CVE-2022-48742

HighCVSS 7.8/10Last modified Aug 4, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

VendorProductVersions
LinuxLinux>= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < 2cf180360d66bd657e606c1217e0e668e6faa303; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < 7d9211678c0f0624f74cdff36117ab8316697bb8; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < a01e60a1ec6bef9be471fb7182a33c6d6f124e93; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < bd43771ee9759dd9dfae946bff190e2c5a120de5; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < 3bbe2019dd12b8d13671ee6cda055d49637b4c39; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < def5e7070079b2a214b3b1a2fbec623e6fbfe34a; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < 36a9a0aee881940476b254e0352581401b23f210; >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < c6f6f2444bdbe0079e41914a35081530d0409963
LinuxLinux3.14

References

Timeline

Published
Jun 20, 2024
Last modified
Aug 4, 2026
NVD status
Modified

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CVE-2022-48742: High severity, CVSS 7.8 | Vulnix