01 Record

CVE-2026-89736

usb: gadget: u_audio: Fix use-after-free on sound card disconnect

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

usb: gadget: u_audio: Fix use-after-free on sound card disconnect

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.12% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 1.9% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Received. NVD last modified this record on 2026-10-19.
Red Hat severity: Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-09-11 19:46Z1 MO AGO

Last updated

2026-10-19 08:51Z10 DAYS AGO

Reserved

2026-09-11

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

4feb8a7befe4c558e1ffcacdb9bc6087f3aeb38a7abb824c80c7dac19ad32dbb

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux33f341c1fc60e172a3515c51bdabee11e83d1ee9 to < a7ecd1a04f4f485d7be6443d0f0b2c61a800cb82, b131989797f7287d7fdadb2bababc05a15d44750 to < f983793f03148b097977f200298db215cd2d4438, 3bc7324e4911351e39c54a62e6ca46321cb10faf to < 6f46762196f04464e1050a9ee94e72b917db9010, 6c67ed9ad9b83e453e808f9b31a931a20a25629b to < 891a8d11f4d5eb50b2ce7570f4f98204a7a57493, 6c67ed9ad9b83e453e808f9b31a931a20a25629b to < c74ff0b1a0fca53d3ac185873c87d6a719b30a47, 6c67ed9ad9b83e453e808f9b31a931a20a25629b to < 4e747c864a88537e18b1ffc19a1954c9686bb8e1, 6c67ed9ad9b83e453e808f9b31a931a20a25629b to < 79a92896e2bb9471550c56fc23d8d93592f04c27, 6c67ed9ad9b83e453e808f9b31a931a20a25629b to < 858965947081d10d41d9a1010a540d3d5eea958b, 3e016ef2e72da93a2ea7afbb45de1b481b44d761, 3256e152b645fc1e788ba44c2d8ced690113e3e6, 0eda2004f38d95ef5715d62be884cd344260535b, 43ca70753dfffd517d2af126da28690f8f615605, 5.10.177 to < 5.10.270, 5.15.105 to < 5.15.221, 6.1.22 to < 6.1.188, 4.14.312 to < 4.15, 4.19.280 to < 4.20, 5.4.240 to < 5.5, 6.2.9 to < 6.3, 6.3—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/a7ecd1a04f4f485d7be6443d0f0b2c61a800cb82
git.kernel.orghttps://git.kernel.org/stable/c/f983793f03148b097977f200298db215cd2d4438
git.kernel.orghttps://git.kernel.org/stable/c/6f46762196f04464e1050a9ee94e72b917db9010
git.kernel.orghttps://git.kernel.org/stable/c/891a8d11f4d5eb50b2ce7570f4f98204a7a57493
git.kernel.orghttps://git.kernel.org/stable/c/c74ff0b1a0fca53d3ac185873c87d6a719b30a47
git.kernel.orghttps://git.kernel.org/stable/c/4e747c864a88537e18b1ffc19a1954c9686bb8e1
git.kernel.orghttps://git.kernel.org/stable/c/79a92896e2bb9471550c56fc23d8d93592f04c27
git.kernel.orghttps://git.kernel.org/stable/c/858965947081d10d41d9a1010a540d3d5eea958b

07 Fixed in

Debian 12

linux
Fixed in 6.1.190-1
linux-6.12
Fixed in 6.12.111-1~deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.111-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.2.6-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.