5.5

CVE-2026-64349: usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup()

Analyzed
AliasesUBUNTU-CVE-2026-64349DEBIAN-CVE-2026-64349
Published 25-07-2026Last modified 17-08-2026

Vulnerability summary

CVE-2026-64349 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · -0.04 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 9 · Related 7
MGASA-2026-0336MGASA-2026-0337OPENSUSE-SU-2026:11476-1USN-8887-1USN-8887-2USN-8887-3

Timeline

  1. 25-07-2026
    PublishedVulnerability first disclosed.
  2. 17-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup() The dwc3_ulpi_setup() calls the register read and write calls with dwc3->regs when both these calls take the dwc3 structure directly. Chnage these two calls to fix the following sparse warning, and possibly a nasty bug in the dwc3_ulpi_setup() code: drivers/usb/dwc3/core.c:796:45: warning: incorrect type in argument 1 (different address spaces) drivers/usb/dwc3/core.c:796:45: expected struct dwc3 *dwc drivers/usb/dwc3/core.c:796:45: got void [noderef] __iomem *regs drivers/usb/dwc3/core.c:798:40: warning: incorrect type in argument 1 (different address spaces) drivers/usb/dwc3/core.c:798:40: expected struct dwc3 *dwc drivers/usb/dwc3/core.c:798:40: got void [noderef] __iomem *regs

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.16% 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu112 products
  • linux< 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 476ee6389120e1900290b46081b3a12b54e05672, < 41a4e80d5af04855e68ac88f5e2cd07fa67287f8 | ≥ 9accc68b1cf0a2b220f51d53641128bb32598070, < 4349e487a1149ff33b65d53427b8aca57f2e4578 | ≥ 9accc68b1cf0a2b220f51d53641128bb32598070, < e0f844d9d74200d311c6438a0f04270834ba5365 | ≥ 6.18.32, < 6.18.40 | 7.0
  • linux_kernel≥ 6.18.32, < 6.18.40 | ≥ 7.0, < 7.1.4 | 7.2:rc1 | 7.2:rc2
Debian1 product
  • linux< 7.1.4-1

3 vendors · 115 products

References

13 links
Show all 13 references