CVE-2026-90045

Summary

In the Linux kernel, the following vulnerability has been resolved:

USB: gadget: ffs: fix mm lifetime handling

io_data stores a pointer to the submitting task's mm_struct, but does not currently hold a reference to it while async requests are pending.

This can result in a use-after-free if the task exits before completion handling finishes.

Take a reference with mmgrab() when queuing the read request and release it with mmdrop() on request completion.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2e4c7553cd6f9c68bb741582dcb614edcbeca70f < 1625827648f4e1595ea6ba5521bc87ee5088b32baffected
LinuxLinux2e4c7553cd6f9c68bb741582dcb614edcbeca70f < f3d31484b3f26d63c09e5569ebfaa1079a17f171affected
LinuxLinux2e4c7553cd6f9c68bb741582dcb614edcbeca70f < 7411de0ce3b45286de1de82526795658ea6eacb0affected
LinuxLinux2e4c7553cd6f9c68bb741582dcb614edcbeca70f < 5eb5c72c72fef76cb765ef1669b62b6a3ba1bfc8affected
LinuxLinux3.15affected
LinuxLinux0 < 3.15unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References