# CVE-2025-37966: linux: In the Linux kernel, the following vulnerability has been resolved:  riscv: Fix kernel crash due to PR_SET_TAGGED_ADD...

CVE-2025-37966 is fixed in linux on 1 platform by DEBIAN-CVE-2025-37966 (version 6.16.3-1), released May 20, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-37966
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 20, 2025

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.16.3-1 | [DEBIAN-CVE-2025-37966](https://patchblox.com/security/data/fix/linux/debian-cve-2025-37966.md) | May 20, 2025 |

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