CVE-2024-40909

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-40909
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-40909.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-40909
Downstream
Related
Published
2024-07-12T13:15:14Z
Modified
2024-11-21T09:31:50Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix a potential use-after-free in bpflinkfree()

After commit 1a80dbcb2dba, bpflink can be freed by link->ops->deallocdeferred, but the code still tests and uses link->ops->dealloc afterward, which leads to a use-after-free as reported by syzbot. Actually, one of them should be sufficient, so just call one of them instead of both. Also add a WARN_ON() in case of any problematic implementation.

References

Affected packages

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.9.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}