Bug 2077560 (CVE-2022-1419) - CVE-2022-1419 kernel: a concurrency use-after-free in vgem_gem_dumb_create
Summary: CVE-2022-1419 kernel: a concurrency use-after-free in vgem_gem_dumb_create
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-1419
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2090708
Blocks: 2077551 2090709
TreeView+ depends on / blocked
 
Reported: 2022-04-21 15:05 UTC by Marian Rehak
Modified: 2023-03-14 18:08 UTC (History)
48 users (show)

Fixed In Version: kernel 5.6 rc2
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Environment:
Last Closed: 2022-05-29 20:31:33 UTC
Embargoed:

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Description Marian Rehak 2022-04-21 15:05:24 UTC 
The root cause of this vulnerability is that the ioctl$DRM_IOCTL_MODE_DESTROY_DUMB can decrease refcount of *drm_vgem_gem_object *(created in *vgem_gem_dumb_create*) concurrently, and  *vgem_gem_dumb_create *will access the freed drm_vgem_gem_object.
Comment 1 Marian Rehak 2022-05-26 12:13:39 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2090708]
Comment 5 Rohit Keshri 2022-05-29 16:44:46 UTC 
There was no shipped kernel version that was seen affected by this problem. These files are not built in our source code.
Comment 6 Product Security DevOps Team 2022-05-29 20:31:29 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-2022-1419
Comment 7 Justin M. Forbes 2022-05-30 16:12:04 UTC 
This was fixed for Fedora with the 5.5.5 stable kernel updates.
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