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CVE-2024-38574
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MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
In the Linux kernel, the following vulnerability has been resolved:
libbpf: Prevent null-pointer dereference when prog to load has no BTF
In bpf_objec_load_prog(), there’s no guarantee that obj->btf is non-NULL
when passing it to btffd(), and this function does not perform any
check before dereferencing its argument (as bpf_objectbtf_fd() used to
do). As a consequence, we get segmentation fault errors in bpftool (for
example) when trying to load programs that come without BTF information.
v2: Keep btffd() in the fix instead of reverting to bpf_objectbtf_fd().
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Vendors
- Linux
Products
- Linux
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Technical Analysis
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