CVE-2026-53351: riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-01 · updated 2026-07-22

Description

In the Linux kernel, the following vulnerability has been resolved: riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI Fixes a warning while dumping core: [54983.546369][ C7] WARNING: [!note_name] fs/binfmt_elf.c:1771 at elf_core_dump+0x910/0xf68, CPU#7: abort01/31982

Affected products

Linux kernel: from 7.0 before 7.0.13; 7.1-rc1, 7.1-rc2, 7.1-rc3, 7.1-rc4, 7.1-rc5, 7.1-rc6 (+1) — fixed in 7.0.13

How to fix

Upgrade to a fixed version: Linux kernel 7.0.13. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/08200bef0983ffed039ab399df0cba8d900ce5fc
https://git.kernel.org/stable/c/e3573f739e3dadab57ec80488d07e05c8f6e82d3

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