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CVE-2021-3347 Details

Description

An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.

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

CNA: CISA-ADPCVSS-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)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120	CVE	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2	CVE	Mailing ListPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html	CVE	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html	CVE	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/	CVE
https://security.netapp.com/advisory/ntap-20210304-0005/	CVE	Third Party Advisory
https://www.debian.org/security/2021/dsa-4843	CVE	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/29/1	CVE	Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/29/3	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/29/4	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/29/5	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/01/4	CVE	ExploitMailing ListThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120	[email protected]	Mailing ListPatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2	[email protected]	Mailing ListPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html	[email protected]	Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html	[email protected]	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/	[email protected]
https://security.netapp.com/advisory/ntap-20210304-0005/	[email protected]	Third Party Advisory
https://www.debian.org/security/2021/dsa-4843	[email protected]	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/29/1	[email protected]	Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/29/3	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/29/4	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/29/5	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/01/4	[email protected]	ExploitMailing ListThird Party Advisory

see all 38 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]
CWE-416	Use After Free	CISA-ADP

Affected Products

Product	Versions
linux linux kernel	<= 5.10.11
CPE cpe:2.3:o:linux:linux_kernel:::::::: 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.
fedoraproject fedora	32 33
CPE cpe:2.3:o:fedoraproject:fedora:32:::::::* cpe:2.3:o:fedoraproject:fedora:33:::::::* Remediation No remediation found in references.

Change History

16 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Feb 25, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Mar 15, 2021	Modified Analysis	[email protected]
Mar 9, 2021	CVE Modified	[email protected]
Mar 4, 2021	CVE Modified	[email protected]
Feb 12, 2021	CVE Modified	[email protected]
Feb 5, 2021	CVE Modified	[email protected]
Feb 4, 2021	Initial Analysis	[email protected]
Feb 2, 2021	CVE Modified	[email protected]
Feb 1, 2021	CVE Modified	[email protected]
Jan 29, 2021	CVE Modified	[email protected]
Jan 29, 2021	CVE Modified	[email protected]

CVE-2021-3347 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

CPE

Remediation

CPE

Remediation

CPE

Remediation

Change History

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