Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: configfs: Fix OOB read on empty string write
When writing an empty string to either ‘qw_sign’ or ’landingPage’ sysfs attributes, the store functions attempt to access page[l - 1] before validating that the length ’l’ is greater than zero.
This patch fixes the vulnerability by adding a check at the beginning of os_desc_qw_sign_store() and webusb_landingPage_store() to handle the zero-length input case gracefully by returning immediately.
Details
- Affected product:
- AlmaLinux 9.2 ESU , Amazon Linux 2 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , Debian 10 ELS , Oracle Linux 7 ELS , TuxCare 9.6 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
- Affected packages:
- linux @ 4.4.0 (+12 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| Debian 11 | Released |
35 kernels
|
| Debian 11 cloud | Released |
15 kernels
|
| Debian 12 | Released |
28 kernels
|
| Debian 13 | Planned | — |
| Oracle Linux 7 UEK 6 | Released |
112 kernels
|
| Oracle Linux 8 UEK 6 | Released |
134 kernels
|
| Oracle Linux 8 UEK 7 | Released |
77 kernels
|
| Oracle Linux 9 UEK 7 | Released |
77 kernels
|
| Proxmox VE 7 5.15 | Released |
47 kernels
|
| Ubuntu 20.04 HWE AWS | Released |
57 kernels
|
| Ubuntu 20.04 HWE Azure | Released |
40 kernels
|
| Ubuntu 22.04 | Released |
85 kernels
|
| Ubuntu 22.04 AWS | Released |
76 kernels
|
| Ubuntu 22.04 Azure | Released |
70 kernels
|
| Ubuntu 24.04 | Released |
37 kernels
|