Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fix null pointer dereference in usb_put_function_instance() usb_put_function_instance() attempts to dereference fd inside fi struct to get mod in uvc_alloc_inst() error path. However, fd is not allocated until later in try_get_usb_function_instance() after allocating fi in uvc_alloc_inst() and thus guranteed to be null in error path. Fix this by adding a null check for fi->fd that returns if fd is null.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 0fc54a00954f9f4c3e3d4ffa64a530685d99a39b; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 6e6736c049683380f5e20becde498986e9293ca4; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 3a9691fff79bcce95338435599df6d3ae433cfdc; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 7a4f4ca7ff32ae24807c83e2a06d62b13378d53c; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before d3a7fa61997db3bf6dadef4c1bd87a4fa782a817; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 5117f236e9e30744338b425395d55913c4500897; affected 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 before 6e74ac5c596fd246e37eadfc354567179ccbe9aa |
| Linux / Linux | affected 3.9; unaffected 0 before 3.9; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0fc54a00954f9f4c3e3d4ffa64a530685d99a39b
- https://git.kernel.org/stable/c/6e6736c049683380f5e20becde498986e9293ca4
- https://git.kernel.org/stable/c/3a9691fff79bcce95338435599df6d3ae433cfdc
- https://git.kernel.org/stable/c/7a4f4ca7ff32ae24807c83e2a06d62b13378d53c
- https://git.kernel.org/stable/c/6ea3a073ca97716d4a73df49a3bec1c3ccf8e2a0
- https://git.kernel.org/stable/c/d3a7fa61997db3bf6dadef4c1bd87a4fa782a817
- https://git.kernel.org/stable/c/5117f236e9e30744338b425395d55913c4500897
- https://git.kernel.org/stable/c/6e74ac5c596fd246e37eadfc354567179ccbe9aa