CVE-2022-49308
extcon: Modify extcon device to be created after driver data is set
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: extcon: Modify extcon device to be created after driver data is set Currently, someone can invoke the sysfs such as state_show() intermittently before dev_set_drvdata() is done. And it can be a cause of kernel Oops because of edev is Null at that time. So modified the driver registration to after setting drviver data. - Oops's backtrace. Backtrace: [<c067865c>] (state_show) from [<c05222e8>] (dev_attr_show) [<c05222c0>] (dev_attr_show) from [<c02c66e0>] (sysfs_kf_seq_show) [<c02c6648>] (sysfs_kf_seq_show) from [<c02c496c>] (kernfs_seq_show) [<c02c4938>] (kernfs_seq_show) from [<c025e2a0>] (seq_read) [<c025e11c>] (seq_read) from [<c02c50a0>] (kernfs_fop_read) [<c02c5064>] (kernfs_fop_read) from [<c0231cac>] (__vfs_read) [<c0231c5c>] (__vfs_read) from [<c0231ee0>] (vfs_read) [<c0231e34>] (vfs_read) from [<c0232464>] (ksys_read) [<c02323f0>] (ksys_read) from [<c02324fc>] (sys_read) [<c02324e4>] (sys_read) from [<c00091d0>] (__sys_trace_return)
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.28% · top 79% 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: Medium 5.5.
Affected products
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < 6e721f3ad0535b24f19a62420f4da95212cf069c
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < cb81ea998c461868d1168411a867d8ffee12f23f
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < d472c78cc82999d07bd09193a6718016ce9cd386
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < abf3b222614f49f98e606fccdd269161c0d70204
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < 368e68ad6da4317fc4170e8d92b51c13d1bfe7a7
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < 35ff1ac55d301efb3f467cf5426faaeb3452994b
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < 033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c
- affected de55d8716ac50a356cea736c29bb7db5ac3d0190 – < 5dcc2afe716d69f5112ce035cb14f007461ff189
- affected 3.5
- unaffected < 3.5
- unaffected 4.14.283 – ≤ 4.14.*
- unaffected 4.19.247 – ≤ 4.19.*
- unaffected 5.4.198 – ≤ 5.4.*
- unaffected 5.10.122 – ≤ 5.10.*
- unaffected 5.15.47 – ≤ 5.15.*
- unaffected 5.17.15 – ≤ 5.17.*
- unaffected 5.18.4 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (8)
- https://git.kernel.org/stable/c/6e721f3ad0535b24f19a62420f4da95212cf069c (opens in a new tab)
- https://git.kernel.org/stable/c/cb81ea998c461868d1168411a867d8ffee12f23f (opens in a new tab)
- https://git.kernel.org/stable/c/d472c78cc82999d07bd09193a6718016ce9cd386 (opens in a new tab)
- https://git.kernel.org/stable/c/abf3b222614f49f98e606fccdd269161c0d70204 (opens in a new tab)
- https://git.kernel.org/stable/c/368e68ad6da4317fc4170e8d92b51c13d1bfe7a7 (opens in a new tab)
- https://git.kernel.org/stable/c/35ff1ac55d301efb3f467cf5426faaeb3452994b (opens in a new tab)
- https://git.kernel.org/stable/c/033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c (opens in a new tab)
- https://git.kernel.org/stable/c/5dcc2afe716d69f5112ce035cb14f007461ff189 (opens in a new tab)
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)
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[](https://trackcve.app/cve/CVE-2022-49308)Record last updated .