Wind River Support Network

Description

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

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

After commit 1a80dbcb2dba, bpf_link can be freed by
link->ops->dealloc_deferred, 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.

CREATE(Triage):(User=admin) CVE-2024-40909 (https://nvd.nist.gov/vuln/detail/CVE-2024-40909)

CVEs

• CVE-2024-40909