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CVE-2021-47232
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MITRE ATT&CK
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Credential Access
Defense Evasion
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Impact
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Lateral Movement
Persistence
Privilege Escalation
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Description
In the Linux kernel, the following vulnerability has been resolved:
can: j1939: fix Use-after-Free, hold skb ref while in use
This patch fixes a Use-after-Free found by the syzbot.
The problem is that a skb is taken from the per-session skb queue,
without incrementing the ref count. This leads to a Use-after-Free if
the skb is taken concurrently from the session queue due to a CTS.
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Vendors
- Linux
Products
- Linux
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Technical Analysis
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CVE ID
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