CVE-2026-93214: Linux vulnerability

CVE-2026-93214: usb: gadget: f_tcm: fix deadlock in usbg_make_tpg()

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_tcm: fix deadlock in usbg_make_tpg() usbg_make_tpg() held dep_lock while calling configfs_depend_item_unlocked(), which acquires the configfs root inode lock when operating across subsystems. This creates a circular lock dependency with configfs_rmdir(): dep_lock -> configfs root inode lock -> su_mutex -> dep_lock In usbg_make_tpg(), dep_lock only serialized the read of opts->ready, which is a monotonic flag that transitions from false to true exactly once (in tcm_set_name()) and never reverts. Remove dep_lock from usbg_make_tpg() entirely and use READ_ONCE/WRITE_ONCE to access opts->ready locklessly instead.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 19, 2026, 09:07 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 24, 2026, 15:10 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

0ADP providers

9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Sep 17, 2026, 16:02 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
Sep 24, 2026, 15:10 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 19, 2026, 09:07 UTC (UTC+00:00)

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277CVE reference, Linux
https://git.kernel.org/stable/c/3639438a4c83ffc2e564c8c010b92137c5d11cfaCVE reference, Linux
https://git.kernel.org/stable/c/78a14ea2284825055ab6c2a1f3489510f560f3a2CVE reference, Linux
https://git.kernel.org/stable/c/eef3e62f90d86c1c5651742f84ecc9db1814a893CVE reference, Linux
https://git.kernel.org/stable/c/f81a2da137b029a282b9bc64d2f267d242948659CVE reference, Linux
https://git.kernel.org/stable/c/6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9CVE reference, Linux
https://git.kernel.org/stable/c/d90b0f90e30cd59b36005a4016b15cf02bcd7fb2CVE reference, Linux
https://git.kernel.org/stable/c/9dbf74f4022f80f7669d2b3c22c5deb46c1b5674CVE reference, Linux

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51ad, 4bb8548df632187d5db50878e71804af5f7c51adunaffected

LinuxLinux4.5, 0, 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3affected

Weakness

CWE details

No CWE listed

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