mailbox: riscv-sbi-mpxy: validate RPMI notification lengths
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.18.52, 7.2.6
- 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
Summary
In the Linux kernel, the following vulnerability has been resolved: mailbox: riscv-sbi-mpxy: validate RPMI notification lengths The SBI return value controls how many bytes are copied from shared memory into the RPMI notification buffer. It is not validated against the negotiated shared-memory size before that copy. The event walker also uses a reversed loop condition and can inspect a short event record. Validate the complete notification length before copying it, iterate only while a full event header remains, and stop when a declared event payload extends beyond the copied notification data.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 · fixed in cbc24bce70dfd91c7b2f53b4fa896e9a4b6d6a6b; From bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 · fixed in c7bc5e7677bcda7a446d63b989cfaa3fe91d6b76; From bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 · fixed in 11d5af151bcbe78f5a579e0faecd3be9cea0399a
- Linux Linux
6.18
- KernelLinux
From 6.18.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6