First published: Thu Feb 22 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|---|---|
Linux Linux kernel | <4.19.306 | |
Linux Linux kernel | >=4.20<5.4.268 | |
Linux Linux kernel | >=5.5.0<5.10.209 | |
Linux Linux kernel | >=5.11.0<5.15.148 | |
Linux Linux kernel | >=5.16.0<6.1.75 | |
Linux Linux kernel | >=6.2.0<6.6.14 | |
Linux Linux kernel | >=6.7.0<6.7.2 | |
debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 | |
<4.19.306 | ||
>=4.20<5.4.268 | ||
>=5.5.0<5.10.209 | ||
>=5.11.0<5.15.148 | ||
>=5.16.0<6.1.75 | ||
>=6.2.0<6.6.14 | ||
>=6.7.0<6.7.2 |
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