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medium5.5

CVE-2023-52615

In the Linux kernel, the following vulnerability has been resolved: hwrng: core - Fix page fault dead lock on mmap-ed hwrng There is a dead-lock in the hwrng d…

Impact

In the Linux kernel, the following vulnerability has been resolved: hwrng: core - Fix page fault dead lock on mmap-ed hwrng There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.6.33 before 4.19.307
from 4.20 before 5.4.269
from 5.5 before 5.10.210
from 5.11 before 5.15.149
from 5.16 before 6.1.76
from 6.2 before 6.6.15

Weakness classification

CWE-667

References