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Test your applicationsUpgrade SLES:15.5
kernel-obs-build
to version 5.14.21-150500.55.52.1 or higher.
Note: Versions mentioned in the description apply only to the upstream kernel-obs-build
package and not the kernel-obs-build
package as distributed by SLES
.
See How to fix?
for SLES:15.5
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
media: pvrusb2: fix use after free on context disconnection
Upon module load, a kthread is created targeting the pvr2_context_thread_func function, which may call pvr2_context_destroy and thus call kfree() on the context object. However, that might happen before the usb hub_event handler is able to notify the driver. This patch adds a sanity check before the invalid read reported by syzbot, within the context disconnection call stack.