CVE-2022-49308: extcon: Modify extcon device to be created after driver data is set
Vulnerability summary
CVE-2022-49308 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 21% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 5Timeline
- 26-02-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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)
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu112 products
- linuxAll versions (No fix recorded) | < 4.15.0-192.203 | < 5.4.0-126.142 | < 5.15.0-48.54
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1140.151 | < 5.4.0-1085.92 | < 5.15.0-1020.24
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < 6e721f3ad0535b24f19a62420f4da95212cf069c | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < cb81ea998c461868d1168411a867d8ffee12f23f | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < d472c78cc82999d07bd09193a6718016ce9cd386 | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < abf3b222614f49f98e606fccdd269161c0d70204 | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < 368e68ad6da4317fc4170e8d92b51c13d1bfe7a7 | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < 35ff1ac55d301efb3f467cf5426faaeb3452994b | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < 033ec4e7e59ae5e1ef1e8c10bc6552926044ed1c | ≥ de55d8716ac50a356cea736c29bb7db5ac3d0190, < 5dcc2afe716d69f5112ce035cb14f007461ff189 | 3.5
- linux_kernel< 4.14.283 | ≥ 4.15, < 4.19.247 | ≥ 4.20, < 5.4.198 | ≥ 5.5, < 5.10.122 | ≥ 5.11, < 5.15.47 | ≥ 5.16, < 5.17.15 | ≥ 5.18, < 5.18.4
Debian1 product
- linux< 5.18.5-1
3 vendors · 115 products
