CVE-2021-3347
Detail
Modified After Enrichment
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
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 Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
References to Advisories, Solutions, and Tools
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URL
Source(s)
Tag(s)
http://www.openwall.com/lists/oss-security/2021/01/29/4
CVE, MITRE
Mailing List
Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/29/5
CVE, MITRE
Mailing List
Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/01/4
CVE, MITRE
Exploit
Mailing List
Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2
CVE, MITRE
Mailing List
Patch
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
CVE, MITRE
Mailing List
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
CVE, MITRE
Mailing List
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
CVE, MITRE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/
CVE, MITRE
https://security.netapp.com/advisory/ntap-20210304-0005/
CVE, MITRE
Third Party Advisory
https://www.debian.org/security/2021/dsa-4843
CVE, MITRE
Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/29/1
CVE, MITRE
Mailing List
Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/29/3
CVE, MITRE
Mailing List
Third Party Advisory
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-416
Use After Free
NIST  
CISA-ADP  
Change History
16 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 12:04:58 AM
Action
Type
Old Value
New Value
Added
SSVC
{"timestamp":"2025-07-24T03:55:32.320311Z","id":"CVE-2021-3347","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
CVE Modified by MITRE
6/17/2026 12:04:58 AM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]
CVE Modified by CISA-ADP
2/25/2026 1:16:53 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CWE
CWE-416
CVE Modified by CVE
11/21/2024 1:21:21 AM
Action
Type
Old Value
New Value
Added
Reference
http://www.openwall.com/lists/oss-security/2021/01/29/4
Added
Reference
http://www.openwall.com/lists/oss-security/2021/01/29/5
Added
Reference
http://www.openwall.com/lists/oss-security/2021/02/01/4
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120
Added
Reference
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2
Added
Reference
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
Added
Reference
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/
Added
Reference
https://security.netapp.com/advisory/ntap-20210304-0005/
Added
Reference
https://www.debian.org/security/2021/dsa-4843
Added
Reference
https://www.openwall.com/lists/oss-security/2021/01/29/1
Added
Reference
https://www.openwall.com/lists/oss-security/2021/01/29/3
CVE Modified by MITRE
5/14/2024 5:24:14 AM
Action
Type
Old Value
New Value
CVE Modified by MITRE
11/06/2023 10:37:58 PM
Action
Type
Old Value
New Value
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/ [No types assigned]
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/ [No types assigned]
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/
Modified Analysis by NIST
3/15/2021 1:44:45 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
OR
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/ Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/ Mailing List, Third Party Advisory
Changed
Reference Type
https://security.netapp.com/advisory/ntap-20210304-0005/ No Types Assigned
https://security.netapp.com/advisory/ntap-20210304-0005/ Third Party Advisory
CVE Modified by MITRE
3/09/2021 4:15:15 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html [No Types Assigned]
CVE Modified by MITRE
3/04/2021 8:15:17 AM
Action
Type
Old Value
New Value
Added
Reference
https://security.netapp.com/advisory/ntap-20210304-0005/ [No Types Assigned]
CVE Modified by MITRE
2/12/2021 5:15:13 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html [No Types Assigned]
CVE Modified by MITRE
2/05/2021 9:15:19 AM
Action
Type
Old Value
New Value
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/ [No Types Assigned]
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/ [No Types Assigned]
Initial Analysis by NIST
2/04/2021 10:02:01 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V2
NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Added
CWE
NIST CWE-416
Added
CPE Configuration
OR
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.10.11
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2021/01/29/4 No Types Assigned
http://www.openwall.com/lists/oss-security/2021/01/29/4 Mailing List, Third Party Advisory
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2021/01/29/5 No Types Assigned
http://www.openwall.com/lists/oss-security/2021/01/29/5 Mailing List, Third Party Advisory
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2021/02/01/4 No Types Assigned
http://www.openwall.com/lists/oss-security/2021/02/01/4 Exploit, Mailing List, Third Party Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307 No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307 Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9 No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9 Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697 No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697 Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7 No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7 Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120 No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120 Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2 No Types Assigned
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2 Mailing List, Patch, Vendor Advisory
Changed
Reference Type
https://www.debian.org/security/2021/dsa-4843 No Types Assigned
https://www.debian.org/security/2021/dsa-4843 Third Party Advisory
Changed
Reference Type
https://www.openwall.com/lists/oss-security/2021/01/29/1 No Types Assigned
https://www.openwall.com/lists/oss-security/2021/01/29/1 Mailing List, Third Party Advisory
Changed
Reference Type
https://www.openwall.com/lists/oss-security/2021/01/29/3 No Types Assigned
https://www.openwall.com/lists/oss-security/2021/01/29/3 Mailing List, Third Party Advisory
CVE Modified by MITRE
2/02/2021 7:15:14 AM
Action
Type
Old Value
New Value
Added
Reference
https://www.debian.org/security/2021/dsa-4843 [No Types Assigned]
CVE Modified by MITRE
2/01/2021 5:15:14 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.openwall.com/lists/oss-security/2021/02/01/4 [No Types Assigned]
CVE Modified by MITRE
1/29/2021 2:15:14 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.openwall.com/lists/oss-security/2021/01/29/4 [No Types Assigned]
Added
Reference
http://www.openwall.com/lists/oss-security/2021/01/29/5 [No Types Assigned]
CVE Modified by MITRE
1/29/2021 1:15:12 PM
Action
Type
Old Value
New Value
Changed
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, aka CID-34b1a1ce1458.
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.
Added
Reference
https://www.openwall.com/lists/oss-security/2021/01/29/1 [No Types Assigned]
Added
Reference
https://www.openwall.com/lists/oss-security/2021/01/29/3 [No Types Assigned]
Quick Info
CVE Dictionary Entry: CVE-2021-3347 NVD
Published Date: 01/29/2021 NVD
Last Modified: 06/17/2026
Source: MITRE