el9_0
  8. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:5.14.0-70.36.1.rt21.108.el9_0
  9. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.262-1Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.101-1Fixed in 7.1.7-1Fixed in 7.1.8-1
  10. Configuration

    Enable IBRS on affected Skylake generation processors.

    Intel Skylake generation processors IBRS = enabled
  11. Configuration

    Enable IBRS on affected Intel microprocessor generations 6 to 8 processors.

    Intel microprocessor generations 6 to 8 IBRS = enabled

Event History

Jul 1, 2022
Data Sourced
via Red Hat·02:46 PM
DescriptionSeverityAffected Software
Jul 12, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software
Jun 22, 2026
Data Sourced
via Launchpad·11:09 AM
Description
Aug 12, 2026
Data Sourced
via Debian·12:27 PM
DescriptionAffected Software
Aug 15, 2026
Data Sourced
via Ubuntu·12:29 PM
RemedyDescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2022-29901?

CVE-2022-29901 has been classified with a high severity level due to the potential for information disclosure in affected Intel processors.

2

How do I fix CVE-2022-29901?

To mitigate CVE-2022-29901, users should update their systems to the latest provided kernel versions as specified in the vulnerability advisory.

3

What Intel processors are affected by CVE-2022-29901?

CVE-2022-29901 affects certain Intel processors from generations 6 to 8, including various Core i7, i5, and i3 models.

4

Can CVE-2022-29901 be exploited locally?

Yes, CVE-2022-29901 can be exploited by an authorized user with local access, potentially leading to information disclosure.

5

What should I do if my system is vulnerable to CVE-2022-29901?

If your system is vulnerable to CVE-2022-29901, immediately apply the necessary software updates and security patches provided by your operating system vendor.

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