Vulnerability Description
A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.
CVSS Score
5.1
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.6.2 |
Related Weaknesses (CWE)
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2PatchRelease NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caMailing ListPatchVendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2PatchRelease NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caMailing ListPatchVendor Advisory
FAQ
What is CVE-2020-36557?
CVE-2020-36557 is a vulnerability with a CVSS score of 5.1 (MEDIUM). A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.
How severe is CVE-2020-36557?
CVE-2020-36557 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-36557?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.