CVE-2026-90022usb: gadget: f_midi2: fix use-after-free in string attribute show path
- 7.8HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_midi2: fix use-after-free in string attribute show path f_midi2_opts_str_show() takes the string lock internally, but its callers dereference the opts->info.<field> pointer before calling it, outside the lock. This races with f_midi2_opts_str_store(), which frees the old string under opts->lock when the attribute is written concurrently, the show path can read a pointer that gets freed before the lock inside str_show() is even taken. Change f_midi2_opts_str_show() to take a pointer to the string field, matching the existing pattern in f_midi2_opts_str_store(), and dereference it only after the lock is held. Update all three callers (iface_name, block name, and the EP string option macro) accordingly.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days 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 · Received | 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)
- 0.17% · top 94% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 29ee7a4dddd5caa18d1cef000f20c6af43f762f1 – < f9bdf4c4f6410a1dfafafa383a0e21069372657f
- affected 29ee7a4dddd5caa18d1cef000f20c6af43f762f1 – < d11f3300b39e2daad2f0d9d66ddcc39a156cb594
- affected 29ee7a4dddd5caa18d1cef000f20c6af43f762f1 – < e89e30f0b5d3004fe5955250bd8b04f3733e32ce
- affected 29ee7a4dddd5caa18d1cef000f20c6af43f762f1 – < 49fab5e1bdb205c36c965d0e9677bc40d282d3a2
- affected 29ee7a4dddd5caa18d1cef000f20c6af43f762f1 – < fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b
- affected 6.6
- unaffected < 6.6
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/f9bdf4c4f6410a1dfafafa383a0e21069372657f (opens in a new tab)
- https://git.kernel.org/stable/c/d11f3300b39e2daad2f0d9d66ddcc39a156cb594 (opens in a new tab)
- https://git.kernel.org/stable/c/e89e30f0b5d3004fe5955250bd8b04f3733e32ce (opens in a new tab)
- https://git.kernel.org/stable/c/49fab5e1bdb205c36c965d0e9677bc40d282d3a2 (opens in a new tab)
- https://git.kernel.org/stable/c/fed0aa7c6eaedc6c0d4e362fc91724aa47be4a7b (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)
- EUVD EUVD-2026-80630 (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://cveledger.app/cve/CVE-2026-90022)Record last updated .