CVE-2021-3492: (Pwn2Own) Canonical Ubuntu ShiftFS File System Double Free Privilege Escalation Vulnerability
First published: Sat Apr 17 2021(Updated: )
Last updated 29 November 2024
Credit: security@ubuntu.com security@ubuntu.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Canonical Ubuntu Linux | <18.04 | |
| Canonical Ubuntu Linux | >=18.04.1<20.04 | |
| Canonical Ubuntu Linux | <20.10 | |
| Canonical Ubuntu | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- http://packetstormsecurity.com/files/162614/Kernel-Live-Patch-Security-Notice-LSN-0077-1.html
- https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=25c891a949bf918b59cbc6e4932015ba4c35c333
- https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=8fee52ab9da87d82bc6de9ebb3480fff9b4d53e6
- https://ubuntu.com/security/notices/USN-4917-1
- https://www.openwall.com/lists/oss-security/2021/04/16/2
- https://www.zerodayinitiative.com/advisories/ZDI-21-422/
- https://launchpad.net/bugs/cve/CVE-2021-3492
- https://ubuntu.com/security/CVE-2021-3492
- https://www.openwall.com/lists/oss-security/2021/04/16/1
- https://security-tracker.debian.org/tracker/CVE-2021-3492
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3492
- https://nvd.nist.gov/vuln/detail/CVE-2021-3492
- collector/nvd-index
- agent/type
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-422
- alias/ZDI-CAN-13562
- alias/CVE-2021-3492
- agent/software-canonical-lookup
- agent/weakness
- agent/title
- agent/severity
- agent/remedy
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/first-publish-date
- collector/usn-cve
- source/Ubuntu
- agent/tags
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/18.04.1
- canonical/canonical ubuntu
- package-manager/debian