CVE-2022-48742
rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < 2cf180360d66bd657e606c1217e0e668e6faa303
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < 7d9211678c0f0624f74cdff36117ab8316697bb8
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < a01e60a1ec6bef9be471fb7182a33c6d6f124e93
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < bd43771ee9759dd9dfae946bff190e2c5a120de5
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < 3bbe2019dd12b8d13671ee6cda055d49637b4c39
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < def5e7070079b2a214b3b1a2fbec623e6fbfe34a
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < 36a9a0aee881940476b254e0352581401b23f210
- affected ba7d49b1f0f8e5f24294a880ed576964059af5ef – < c6f6f2444bdbe0079e41914a35081530d0409963
- affected 3.14
- unaffected < 3.14
- unaffected 4.9.300 – ≤ 4.9.*
- unaffected 4.14.265 – ≤ 4.14.*
- unaffected 4.19.228 – ≤ 4.19.*
- unaffected 5.4.177 – ≤ 5.4.*
- unaffected 5.10.97 – ≤ 5.10.*
- unaffected 5.15.20 – ≤ 5.15.*
- unaffected 5.16.6 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (8)
- https://git.kernel.org/stable/c/2cf180360d66bd657e606c1217e0e668e6faa303 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/7d9211678c0f0624f74cdff36117ab8316697bb8 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/a01e60a1ec6bef9be471fb7182a33c6d6f124e93 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/bd43771ee9759dd9dfae946bff190e2c5a120de5 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/3bbe2019dd12b8d13671ee6cda055d49637b4c39 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/def5e7070079b2a214b3b1a2fbec623e6fbfe34a (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/36a9a0aee881940476b254e0352581401b23f210 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c6f6f2444bdbe0079e41914a35081530d0409963 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-48742)Record last updated .