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CVE-2025-37822 – RISC-V Linux Kernel Uprobes Fence Vulnerability

The following table lists the changes that have been made to the
CVE-2025-37822 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 08, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    riscv: uprobes: Add missing fence.i after building the XOL buffer

    The XOL (execute out-of-line) buffer is used to single-step the
    replaced instruction(s) for uprobes. The RISC-V port was missing a
    proper fence.i (i$ flushing) after constructing the XOL buffer, which
    can result in incorrect execution of stale/broken instructions.

    This was found running the BPF selftests “test_progs:
    uprobe_autoattach, attach_probe” on the Spacemit K1/X60, where the
    uprobes tests randomly blew up.
    Added Reference https://git.kernel.org/stable/c/1dbb95a36499374c51b47ee8ae258a8862c20978
    Added Reference https://git.kernel.org/stable/c/7d1d19a11cfbfd8bae1d89cc010b2cc397cd0c48
    Added Reference https://git.kernel.org/stable/c/bcf6d3158c5902d92b6d62335af4422b7bf7c4e2
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