CVE-2025-68781: usb: phy: fsl-usb: Fix use-after-free in delayed work during device removal
Vulnerability summary
CVE-2025-68781 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.7% of scored vulnerabilities.
No CVSS vector published; no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 10 · Related 6Timeline
- 13-01-2026PublishedVulnerability first disclosed.
- 02-09-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: usb: phy: fsl-usb: Fix use-after-free in delayed work during device removal The delayed work item otg_event is initialized in fsl_otg_conf() and scheduled under two conditions: 1. When a host controller binds to the OTG controller. 2. When the USB ID pin state changes (cable insertion/removal). A race condition occurs when the device is removed via fsl_otg_remove(): the fsl_otg instance may be freed while the delayed work is still pending or executing. This leads to use-after-free when the work function fsl_otg_event() accesses the already freed memory. The problematic scenario: (detach thread) | (delayed work) fsl_otg_remove() | kfree(fsl_otg_dev) //FREE| fsl_otg_event() | og = container_of(...) //USE | og-> //USE Fix this by calling disable_delayed_work_sync() in fsl_otg_remove() before deallocating the fsl_otg structure. This ensures the delayed work is properly canceled and completes execution prior to memory deallocation. This bug was identified through static analysis.
CVSS metrics
Risk metrics not yet published.
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.21% 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: not stated in public data.
Ubuntu159 products
- linuxAll versions (No fix recorded) | < 6.17.0-22.22
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.17.0-1012.12
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.69-1 | < 6.18.3-1
Linux1 product
- linux≥ 0807c500a1a6d7fa20cbd7bbe7fea14a66112463, < 69f9a0701abc3d1f8225074c56c27e6c16a37222 | ≥ 0807c500a1a6d7fa20cbd7bbe7fea14a66112463, < 2e7c47e2eb3cfeadf78a1ccbac8492c60d508f23 | ≥ 0807c500a1a6d7fa20cbd7bbe7fea14a66112463, < 41ca62e3e21e48c2903b3b45e232cf4f2ff7434f | 3.0
3 vendors · 161 products
