7.8

CVE-2022-50034: usb: cdns3 fix use-after-free at workaround 2

Analyzed
AliasesUBUNTU-CVE-2022-50034DEBIAN-CVE-2022-50034
Published 18-06-2025Last modified 15-08-2026

Vulnerability summary

CVE-2022-50034 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 4
RHSA-2023:2458SUSE-SU-2025:02264-1SUSE-SU-2025:02321-1SUSE-SU-2025:02322-1SUSE-SU-2025:02537-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 15-08-2026
    Last modifiedVulnerability information updated.

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().

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu77 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 6bbf87a131edd39040974f3843ff97e89310ebde, < e65d9b7147d7be3504893ca7dfb85286bda83d40 | ≥ 6bbf87a131edd39040974f3843ff97e89310ebde, < 6d7ac60098b206d0472475b666cb09d556bec03d | ≥ 6bbf87a131edd39040974f3843ff97e89310ebde, < c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a | ≥ 6bbf87a131edd39040974f3843ff97e89310ebde, < 6fd50446e7c9a98b4bcf96815f5c9602a16ea472 | ≥ 6bbf87a131edd39040974f3843ff97e89310ebde, < 7d602f30149a117eea260208b1661bc404c21dfd | 5.4
  • linux_kernel≥ 5.3, < 5.4.211 | ≥ 5.5, < 5.10.138 | ≥ 5.11, < 5.15.63 | ≥ 5.16, < 5.19.4
Debian1 product
  • linux< 6.0.2-1

3 vendors · 80 products

References

8 links