DEBIAN-CVE-2022-50511

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Source
https://security-tracker.debian.org/tracker/CVE-2022-50511
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50511.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-50511
Upstream
Published
2025-10-07T16:15:34Z
Modified
2025-10-10T18:49:05.260709Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in lib/fonts/fonts.c:139:20 left shift of 1 by 31 places cannot be represented in type 'int' <TASK> dumpstacklvl+0x7d/0xa5 dumpstack+0x15/0x1b ubsanepilogue+0xe/0x4e _ubsanhandleshiftoutofbounds+0x1e7/0x20c getdefaultfont+0x1c7/0x1f0 fbconstartup+0x347/0x3a0 dotakeoverconsole+0xce/0x270 dofbcontakeover+0xa1/0x170 dofbregistered+0x2a8/0x340 fbconfbregistered+0x47/0xe0 registerframebuffer+0x294/0x4a0 _drmfbhelperinitialconfigandunlock+0x43c/0x880 [drmkmshelper] drmfbhelperinitialconfig+0x52/0x80 [drmkmshelper] drmfbdevclienthotplug+0x156/0x1b0 [drmkmshelper] drmfbdevgenericsetup+0xfc/0x290 [drmkmshelper] bochspciprobe+0x6ca/0x772 [bochs] localpciprobe+0x4d/0xb0 pcideviceprobe+0x119/0x320 reallyprobe+0x181/0x550 _driverprobedevice+0xc6/0x220 driverprobedevice+0x32/0x100 _driverattach+0x195/0x200 busforeachdev+0xbb/0x120 driverattach+0x27/0x30 busadddriver+0x22e/0x2f0 driverregister+0xa9/0x190 _pciregisterdriver+0x90/0xa0 bochspcidriverinit+0x52/0x1000 [bochs] dooneinitcall+0x76/0x430 doinitmodule+0x61/0x28a loadmodule+0x1f82/0x2e50 _dosysfinitmodule+0xf8/0x190 _x64sysfinitmodule+0x23/0x30 dosyscall64+0x58/0x80 entrySYSCALL64afterhwframe+0x63/0xcd </TASK>

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
5.10.178-1

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
5.10.158-1
5.10.158-2
5.10.162-1

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
6.1.4-1

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
6.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / 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
6.1.4-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}