Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.
Product status
9db28659aa893c68f162b11fd63bb7f6a713e52f before 0588b12c418c3e4f927ced11f27b02ef4a5bfb07
1399a136127bfe1b9bb7c951d9851da62a519121 before e9a78485b658361fab6a5547377be6c1af6f1b3d
4df2427a5148093987437054bb82da4d014dcd59 before 70bc51303871159796b55ba1a8f16637b46c2511
fcd5ce4b3936242e6679875a4d3c3acfc8743e15 before b21f62b49ee9c3e0216d685d9cfd6003e5727271
fcd5ce4b3936242e6679875a4d3c3acfc8743e15 before 7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8
fcd5ce4b3936242e6679875a4d3c3acfc8743e15 before acf984a3718c2458eb9e08b6714490a04f213c58
fcd5ce4b3936242e6679875a4d3c3acfc8743e15 before 772892b29ac50c2c5e918fc80104aa6ede81d837
fcd5ce4b3936242e6679875a4d3c3acfc8743e15 before 123eddf92a114e03919942641d2c2b1f4ca56ea6
fcd5ce4b3936242e6679875a4d3c3acfc8743e15 before 6b0d0477fce747d4137aa65856318b55fba72198
8c17f6f5d0d6aab72a2af25c9911ac66e984be06
202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c
5.4
Any version before 5.4
4.9.337
4.14.303
4.19.270
5.4.229
5.10.163
5.15.87
6.0.18
6.1.4
6.2
References
git.kernel.org/...c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07
git.kernel.org/...c/e9a78485b658361fab6a5547377be6c1af6f1b3d
git.kernel.org/...c/70bc51303871159796b55ba1a8f16637b46c2511
git.kernel.org/...c/b21f62b49ee9c3e0216d685d9cfd6003e5727271
git.kernel.org/...c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8
git.kernel.org/...c/acf984a3718c2458eb9e08b6714490a04f213c58
git.kernel.org/...c/772892b29ac50c2c5e918fc80104aa6ede81d837
git.kernel.org/...c/123eddf92a114e03919942641d2c2b1f4ca56ea6
git.kernel.org/...c/6b0d0477fce747d4137aa65856318b55fba72198
