CVE-2026-89733

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Source
https://cve.org/CVERecord?id=CVE-2026-89733
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89733.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-89733
Downstream
AZL (1)
BELL (1)
CLSA (5)
DEBIAN (1)
MGASA (2)
openSUSE (1)
UBUNTU (1)
Related
Published
2026-09-11T19:46:42Z
Modified
2026-10-24T02:30:16Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()
Details

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()

In uvc_function_bind() error path, we use usb_ep_free_request which uses uvc->control_req but does not set it to NULL afterwards. Thus, uvc->control_req is a dangling pointer causing a UAF. Also we do not set the uvc->control_buf pointer to NULL after freeing it, which is another dangling pointer. Fix it by setting uvc->control_req to NULL after we run usb_ep_free_request() and uvc->control_buf to NULL after kfree. Do the same for uvc_function_unbind().

Database specific 
{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89733.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0f9df939385527049c8062a099fbfa1479fe7ce0
Fixed
ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2
Fixed
85dd5e8bd6776d02854f2847d83429f1f712e99c
Fixed
502a7f5b79b7ba751988789e982924f8f496129f
Fixed
bec7708eb3b5295d12e931db24381b7c94c72953
Fixed
8e88ed8a374de67270d38689f2a81018909cafbb
Fixed
9897b7da8c0ad8356c1b8649379fcb5a689462cb
Fixed
38f822ddce9355893d734279a26ddec45182197e
Fixed
bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.2.36
Fixed
3.3
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.4.25
Fixed
3.5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3.7.2
Fixed
3.8
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1efa8a5aac93d9e67075995d7d4902b57ce184f7
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e7a4b0efe62e56a0acc81d16091c6efc2a282be8
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
065f5561a20659cf17aae5f72b32b5c2695c8e00

Affected versions

v3.*
v3.2.100
v3.2.101
v3.2.102
v3.2.36
v3.2.37
v3.2.38
v3.2.39
v3.2.40
v3.2.41
v3.2.42
v3.2.43
v3.2.44
v3.2.45
v3.2.46
v3.2.47
v3.2.48
v3.2.49
v3.2.50
v3.2.51
v3.2.52
v3.2.53
v3.2.54
v3.2.55
v3.2.56
v3.2.57
v3.2.58
v3.2.59
v3.2.60
v3.2.61
v3.2.62
v3.2.63
v3.2.64
v3.2.65
v3.2.66
v3.2.67
v3.2.68
v3.2.69
v3.2.70
v3.2.71
v3.2.72
v3.2.73
v3.2.74
v3.2.75
v3.2.76
v3.2.77
v3.2.78
v3.2.79
v3.2.80
v3.2.81
v3.2.82
v3.2.83
v3.2.84
v3.2.85
v3.2.86
v3.2.87
v3.2.88
v3.2.89
v3.2.90
v3.2.91
v3.2.92
v3.2.93
v3.2.94
v3.2.95
v3.2.96
v3.2.97
v3.2.98
v3.2.99
v3.4.100
v3.4.101
v3.4.102
v3.4.103
v3.4.104
v3.4.105
v3.4.106
v3.4.107
v3.4.108
v3.4.109
v3.4.110
v3.4.111
v3.4.112
v3.4.113
v3.4.25
v3.4.26
v3.4.27
v3.4.28
v3.4.29
v3.4.30
v3.4.31
v3.4.32
v3.4.33
v3.4.34
v3.4.35
v3.4.36
v3.4.37
v3.4.38
v3.4.39
v3.4.40
v3.4.41
v3.4.42
v3.4.43
v3.4.44
v3.4.45
v3.4.46
v3.4.47
v3.4.48
v3.4.49
v3.4.50
v3.4.51
v3.4.52
v3.4.53
v3.4.54
v3.4.55
v3.4.56
v3.4.57
v3.4.58
v3.4.59
v3.4.60
v3.4.61
v3.4.62
v3.4.63
v3.4.64
v3.4.65
v3.4.66
v3.4.67
v3.4.68
v3.4.69
v3.4.70
v3.4.71
v3.4.72
v3.4.73
v3.4.74
v3.4.75
v3.4.76
v3.4.77
v3.4.78
v3.4.79
v3.4.80
v3.4.81
v3.4.82
v3.4.83
v3.4.84
v3.4.85
v3.4.86
v3.4.87
v3.4.88
v3.4.89
v3.4.90
v3.4.91
v3.4.92
v3.4.93
v3.4.94
v3.4.95
v3.4.96
v3.4.97
v3.4.98
v3.4.99
v3.7.10
v3.7.2
v3.7.3
v3.7.4
v3.7.5
v3.7.6
v3.7.7
v3.7.8
v3.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89733.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.8.0
Fixed
5.10.270
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.221
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.188
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.157
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.109
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.50
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.2.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89733.json"