CVE-2024-53148
comedi: Flush partial mappings in error case
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- 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: comedi: Flush partial mappings in error case If some remap_pfn_range() calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedi_buf_map_put(bm). The userspace mappings are only cleaned up later in the mmap error path. Fix it by explicitly flushing all mappings in our VMA on the error path. See commit 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case").
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.29
References 8
git.kernel.org
- stable/c/57f048c2d205b85e34282a9b0b0ae177e84c2f44
- stable/c/b9322408d83accc8b96322bc7356593206288c56
- stable/c/8797b7712de704dc231f9e821d8eb3b9aeb3a032
- stable/c/16c507df509113c037cdc0ba642b9ab3389bd26c
- stable/c/9b07fb464eb69a752406e78e62ab3a60bfa7b00d
- stable/c/c6963a06ce5c61d3238751ada04ee1569663a828
- stable/c/297f14fbb81895f4ccdb0ad25d196786d6461e00
- stable/c/ce8f9fb651fac95dd41f69afe54d935420b945bd