usb: cdns3 fix use-after-free at workaround 2

Answer in brief

CVE-2022-50034 records a High severity (CVSS 7.8) vulnerability in usb: cdns3 fix use-after-free at workaround 2. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 18, 2025Updated Aug 15, 2026Source checked Sep 30, 2026First seen by HOL Aug 15, 2026Material review Aug 15, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=6bbf87a131edd39040974f3843ff97e89310ebde <e65d9b7147d7be3504893ca7dfb85286bda83d40 \|\| >=6bbf87a131edd39040974f3843ff97e89310ebde <6d7ac60098b206d0472475b666cb09d556bec03d \|\| >=6bbf87a131edd39040974f3843ff97e89310ebde <c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a \|\| >=6bbf87a131edd39040974f3843ff97e89310ebde <6fd50446e7c9a98b4bcf96815f5c9602a16ea472 \|\| >=6bbf87a131edd39040974f3843ff97e89310ebde <7d602f30149a117eea260208b1661bc404c21dfd	e65d9b7147d7be3504893ca7dfb85286bda83d40, 6d7ac60098b206d0472475b666cb09d556bec03d, c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a, 6fd50446e7c9a98b4bcf96815f5c9602a16ea472, 7d602f30149a117eea260208b1661bc404c21dfd
Linux/Linuxgeneric	5.4	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to e65d9b7147d7be3504893ca7dfb85286bda83d40 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source 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().

Quoted source text, attributed separately from HOL analysis.