riscv: stacktrace: Disable KASAN checks for non-current tasks
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.1%
exploitation probability
0.1%top 95% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
riscv: stacktrace: Disable KASAN checks for non-current tasks
Unwinding the stack of a task other than current, KASAN would report
"BUG: KASAN: out-of-bounds in walk_stackframe+0x41c/0x460"
There is a same issue on x86 and has been resolved by the commit
84936118bdf3 ("x86/unwind: Disable KASAN checks for non-current tasks")
The solution could be applied to RISC-V too.
This patch also can solve the issue:
https://seclists.org/oss-sec/2025/q4/23
[pjw@kernel.org: clean up checkpatch issues]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/060ea84a484e852b52b938f234bf9b5503a6c910https://git.kernel.org/stable/c/27379fcc15a10d3e3780fe79ba3fc7ed1ccd78e2https://git.kernel.org/stable/c/2c8d2b53866fb229b438296526ef0fa5a990e5e5https://git.kernel.org/stable/c/ef4d626ac59a56f8ec5cc09c1fef26f2923eec6fhttps://git.kernel.org/stable/c/f34ba22989da61186f30a40b6a82e0b3337b96fc