Vulnerability Details : CVE-2021-47534
In the Linux kernel, the following vulnerability has been resolved:
drm/vc4: kms: Add missing drm_crtc_commit_put
Commit 9ec03d7f1ed3 ("drm/vc4: kms: Wait on previous FIFO users before a
commit") introduced a global state for the HVS, with each FIFO storing
the current CRTC commit so that we can properly synchronize commits.
However, the refcounting was off and we thus ended up leaking the
drm_crtc_commit structure every commit. Add a drm_crtc_commit_put to
prevent the leakage.
Products affected by CVE-2021-47534
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47534
0.03%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 4 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47534
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.1
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |
0.5
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-11-07 |
References for CVE-2021-47534
-
https://git.kernel.org/stable/c/049cfff8d53a30cae3349ff71a4c01b7d9981bc2
drm/vc4: kms: Add missing drm_crtc_commit_put - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/53f9601e908d42481addd67cdb01a9288c611124
drm/vc4: kms: Add missing drm_crtc_commit_put - kernel/git/stable/linux.git - Linux kernel stable treePatch
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