CVE-2022-49203
published 2025-02-26CVE-2022-49203: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix double free during GPU reset on DC streams [Why] The issue only occurs…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
13.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix double free during GPU reset on DC streams
[Why]
The issue only occurs during the GPU reset code path.
We first backup the current state prior to commiting 0 streams
internally from DM to DC. This state backup contains valid link
encoder assignments.
DC will clear the link encoder assignments as part of current state
(but not the backup, since it was a copied before the commit) and
free the extra stream reference it held.
DC requires that the link encoder assignments remain cleared/invalid
prior to commiting. Since the backup still has valid assignments we
call the interface post reset to clear them. This routine also
releases the extra reference that the link encoder interface held -
resulting in a double free (and eventually a NULL pointer dereference).
[How]
We'll have to do a full DC commit anyway after GPU reset because
the stream count previously went to 0.
We don't need to retain the assignment that we had backed up, so
just copy off of the now clean current state assignment after the
reset has occcurred with the new link_enc_cfg_copy() interface.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.17.3-1 (bookworm) | linux 5.17.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 6d63fcc2a334f7bd15e4e9b1db50a19335d2af4f < bbfcdd6289ba6f00f0cd7d496946dce9f6c600ac | bbfcdd6289ba6f00f0cd7d496946dce9f6c600ac |
| linux | linux | >= 6d63fcc2a334f7bd15e4e9b1db50a19335d2af4f < 32685b32d825ca08c5dec826477332df886c4743 | 32685b32d825ca08c5dec826477332df886c4743 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 5.17 < 5.17.2 | 5.17.2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: drm/amd/display: Fix double free during GPU reset on DC streams
vendor_redhat·2025-02-26·CVSS 5.5
CVE-2022-49203 [MEDIUM] CWE-415 kernel: drm/amd/display: Fix double free during GPU reset on DC streams
kernel: drm/amd/display: Fix double free during GPU reset on DC streams
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix double free during GPU reset on DC streams
[Why]
The issue only occurs during the GPU reset code path.
We first backup the current state prior to commiting 0 streams
internally from DM to DC. This state backup contains valid link
encoder assignments.
DC will clear the link encoder assignments as part of current state
(but not the backup, since it was a copied before the commit) and
free the extra stream reference it held.
DC requires that the link encoder assignments remain cleared/invalid
prior to commiting. Since the backup still has valid assignments we
call the interface post reset to clear them. This routine also
releases the
Debian
CVE-2022-49203: linux - In the Linux kernel, the following vulnerability has been resolved: drm/amd/dis...
vendor_debian·2022·CVSS 5.5
CVE-2022-49203 [MEDIUM] CVE-2022-49203: linux - In the Linux kernel, the following vulnerability has been resolved: drm/amd/dis...
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix double free during GPU reset on DC streams [Why] The issue only occurs during the GPU reset code path. We first backup the current state prior to commiting 0 streams internally from DM to DC. This state backup contains valid link encoder assignments. DC will clear the link encoder assignments as part of current state (but not the backup, since it was a copied before the commit) and free the extra stream reference it held. DC requires that the link encoder assignments remain cleared/invalid prior to commiting. Since the backup still has valid assignments we call the interface post reset to clear them. This routine also releases the extra reference that the link encoder interface held - resulting in a do
GHSA
GHSA-v846-qx2m-x9p5: In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix double free during GPU reset on DC streams
[Why]
The issue
ghsa_unreviewed·2025-03-18
CVE-2022-49203 [MEDIUM] CWE-415 GHSA-v846-qx2m-x9p5: In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix double free during GPU reset on DC streams
[Why]
The issue
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix double free during GPU reset on DC streams
[Why]
The issue only occurs during the GPU reset code path.
We first backup the current state prior to commiting 0 streams
internally from DM to DC. This state backup contains valid link
encoder assignments.
DC will clear the link encoder assignments as part of current state
(but not the backup, since it was a copied before the commit) and
free the extra stream reference it held.
DC requires that the link encoder assignments remain cleared/invalid
prior to commiting. Since the backup still has valid assignments we
call the interface post reset to clear them. This routine also
releases the extra reference that the link encoder interface held -
resulting in
OSV
CVE-2022-49203: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix double free during GPU reset on DC streams [Why] The issue on
osv·2025-02-26·CVSS 5.5
CVE-2022-49203 [MEDIUM] CVE-2022-49203: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix double free during GPU reset on DC streams [Why] The issue on
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix double free during GPU reset on DC streams [Why] The issue only occurs during the GPU reset code path. We first backup the current state prior to commiting 0 streams internally from DM to DC. This state backup contains valid link encoder assignments. DC will clear the link encoder assignments as part of current state (but not the backup, since it was a copied before the commit) and free the extra stream reference it held. DC requires that the link encoder assignments remain cleared/invalid prior to commiting. Since the backup still has valid assignments we call the interface post reset to clear them. This routine also releases the extra reference that the link encoder interface held - resulting in a do
No detection rules found.
No public exploits indexed.
2025-02-26
Published