NULL Pointer Dereference Affecting perf package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-PERF-6554853
- published 18 Apr 2024
- disclosed 3 Apr 2024
Introduced: 3 Apr 2024
CVE-2024-26715 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 perf.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend
In current scenario if Plug-out and Plug-In performed continuously there could be a chance while checking for dwc->gadget_driver in dwc3_gadget_suspend, a NULL pointer dereference may occur.
Call Stack:
CPU1: CPU2:
gadget_unbind_driver dwc3_suspend_common
dwc3_gadget_stop dwc3_gadget_suspend
dwc3_disconnect_gadget
CPU1 basically clears the variable and CPU2 checks the variable. Consider CPU1 is running and right before gadget_driver is cleared and in parallel CPU2 executes dwc3_gadget_suspend where it finds dwc->gadget_driver which is not NULL and resumes execution and then CPU1 completes execution. CPU2 executes dwc3_disconnect_gadget where it checks dwc->gadget_driver is already NULL because of which the NULL pointer deference occur.
References
- https://access.redhat.com/security/cve/CVE-2024-26715
- https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182
- https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751
- https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316
- https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7
- https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568b