CVE-2022-48742
rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink()
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Description
In the Linux kernel, the following vulnerability has been resolved: rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink() While looking at one unrelated syzbot bug, I found the replay logic in __rtnl_newlink() to potentially trigger use-after-free. It is better to clear master_dev and m_ops inside the loop, in case we have to replay it.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/2cf180360d66bd657e606c1217e0e668e6faa303
- https://git.kernel.org/stable/c/36a9a0aee881940476b254e0352581401b23f210
- https://git.kernel.org/stable/c/3bbe2019dd12b8d13671ee6cda055d49637b4c39
- https://git.kernel.org/stable/c/7d9211678c0f0624f74cdff36117ab8316697bb8
- https://git.kernel.org/stable/c/a01e60a1ec6bef9be471fb7182a33c6d6f124e93
References (8)
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