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CVE-2026-98951

unscored Published
NVD · CVE.org

In the Linux kernel, the following vulnerability has been resolved: riscv: ptrace: Zero-initialize regset buffers before copyin user_regset_copyin() only copies `count` bytes, so a PTRACE_SETREGSET request with a short iov_len leaves the rest of the stack buffer uninitialized. In riscv_vr_set() that garbage is validated and copied into the target's vstate, and in riscv_cfi_set() it can be stored as the target's shadow stack pointer. Zero both buffers, as the get path already does.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 3

  1. StatusReceived → PublishedNVD modified 2026-10-23 12:19
  2. StatusPublished → ReceivedNVD modified 2026-10-23 13:17
  3. First seenunscored · linuxNVD modified 2026-10-23 12:19

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2