CVE-2023-52615: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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

• Linux Linux Kernel: from 2.6.33, before 4.19.307 (fixed in 4.19.307); from 4.20, before 5.4.269 (fixed in 5.4.269); from 5.5, before 5.10.210 (fixed in 5.10.210); from 5.11, before 5.15.149 (fixed in 5.15.149); from 5.16, before 6.1.76 (fixed in 6.1.76); from 6.2, before 6.6.15 (fixed in 6.6.15); …

Published 2024-03-18. Last modified 2026-06-17.