TI-2022-25237 Aliases CVE-2022-49733 GHSA-73xw-qxgf-j8c4

ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC

LOW 33CWE-476Published 2025-03-02 · Updated 2026-08-05

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00156 4th percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.4.215, 5.10.148, 5.15.68 +2Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	2.6.20 and later	5.4.215, 5.10.148, 5.15.68, 5.19.9, 6.0	Patch available	CNA

Linux VendorLinux Affected 2.6.20 and later Fixed in 5.4.215, 5.10.148, 5.15.68, 5.19.9, 6.0 Patch available CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	before 5.4.215; 5.5 to before 5.10.148; 5.11 to before 5.15.68; 5.16 to before 5.19.9	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc1::::::	6.0 rc1	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc2::::::	6.0 rc2	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc3::::::	6.0 rc3	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc4::::::	6.0 rc4	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.4.215; 5.5 to before 5.10.148; 5.11 to before 5.15.68; 5.16 to before 5.19.9 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* Versions 6.0 rc1 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* Versions 6.0 rc2 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* Versions 6.0 rc3 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* Versions 6.0 rc4 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.4.215, 5.10.148, 5.15.68, 5.19.9, 6.0

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope

Not affected: 4 products

Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2022-49733
2026-10-03 Alias added: GHSA-73xw-qxgf-j8c4

References

Patch 5

TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3

See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences