CVE-2026-98951None▾ SunlitIn 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 t…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 25.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
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.
Linux >= 9300f00439743c4a34d735e1a27118eb68a1504e < 89fc70d73f4ac8781f9e15edd1dbc6b6088453b3Linux >= 9300f00439743c4a34d735e1a27118eb68a1504e < 59052a88ba5fe4a7bb34b3a0a42aa5d453d3bb97Linux f2a9cd050901c4734bc175294c3bd6a40a1a9e99Linux >= 6.5.3 < 6.6Linux 6.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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