AZL-53745
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-53745.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-53745
- Upstream
- Published
- 2024-11-07T10:15:06Z
- Modified
- 2026-04-01T05:18:08.286560Z
- 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
- CVE-2024-50142 affecting package kernel for versions less than 5.15.173.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
xfrm: validate new SA's prefixlen using SA family when sel.family is unset
This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.")
syzbot created an SA with usersa.sel.family = AFUNSPEC usersa.sel.prefixlens = 128 usersa.family = AF_INET
Because of the AFUNSPEC selector, verifynewsainfo doesn't put limits on prefixlen{s,d}. But then copyfromuserstate sets x->sel.family to usersa.family (AFINET). Do the same conversion in verifynewsainfo before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.
- References