Vulnerability-Lookup

RHSA-2021:3327

Vulnerability from csaf_opensuse - Published: 2021-08-31 00:00 - Updated: 2026-09-20 11:16

Summary

security update for kernel

Severity

Important

Notes

Title of the patch: security update for kernel

Description of the patch: This security update provides a functional equivalent of RHSA-2021:3327. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2021:3327.

Patchnames: RHSA-2021:3327

CVE-2020-27777

6.4 (Medium)


                
                  CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 13 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 7:bpftool-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-abi-whitelists-0:3.10.0-1160.41.1.el7.noarch	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-debug-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-debug-devel-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-devel-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-doc-0:3.10.0-1160.41.1.el7.noarch	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-headers-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-tools-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-tools-libs-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:kernel-tools-libs-devel-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:perf-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 7:python-perf-0:3.10.0-1160.41.1.el7.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2021-22555

7.8 (High)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 13 products, the same list as for CVE-2020-27777

Threats

Impact important

CVE-2021-29154

7 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 13 products, the same list as for CVE-2020-27777

Threats

Impact important

CVE-2021-29650

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Recommended 13 products, the same list as for CVE-2020-27777

Threats

Impact moderate

CVE-2021-32399

7.4 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 13 products, the same list as for CVE-2020-27777

Threats

Impact important

References

29 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2020-27777/	self
https://www.suse.com/security/cve/CVE-2021-22555/	self
https://www.suse.com/security/cve/CVE-2021-29154/	self
https://www.suse.com/security/cve/CVE-2021-29650/	self
https://www.suse.com/security/cve/CVE-2021-32399/	self
https://www.suse.com/security/cve/CVE-2020-27777	external
https://bugzilla.suse.com/1179107	external
https://bugzilla.suse.com/1179419	external
https://bugzilla.suse.com/1200343	external
https://bugzilla.suse.com/1220060	external
https://www.suse.com/security/cve/CVE-2021-22555	external
https://bugzilla.suse.com/1188116	external
https://bugzilla.suse.com/1188117	external
https://bugzilla.suse.com/1188411	external
https://www.suse.com/security/cve/CVE-2021-29154	external
https://bugzilla.suse.com/1184391	external
https://bugzilla.suse.com/1184710	external
https://bugzilla.suse.com/1186408	external
https://www.suse.com/security/cve/CVE-2021-29650	external
https://bugzilla.suse.com/1184208	external
https://www.suse.com/security/cve/CVE-2021-32399	external
https://bugzilla.suse.com/1184611	external
https://bugzilla.suse.com/1185898	external
https://bugzilla.suse.com/1185899	external
https://bugzilla.suse.com/1196174	external
https://bugzilla.suse.com/1200084	external
https://bugzilla.suse.com/1201734	external

JSON

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          "text": "A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.",
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          "title": "CVE description"
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CVE-2020-27777 (GCVE-0-2020-27777)

Vulnerability from cvelistv5 – Published: 2020-12-15 16:57 – Updated: 2024-08-04 16:25

Summary

A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.

Severity

No CVSS data available.

CWE

CWE-862

Assigner

redhat redhat root

References

4 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1900844	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2020/…	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2020/…	x_refsource_MISC
https://git.kernel.org/pub/scm/linux/kernel/git/p…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	kernel	Affected: kernel 5.10-rc1

Show details on NVD website

JSON

To clipboard

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CVE-2021-22555 (GCVE-0-2021-22555)

Vulnerability from cvelistv5 – Published: 2021-07-07 11:20 – Updated: 2025-12-30 20:32

Title

Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE

Summary

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

Severity

8.3 (High)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-04 03:55 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

Google Google root

References

10 references

URL	Tags
https://github.com/google/security-research/secur…	x_refsource_MISC
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
http://packetstormsecurity.com/files/163528/Linux…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021080…	x_refsource_CONFIRM
http://packetstormsecurity.com/files/163878/Kerne…	x_refsource_MISC
http://packetstormsecurity.com/files/164155/Kerne…	x_refsource_MISC
http://packetstormsecurity.com/files/164437/Netfi…	x_refsource_MISC
http://packetstormsecurity.com/files/165477/Kerne…	x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
n/a	Linux Kernel	Affected: 2.6.19-rc1 , < unspecified (custom)

Date Public

2021-07-04 00:00

Credits

Andy Nguyen

Show details on NVD website

JSON

To clipboard

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CVE-2021-29154 (GCVE-0-2021-29154)

Vulnerability from cvelistv5 – Published: 2021-04-08 00:00 – Updated: 2024-08-03 22:02

Summary

BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

10 references

URL	Tags
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.openwall.com/lists/oss-security/2021/…
https://news.ycombinator.com/item?id=26757760
http://packetstormsecurity.com/files/162434/Kerne…
https://security.netapp.com/advisory/ntap-2021060…
https://git.kernel.org/cgit/linux/kernel/git/torv…
https://git.kernel.org/cgit/linux/kernel/git/torv…

Date Public

2021-04-08 00:00

Show details on NVD website

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CVE-2021-29650 (GCVE-0-2021-29650)

Vulnerability from cvelistv5 – Published: 2021-03-30 20:35 – Updated: 2024-08-03 22:11

Summary

An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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CVE-2021-32399 (GCVE-0-2021-32399)

Vulnerability from cvelistv5 – Published: 2021-05-10 21:19 – Updated: 2024-08-03 23:17

Summary

net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

6 references

URL	Tags
https://github.com/torvalds/linux/commit/e2cb6b89…	x_refsource_MISC
https://git.kernel.org/cgit/linux/kernel/git/torv…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/05/11/2	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2021062…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

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To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RHSA-2021:3327

CVE-2020-27777 (GCVE-0-2020-27777)

CVE-2021-22555 (GCVE-0-2021-22555)

CVE-2021-29154 (GCVE-0-2021-29154)

CVE-2021-29650 (GCVE-0-2021-29650)

CVE-2021-32399 (GCVE-0-2021-32399)

Tags

Sightings

Nomenclature

Related by attack behaviour