Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.10.11 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 32 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/01/29/4Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/29/5Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/01/4ExploitMailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04Mailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12Mailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=21Mailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34Mailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6cMailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5Mailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c6Mailing ListPatchVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2Mailing ListPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2021-3347?
CVE-2021-3347 is a vulnerability with a CVSS score of 7.8 (HIGH). 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-34b1a1ce14...
How severe is CVE-2021-3347?
CVE-2021-3347 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3347?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Fedoraproject Fedora.