CVE-2024-50142

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Source
https://cve.org/CVERecord?id=CVE-2024-50142
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50142.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-50142
Downstream
Related
Published
2024-11-07T09:31:19.415Z
Modified
2026-03-20T12:39:36.351525Z
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
xfrm: validate new SA's prefixlen using SA family when sel.family is unset
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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50142.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed
f31398570acf0f0804c644006f7bfa9067106b0a
Fixed
401ad99a5ae7180dd9449eac104cb755f442e7f3
Fixed
8df5cd51fd70c33aa1776e5cbcd82b0a86649d73
Fixed
2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71
Fixed
bce1afaa212ec380bf971614f70909a27882b862
Fixed
7d9868180bd1e4cf37e7c5067362658971162366
Fixed
e68dd80ba498265d2266b12dc3459164f4ff0c4a
Fixed
3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50142.json"