Vulnerability-Lookup

SUSE-SU-2021:2487-1

Vulnerability from csaf_suse - Published: 2021-07-27 15:25 - Updated: 2026-09-20 14:02

Summary

Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

Severity

Important

Notes

Title of the patch: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

Description of the patch: This update for the Linux Kernel 5.3.18-57 fixes several issues. The following security issues were fixed: - CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to andobtain full root privileges. (bsc#1188062) - CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116)

Patchnames: SUSE-2021-2487,SUSE-SLE-Module-Live-Patching-15-SP2-2021-2487,SUSE-SLE-Module-Live-Patching-15-SP3-2021-2484,SUSE-SLE-Module-Live-Patching-15-SP3-2021-2485,SUSE-SLE-Module-Live-Patching-15-SP3-2021-2486

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 12 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_70-default-0:2-2.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_70-default-0:2-2.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_70-default-0:2-2.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-0:4-3.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-0:4-3.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-57-default-0:4-3.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-59_13-default-0:2-2.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-59_13-default-0:2-2.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-59_13-default-0:2-2.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-59_5-default-0:2-2.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-59_5-default-0:2-2.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-59_5-default-0:2-2.1.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2021-33909

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 12 products, the same list as for CVE-2021-22555

Threats

Impact important

References

18 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1188117	self
https://bugzilla.suse.com/1188257	self
https://www.suse.com/security/cve/CVE-2021-22555/	self
https://www.suse.com/security/cve/CVE-2021-33909/	self
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-2021-33909	external
https://bugzilla.suse.com/1188062	external
https://bugzilla.suse.com/1188063	external
https://bugzilla.suse.com/1188257	external
https://bugzilla.suse.com/1189302	external
https://bugzilla.suse.com/1190859	external

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 CNA under the Google root

CNA scorecard C 75/100 over 33 records in the last 180 days details

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-2021-33909 (GCVE-0-2021-33909)

Vulnerability from cvelistv5 – Published: 2021-07-20 18:01 – Updated: 2024-08-04 00:05

Summary

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2316 records in the last 180 days details

References

20 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4941	vendor-advisoryx_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://www.openwall.com/lists/oss-security/2021/07/22/7	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/0…	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/09/17/2	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/09/17/4	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/09/21/1	mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2021/…	x_refsource_MISC
https://github.com/torvalds/linux/commit/8cae8cd8…	x_refsource_CONFIRM
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_CONFIRM
http://packetstormsecurity.com/files/163621/Sequo…	x_refsource_MISC
http://packetstormsecurity.com/files/163671/Kerne…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021081…	x_refsource_CONFIRM
http://packetstormsecurity.com/files/164155/Kerne…	x_refsource_MISC
http://packetstormsecurity.com/files/165477/Kerne…	x_refsource_MISC
https://psirt.global.sonicwall.com/vuln-detail/SN…	x_refsource_CONFIRM

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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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SUSE-SU-2021:2487-1

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

CVE-2021-33909 (GCVE-0-2021-33909)

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour