Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2021-33909 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html	CVE	ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html	CVE	Third Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html	CVE	Third Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html	CVE	Third Party AdvisoryVDB Entry
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4	CVE	Mailing ListPatchVendor Advisory
https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b	CVE	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html	CVE	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html	CVE	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html	CVE	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/	CVE
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015	CVE	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210819-0004/	CVE	Third Party Advisory
https://www.debian.org/security/2021/dsa-4941	CVE	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/07/20/1	CVE	ExploitMailing ListThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	CVE	PatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/07/22/7	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/25/10	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/2	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/4	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/21/1	CVE	Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html	[email protected]	ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html	[email protected]	Third Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html	[email protected]	Third Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html	[email protected]	Third Party AdvisoryVDB Entry
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4	[email protected]	Mailing ListPatchVendor Advisory
https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b	[email protected]	PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html	[email protected]	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html	[email protected]	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html	[email protected]	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/	[email protected]
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015	[email protected]	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210819-0004/	[email protected]	Third Party Advisory
https://www.debian.org/security/2021/dsa-4941	[email protected]	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/07/20/1	[email protected]	ExploitMailing ListThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	[email protected]	PatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/07/22/7	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/25/10	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/2	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/4	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/21/1	[email protected]	Mailing ListThird Party Advisory

see all 40 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	[email protected]
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 3.12.43, < 3.13 >= 3.16, < 4.4.276 >= 4.5, < 4.9.276 >= 4.10, < 4.14.240 >= 4.15, < 4.19.198
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.
fedoraproject fedora	34
CPE cpe:2.3:o:fedoraproject:fedora:34:::::::* Remediation No remediation found in references.
debian debian linux	9.0 10.0
CPE cpe:2.3:o:debian:debian_linux:9.0:::::::* cpe:2.3:o:debian:debian_linux:10.0:::::::* Remediation No remediation found in references.
netapp hci management node	All versions
CPE cpe:2.3:a:netapp:hci_management_node:-:::::::* Remediation No remediation found in references.
netapp solidfire	All versions
CPE cpe:2.3:a:netapp:solidfire:-:::::::* Remediation No remediation found in references.
oracle communications session border controller	8.2 8.3 8.4 9.0
CPE cpe:2.3:a:oracle:communications_session_border_controller:8.2:::::::* cpe:2.3:a:oracle:communications_session_border_controller:8.3:::::::* cpe:2.3:a:oracle:communications_session_border_controller:8.4:::::::* cpe:2.3:a:oracle:communications_session_border_controller:9.0:::::::* Remediation No remediation found in references.
sonicwall sma1000 firmware	<= 12.4.2-02044
CPE cpe:2.3:o:sonicwall:sma1000_firmware:::::::: Remediation No remediation found in references.
sonicwall sma1000	All versions
CPE cpe:2.3:h:sonicwall:sma1000:-:::::::* Remediation No remediation found in references.

Change History

24 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Mar 1, 2023	Reanalysis	[email protected]
Dec 9, 2022	Modified Analysis	[email protected]
Aug 10, 2022	CVE Modified	[email protected]
Mar 1, 2022	Modified Analysis	[email protected]
Feb 7, 2022	CVE Modified	[email protected]
Jan 6, 2022	CVE Modified	[email protected]
Oct 18, 2021	Modified Analysis	[email protected]
Sep 21, 2021	CVE Modified	[email protected]
Sep 17, 2021	CVE Modified	[email protected]
Sep 17, 2021	CVE Modified	[email protected]
Sep 14, 2021	CVE Modified	[email protected]
Aug 26, 2021	CVE Modified	[email protected]
Aug 19, 2021	CVE Modified	[email protected]
Jul 29, 2021	Initial Analysis	[email protected]
Jul 26, 2021	CVE Modified	[email protected]
Jul 23, 2021	CVE Modified	[email protected]
Jul 22, 2021	CVE Modified	[email protected]
Jul 21, 2021	CVE Modified	[email protected]
Jul 21, 2021	CVE Modified	[email protected]
Jul 20, 2021	CVE Modified	[email protected]

CVE-2021-33909 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

Change History

QUICK INFO