Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-64082

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compat_riscv_gpr_set() calls cregs_to_regs() unconditionally, even when user_regset_copyin() fails. Since cregs is an uninitialized stack variable, a copyin failure causes uninitialized stack data to be written into the target task's pt_regs, corrupting its register state and potentially leaking kernel stack contents. compat_restore_sigcontext() has the same issue: it calls cregs_to_regs() even when __copy_from_user() fails, leading to the same corruption of the signal-returning task's register state on error. Only call cregs_to_regs() when the user copy succeeds.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 2.9%
CVSS Severity
CVSS v3 Score 7.8
Products affected by CVE-2026-64082


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