CVE-2021-47409: usb: dwc2: check return value after calling platform_get_resource()
Vulnerability summary
CVE-2021-47409 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.6% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 10 · Related 10Timeline
- 21-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu88 products
- linuxAll versions (No fix recorded) | < 4.15.0-166.174 | < 5.4.0-92.103
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1118.125 | < 5.4.0-1061.64
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 348becdcc3196addbe882e8a10451744e489e389, < 4b7f4a0eb92bf37bea4cd838c7f83ea42823ca8b | ≥ 348becdcc3196addbe882e8a10451744e489e389, < a7182993dd8e09f96839ddc3ac54f9b37370d282 | ≥ 348becdcc3196addbe882e8a10451744e489e389, < 8b9c1c33e51d0959f2aec573dfbac0ffd3f5c0b7 | ≥ 348becdcc3196addbe882e8a10451744e489e389, < 2754fa3b73df7d0ae042f3ed6cfd9df9042f6262 | ≥ 348becdcc3196addbe882e8a10451744e489e389, < 337f00a0bc62d7cb7d10ec0b872c79009a1641df | ≥ 348becdcc3196addbe882e8a10451744e489e389, < 856e6e8e0f9300befa87dde09edb578555c99a82 | 4.11
- linux_kernel< 4.14.250 | ≥ 4.15, < 4.19.210 | ≥ 4.20, < 5.4.152 | ≥ 5.5, < 5.10.72 | ≥ 5.11, < 5.14.11 | 5.15:rc1 | 5.15:rc2
Debian1 product
- linux< 5.14.12-1
3 vendors · 91 products
