CVE-2022-49733

EUVD-2025-5864
In the Linux kernel, the following vulnerability has been resolved:

ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC

There is a small race window at snd_pcm_oss_sync() that is called from
OSS PCM SNDCTL_DSP_SYNC ioctl; namely the function calls
snd_pcm_oss_make_ready() at first, then takes the params_lock mutex
for the rest.  When the stream is set up again by another thread
between them, it leads to inconsistency, and may result in unexpected
results such as NULL dereference of OSS buffer as a fuzzer spotted
recently.

The fix is simply to cover snd_pcm_oss_make_ready() call into the same
params_lock mutex with snd_pcm_oss_make_ready_locked() variant.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.7 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
4.7 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
𝑥
< 5.4.215
linuxlinux_kernel
5.5 ≤
𝑥
< 5.10.148
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.68
linuxlinux_kernel
5.16 ≤
𝑥
< 5.19.9
linuxlinux_kernel
6.0:rc1
linuxlinux_kernel
6.0:rc2
linuxlinux_kernel
6.0:rc3
linuxlinux_kernel
6.0:rc4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.123-1
fixed
bookworm (security)
6.1.128-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.234-1
fixed
sid
6.12.17-1
fixed
trixie
6.12.12-1
fixed