Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_hid: fix f_hidg lifetime vs cdev The embedded struct cdev does not have its lifetime correctly tied to the enclosing struct f_hidg, so there is a use-after-free if /dev/hidgN is held open while the gadget is deleted. This can readily be replicated with libusbgx's example programs (for conciseness - operating directly via configfs is equivalent): gadget-hid exec 3<> /dev/hidg0 gadget-vid-pid-remove exec 3<&- Pull the existing device up in to struct f_hidg and make use of the cdev_device_{add,del}() helpers. This changes the lifetime of the device object to match struct f_hidg, but note that it is still added and deleted at the same time.
Product status
71adf118946957839a13aa4d1094183e05c6c094 (git) before 1cd7f156f6389918f760687fbbf133c86da93162
71adf118946957839a13aa4d1094183e05c6c094 (git) before c78c87c4e389b62f8892af7f59857447aa6d9797
71adf118946957839a13aa4d1094183e05c6c094 (git) before 1b6a53e447ec3d81623610c8c7ec5082b47dfdce
71adf118946957839a13aa4d1094183e05c6c094 (git) before d3136b79705c2e3bba9c76adc5628af0215d798e
71adf118946957839a13aa4d1094183e05c6c094 (git) before 9e4b85d815b14bd4db2deea2a54264a23de8b896
71adf118946957839a13aa4d1094183e05c6c094 (git) before 9e08b7f5fa00e9d550851352bd0d1ba74ccffef2
71adf118946957839a13aa4d1094183e05c6c094 (git) before 89ff3dfac604614287ad5aad9370c3f984ea3f4b
2.6.35
Any version before 2.6.35
4.19.270 (semver)
5.4.229 (semver)
5.10.163 (semver)
5.15.86 (semver)
6.0.16 (semver)
6.1.2 (semver)
6.2 (original_commit_for_fix)
References
git.kernel.org/...c/1cd7f156f6389918f760687fbbf133c86da93162
git.kernel.org/...c/c78c87c4e389b62f8892af7f59857447aa6d9797
git.kernel.org/...c/1b6a53e447ec3d81623610c8c7ec5082b47dfdce
git.kernel.org/...c/d3136b79705c2e3bba9c76adc5628af0215d798e
git.kernel.org/...c/9e4b85d815b14bd4db2deea2a54264a23de8b896
git.kernel.org/...c/9e08b7f5fa00e9d550851352bd0d1ba74ccffef2
git.kernel.org/...c/89ff3dfac604614287ad5aad9370c3f984ea3f4b
