Improper Null Termination Affecting kernel-rt package, versions <0:4.18.0-553.16.1.rt7.357.el8_10
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRT-7203385
- published 4 Jun 2024
- disclosed 30 May 2024
Introduced: 30 May 2024
CVE-2024-36896 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt to version 0:4.18.0-553.16.1.rt7.357.el8_10 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
USB: core: Fix access violation during port device removal
Testing with KASAN and syzkaller revealed a bug in port.c:disable_store(): usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to is concurrently removed, but the function does not check for this possibility before dereferencing the returned value.
It turns out that the first dereference is unnecessary, since hub->intfdev is the parent of the port device, so it can be changed easily. Adding a check for hub == NULL prevents further problems.
The same bug exists in the disable_show() routine, and it can be fixed the same way.
References
- https://access.redhat.com/security/cve/CVE-2024-36896
- https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848
- https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277
- https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434
- https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce