CVE-2024-46838
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-46838
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46838.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-46838
- Downstream
- Published
- 2024-09-27T13:15:15Z
- Modified
- 2024-10-09T15:35:40Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
userfaultfd: don't BUG_ON() if khugepaged yanks our page table
Since khugepaged was changed to allow retracting page tables in file mappings without holding the mmap lock, these BUG_ON()s are wrong - get rid of them.
We could also remove the preceding "if (unlikely(...))" block, but then we could reach pteoffsetmap_lock() with transhuge pages not just for file mappings but also for anonymous mappings - which would probably be fine but I think is not necessarily expected.
- References
Affected packages
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source