CVE-2021-29266 — HIGH (7.8)

Vulnerability Description

An issue was discovered in the Linux kernel before 5.11.9. drivers/vhost/vdpa.c has a use-after-free because v->config_ctx has an invalid value upon re-opening a character device, aka CID-f6bbf0010ba0.

CVSS Score

7.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.8, < 5.10.26

Related Weaknesses (CWE)

CWE-416

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.9Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f6bbPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20210513-0005/Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.9Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f6bbPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20210513-0005/Third Party Advisory

FAQ

What is CVE-2021-29266?

CVE-2021-29266 is a vulnerability with a CVSS score of 7.8 (HIGH). An issue was discovered in the Linux kernel before 5.11.9. drivers/vhost/vdpa.c has a use-after-free because v->config_ctx has an invalid value upon re-opening a character device, aka CID-f6bbf0010ba0...

How severe is CVE-2021-29266?

CVE-2021-29266 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-2021-29266?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.