TI-2025-26757 Aliases CVE-2025-40085 GHSA-2cjq-ppmx-48x5

ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card

LOW 22Published 2025-10-29 · Updated 2026-05-23

Key facts

Attack vector: —
Privileges required: —
User interaction: —
Attack complexity: —
Impact type: —
Confidentiality · integrity · availability: —
Fix status: Partial Red Hat: 5 without a fix

No CVSS vector from any source. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card In try_to_register_card(), the return value of usb_ifnum_to_if() is passed directly to usb_interface_claimed() without a NULL check, which will lead to a NULL pointer dereference when creating an invalid USB audio device. Fix this by adding a check to ensure the interface pointer is valid before passing it to usb_interface_claimed().

Why it matters now

EPSS 0.00205 10th percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.15.196, 5.20, 6.1 +5Red Hat: 5 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	5.15.75 to before 5.15.196; 5.19.17 to before 5.20; 6.0.3 to before 6.1	5.15.196, 5.20, 6.1	Patch available	CNA
Linux	Linux	6.1 and later	5.15.196, 6.1.158, 6.6.114, 6.12.55, 6.17.5, 6.18	Patch available	CNA

Linux VendorLinux Affected 5.15.75 to before 5.15.196; 5.19.17 to before 5.20; 6.0.3 to before 6.1 Fixed in 5.15.196, 5.20, 6.1 Patch available CNA
Linux VendorLinux Affected 6.1 and later Fixed in 5.15.196, 6.1.158, 6.6.114, 6.12.55, 6.17.5, 6.18 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	—	—	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.15.196, 5.20, 6.1
Fix · CNA Linux (Linux) Fixed in 5.15.196, 6.1.158, 6.6.114, 6.12.55, 6.17.5, 6.18

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2025-40085
2026-10-03 Alias added: GHSA-2cjq-ppmx-48x5

References

Other 6

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-2021-02452 Incorrect authorization in Ubuntu linux kernel 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

See all 21741 →

Sources

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