CVE-2022-50034usb: cdns3 fix use-after-free at workaround 2
- 7.8HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 90% 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: cdns3 fix use-after-free at workaround 2 BUG: KFENCE: use-after-free read in __list_del_entry_valid+0x10/0xac cdns3_wa2_remove_old_request() { ... kfree(priv_req->request.buf); cdns3_gadget_ep_free_request(&priv_ep->endpoint, &priv_req->request); list_del_init(&priv_req->list); ^^^ use after free ... } cdns3_gadget_ep_free_request() free the space pointed by priv_req, but priv_req is used in the following list_del_init(). This patch move list_del_init() before cdns3_gadget_ep_free_request().
Timeline
ID reserved
By Linux
Published
- 14 months later
· 14 months 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 |
|---|---|---|---|
| NVDNVD · Analyzed | 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)
- 0.20% · top 90% of all CVEs (12 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 6bbf87a131edd39040974f3843ff97e89310ebde – < e65d9b7147d7be3504893ca7dfb85286bda83d40
- affected 6bbf87a131edd39040974f3843ff97e89310ebde – < 6d7ac60098b206d0472475b666cb09d556bec03d
- affected 6bbf87a131edd39040974f3843ff97e89310ebde – < c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a
- affected 6bbf87a131edd39040974f3843ff97e89310ebde – < 6fd50446e7c9a98b4bcf96815f5c9602a16ea472
- affected 6bbf87a131edd39040974f3843ff97e89310ebde – < 7d602f30149a117eea260208b1661bc404c21dfd
- affected 5.4
- unaffected < 5.4
- unaffected 5.4.211 – ≤ 5.4.*
- unaffected 5.10.138 – ≤ 5.10.*
- unaffected 5.15.63 – ≤ 5.15.*
- unaffected 5.19.4 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References
References5
- https://git.kernel.org/stable/c/e65d9b7147d7be3504893ca7dfb85286bda83d40 (opens in a new tab)
- https://git.kernel.org/stable/c/6d7ac60098b206d0472475b666cb09d556bec03d (opens in a new tab)
- https://git.kernel.org/stable/c/c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a (opens in a new tab)
- https://git.kernel.org/stable/c/6fd50446e7c9a98b4bcf96815f5c9602a16ea472 (opens in a new tab)
- https://git.kernel.org/stable/c/7d602f30149a117eea260208b1661bc404c21dfd (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-2022-55305 (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-2022-50034)Record last updated .