CVE-2021-47471
published 2024-05-22CVE-2021-47471: In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc.funcs may already…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
10.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
drm: mxsfb: Fix NULL pointer dereference crash on unload
The mxsfb->crtc.funcs may already be NULL when unloading the driver,
in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from
mxsfb_unload() leads to NULL pointer dereference.
Since all we care about is masking the IRQ and mxsfb->base is still
valid, just use that to clear and mask the IRQ.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.16-1 (bookworm) | linux 5.14.16-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= ae1ed0093281939b80664a687689f12436c0e874 < f40c2281d2c0674d32ba732fee45222d76495472 | f40c2281d2c0674d32ba732fee45222d76495472 |
| linux | linux | >= ae1ed0093281939b80664a687689f12436c0e874 < b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8 | b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8 |
| linux | linux | >= ae1ed0093281939b80664a687689f12436c0e874 < 3cfc183052c3dbf8eae57b6c1685dab00ed3db4a | 3cfc183052c3dbf8eae57b6c1685dab00ed3db4a |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 5.10 < 5.10.76 | 5.10.76 |
| linux | linux_kernel | >= 5.11 < 5.14.15 | 5.14.15 |
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: mxsfb: Fix NULL pointer dereference crash on unload
vendor_redhat·2024-05-22·CVSS 5.5
CVE-2021-47471 [MEDIUM] CWE-476 kernel: drm: mxsfb: Fix NULL pointer dereference crash on unload
kernel: drm: mxsfb: Fix NULL pointer dereference crash on unload
In the Linux kernel, the following vulnerability has been resolved:
drm: mxsfb: Fix NULL pointer dereference crash on unload
The mxsfb->crtc.funcs may already be NULL when unloading the driver,
in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from
mxsfb_unload() leads to NULL pointer dereference.
Since all we care about is masking the IRQ and mxsfb->base is still
valid, just use that to clear and mask the IRQ.
Statement: Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Secur
Debian
CVE-2021-47471: linux - In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb:...
vendor_debian·2021·CVSS 5.5
CVE-2021-47471 [MEDIUM] CVE-2021-47471: linux - In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb:...
In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc.funcs may already be NULL when unloading the driver, in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from mxsfb_unload() leads to NULL pointer dereference. Since all we care about is masking the IRQ and mxsfb->base is still valid, just use that to clear and mask the IRQ.
Scope: local
bookworm: resolved (fixed in 5.14.16-1)
bullseye: resolved (fixed in 5.10.84-1)
forky: resolved (fixed in 5.14.16-1)
sid: resolved (fixed in 5.14.16-1)
trixie: resolved (fixed in 5.14.16-1)
OSV
CVE-2021-47471: In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc
osv·2024-05-22·CVSS 5.5
CVE-2021-47471 [MEDIUM] CVE-2021-47471: In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc
In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc.funcs may already be NULL when unloading the driver, in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from mxsfb_unload() leads to NULL pointer dereference. Since all we care about is masking the IRQ and mxsfb->base is still valid, just use that to clear and mask the IRQ.
GHSA
GHSA-fmqm-f3m4-fg43: In the Linux kernel, the following vulnerability has been resolved:
drm: mxsfb: Fix NULL pointer dereference crash on unload
The mxsfb->crtc
ghsa_unreviewed·2024-05-22
CVE-2021-47471 [MEDIUM] CWE-476 GHSA-fmqm-f3m4-fg43: In the Linux kernel, the following vulnerability has been resolved:
drm: mxsfb: Fix NULL pointer dereference crash on unload
The mxsfb->crtc
In the Linux kernel, the following vulnerability has been resolved:
drm: mxsfb: Fix NULL pointer dereference crash on unload
The mxsfb->crtc.funcs may already be NULL when unloading the driver,
in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from
mxsfb_unload() leads to NULL pointer dereference.
Since all we care about is masking the IRQ and mxsfb->base is still
valid, just use that to clear and mask the IRQ.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/3cfc183052c3dbf8eae57b6c1685dab00ed3db4ahttps://git.kernel.org/stable/c/b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8https://git.kernel.org/stable/c/f40c2281d2c0674d32ba732fee45222d76495472https://git.kernel.org/stable/c/3cfc183052c3dbf8eae57b6c1685dab00ed3db4ahttps://git.kernel.org/stable/c/b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8https://git.kernel.org/stable/c/f40c2281d2c0674d32ba732fee45222d76495472
2024-05-22
Published