riscv: uprobes: Add missing fence.i after building the XOL buffer
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 5.15.200, 6.1.163, 6.6.121, 6.12.26, 6.14.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 74784081aac8a0f3636965fc230e2d3b7cc123c6 · fixed in be6d98766ac952d38241d5a5b213f363afa421c3; From 74784081aac8a0f3636965fc230e2d3b7cc123c6 · fixed in b6d8d4d01ca8514fa89b05355f296758a91e2297; From 74784081aac8a0f3636965fc230e2d3b7cc123c6 · fixed in 77c956152a3a7c7a18b68f3654f70565b2181d03; From 74784081aac8a0f3636965fc230e2d3b7cc123c6 · fixed in bcf6d3158c5902d92b6d62335af4422b7bf7c4e2; From 74784081aac8a0f3636965fc230e2d3b7cc123c6 · fixed in 1dbb95a36499374c51b47ee8ae258a8862c20978; From 74784081aac8a0f3636965fc230e2d3b7cc123c6 · fixed in 7d1d19a11cfbfd8bae1d89cc010b2cc397cd0c48
- Linux Linux
5.12
- KernelLinux
From 5.12.0 · fixed in 5.15.200; From 5.16.0 · fixed in 6.1.163; From 6.2.0 · fixed in 6.6.121; From 6.7.0 · fixed in 6.12.26; From 6.13.0 · fixed in 6.14.5