CVE-2025-37822

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux74784081aac8a0f3636965fc230e2d3b7cc123c6 < be6d98766ac952d38241d5a5b213f363afa421c3affected
LinuxLinux74784081aac8a0f3636965fc230e2d3b7cc123c6 < b6d8d4d01ca8514fa89b05355f296758a91e2297affected
LinuxLinux74784081aac8a0f3636965fc230e2d3b7cc123c6 < 77c956152a3a7c7a18b68f3654f70565b2181d03affected
LinuxLinux74784081aac8a0f3636965fc230e2d3b7cc123c6 < bcf6d3158c5902d92b6d62335af4422b7bf7c4e2affected
LinuxLinux74784081aac8a0f3636965fc230e2d3b7cc123c6 < 1dbb95a36499374c51b47ee8ae258a8862c20978affected
LinuxLinux74784081aac8a0f3636965fc230e2d3b7cc123c6 < 7d1d19a11cfbfd8bae1d89cc010b2cc397cd0c48affected
LinuxLinux5.12affected
LinuxLinux0 < 5.12unaffected
LinuxLinux5.15.200 <= 5.15.*unaffected
LinuxLinux6.1.163 <= 6.1.*unaffected
LinuxLinux6.6.121 <= 6.6.*unaffected
LinuxLinux6.12.26 <= 6.12.*unaffected
LinuxLinux6.14.5 <= 6.14.*unaffected
LinuxLinux6.15 <= *unaffected

Weaknesses

References