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.
Product status
74784081aac8a0f3636965fc230e2d3b7cc123c6 (git) before be6d98766ac952d38241d5a5b213f363afa421c3
74784081aac8a0f3636965fc230e2d3b7cc123c6 (git) before b6d8d4d01ca8514fa89b05355f296758a91e2297
74784081aac8a0f3636965fc230e2d3b7cc123c6 (git) before 77c956152a3a7c7a18b68f3654f70565b2181d03
74784081aac8a0f3636965fc230e2d3b7cc123c6 (git) before bcf6d3158c5902d92b6d62335af4422b7bf7c4e2
74784081aac8a0f3636965fc230e2d3b7cc123c6 (git) before 1dbb95a36499374c51b47ee8ae258a8862c20978
74784081aac8a0f3636965fc230e2d3b7cc123c6 (git) before 7d1d19a11cfbfd8bae1d89cc010b2cc397cd0c48
5.12
Any version before 5.12
5.15.200 (semver)
6.1.163 (semver)
6.6.121 (semver)
6.12.26 (semver)
6.14.5 (semver)
6.15 (original_commit_for_fix)
References
git.kernel.org/...c/be6d98766ac952d38241d5a5b213f363afa421c3
git.kernel.org/...c/b6d8d4d01ca8514fa89b05355f296758a91e2297
git.kernel.org/...c/77c956152a3a7c7a18b68f3654f70565b2181d03
git.kernel.org/...c/bcf6d3158c5902d92b6d62335af4422b7bf7c4e2
git.kernel.org/...c/1dbb95a36499374c51b47ee8ae258a8862c20978
git.kernel.org/...c/7d1d19a11cfbfd8bae1d89cc010b2cc397cd0c48