DEBIAN-CVE-2022-50773
- Source
- https://security-tracker.debian.org/tracker/CVE-2022-50773
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50773.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-50773
- Upstream
- Published
- 2025-12-24T13:16:04.120Z
- Modified
- 2025-12-25T11:18:19.587933Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: ALSA: mts64: fix possible null-ptr-defer in sndmts64interrupt I got a null-ptr-defer error report when I do the following tests on the qemu platform: make defconfig and CONFIGPARPORT=m, CONFIGPARPORTPC=m, CONFIGSNDMTS64=m Then making test scripts: cat>testmod1.sh<<EOF modprobe snd-mts64 modprobe snd-mts64 EOF Executing the script, perhaps several times, we will get a null-ptr-defer report, as follow: syzkaller:~# ./testmod.sh sndmts64: probe of sndmts64.0 failed with error -5 modprobe: ERROR: could not insert 'sndmts64': No such device BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor write access in kernel mode #PF: errorcode(0x0002) - not-present page PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP PTI CPU: 0 PID: 205 Comm: modprobe Not tainted 6.1.0-rc8-00588-g76dcd734eca2 #6 Call Trace: <IRQ> sndmts64interrupt+0x24/0xa0 [sndmts64] parportirqhandler+0x37/0x50 [parport] _handleirqeventpercpu+0x39/0x190 handleirqeventpercpu+0xa/0x30 handleirqevent+0x2f/0x50 handleedgeirq+0x99/0x1b0 _commoninterrupt+0x5d/0x100 commoninterrupt+0xa0/0xc0 </IRQ> <TASK> asmcommoninterrupt+0x22/0x40 RIP: 0010:rawwriteunlockirqrestore+0x11/0x30 parportclaim+0xbd/0x230 [parport] sndmts64probe+0x14a/0x465 [sndmts64] platformprobe+0x3f/0xa0 reallyprobe+0x129/0x2c0 _driverprobedevice+0x6d/0xc0 driverprobedevice+0x1a/0xa0 _deviceattachdriver+0x7a/0xb0 busforeachdrv+0x62/0xb0 _deviceattach+0xe4/0x180 busprobedevice+0x82/0xa0 deviceadd+0x550/0x920 platformdeviceadd+0x106/0x220 sndmts64attach+0x2e/0x80 [sndmts64] portcheck+0x14/0x20 [parport] busforeachdev+0x6e/0xc0 _parportregisterdriver+0x7c/0xb0 [parport] sndmts64moduleinit+0x31/0x1000 [sndmts64] dooneinitcall+0x3c/0x1f0 doinitmodule+0x46/0x1c6 loadmodule+0x1d8d/0x1e10 _dosysfinitmodule+0xa2/0xf0 dosyscall64+0x37/0x90 entrySYSCALL64after_hwframe+0x63/0xcd </TASK> Kernel panic - not syncing: Fatal exception in interrupt Rebooting in 1 seconds.. The mts wa not initialized during interrupt, we add check for mts to fix this bug.
- References
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed5.10.178-1
Affected versions
5.*
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source