CVE-2021-3347

high

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.

References

http://www.openwall.com/lists/oss-security/2021/01/29/4

http://www.openwall.com/lists/oss-security/2021/01/29/5

http://www.openwall.com/lists/oss-security/2021/02/01/4

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2

https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html

https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/

https://lists.fedoraproject.org/archives/list/[email protected]/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/

https://security.netapp.com/advisory/ntap-20210304-0005/

https://www.debian.org/security/2021/dsa-4843

https://www.openwall.com/lists/oss-security/2021/01/29/1

https://www.openwall.com/lists/oss-security/2021/01/29/3

Details

Source: MITRE

Published: 2021-01-29

Updated: 2021-03-15

Type: CWE-416

Risk Information

CVSS v2

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH