CVE-2022-49827

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49827
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49827.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49827
Related
Published
2025-05-01T15:16:06Z
Modified
2025-05-02T14:45:48.936666Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

drm: Fix potential null-ptr-deref in drmvblankdestroy_worker()

drmvblankinit() call drmmaddactionorreset() with drmvblankinitrelease() as action. If _drmmaddaction() failed, will directly call drmvblankinitrelease() with the vblank whose worker is NULL. As the resule, a null-ptr-deref will happen in kthreaddestroyworker(). Add the NULL check before calling drmvblankdestroyworker().

BUG: null-ptr-deref KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] CPU: 5 PID: 961 Comm: modprobe Not tainted 6.0.0-11331-gd465bff130bf-dirty RIP: 0010:kthreaddestroyworker+0x25/0xb0 Call Trace: <TASK> drmvblankinitrelease+0x124/0x220 [drm] ? drmcrtcvblankrestore+0x8b0/0x8b0 [drm] _drmmaddactionorreset+0x41/0x50 [drm] drmvblankinit+0x282/0x310 [drm] vkmsinit+0x35f/0x1000 [vkms] ? 0xffffffffc4508000 ? lockisheldtype+0xd7/0x130 ? _kmemcacheallocnode+0x1c2/0x2b0 ? lockisheldtype+0xd7/0x130 ? 0xffffffffc4508000 dooneinitcall+0xd0/0x4f0 ... dosyscall64+0x35/0x80 entrySYSCALL64afterhwframe+0x46/0xb0

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.158-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.10-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.0.10-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}