Bug 2120146 (CVE-2022-2977) - CVE-2022-2977 kernel: use-after-free Read in put_device (/dev/vtpmx)
Summary: CVE-2022-2977 kernel: use-after-free Read in put_device (/dev/vtpmx)
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2022-2977
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2120164
Blocks: 2058544 2122154
TreeView+ depends on / blocked
 
Reported: 2022-08-22 00:56 UTC by Wade Mealing
Modified: 2022-12-08 09:10 UTC (History)
52 users (show)

Fixed In Version: kernel-5.18-rc1
Clone Of:
Environment:
Last Closed: 2022-09-02 13:55:35 UTC
Embargoed:

Attachments (Terms of Use)

Description Wade Mealing 2022-08-22 00:56:45 UTC 
A flaw was found in the kernels implementation of proxied virtualized TPM devices.  On a system where virtualized TPM devices are configured (this is not the default) a local attacker can create a use-after-free and create a situation where it may be possible to escalate privileges on the system.

References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d8e7007dc7c4d7c8366739bbcd3f5e51dcd470f
Comment 4 Wade Mealing 2022-08-22 03:14:41 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2120164]
Comment 5 Justin M. Forbes 2022-08-22 21:08:46 UTC 
This was fixed for Fedora with the 5.18 stable rebases.
Comment 9 Product Security DevOps Team 2022-09-02 13:55:30 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-2977
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