CVE-2025-37966

riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR_CTRL

Description

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix kernel crash due to PR_SET_TAGGED_ADDR_CTRL When userspace does PR_SET_TAGGED_ADDR_CTRL, but Supm extension is not available, the kernel crashes: Oops - illegal instruction [#1] [snip] epc : set_tagged_addr_ctrl+0x112/0x15a ra : set_tagged_addr_ctrl+0x74/0x15a epc : ffffffff80011ace ra : ffffffff80011a30 sp : ffffffc60039be10 [snip] status: 0000000200000120 badaddr: 0000000010a79073 cause: 0000000000000002 set_tagged_addr_ctrl+0x112/0x15a __riscv_sys_prctl+0x352/0x73c do_trap_ecall_u+0x17c/0x20c andle_exception+0x150/0x15c Fix it by checking if Supm is available.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/4b595a2f5656cd45d534ed2160c94f7662adefe5
https://git.kernel.org/stable/c/ae08d55807c099357c047dba17624b09414635dd

Frequently Asked Questions

What is the severity of CVE-2025-37966?: CVE-2025-37966 has not yet been assigned a CVSS score.
How to fix CVE-2025-37966?: To fix CVE-2025-37966, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-37966 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-37966 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-37966?: CVE-2025-37966 affects Linux Linux, Linux Linux.

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