5.5

CVE-2021-47270: usb: fix various gadgets null ptr deref on 10gbps cabling.

Analyzed
AliasesUBUNTU-CVE-2021-47270DEBIAN-CVE-2021-47270
Published 21-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47270 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% 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
0.23%
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 6 · Related 6
SUSE-SU-2024:2010-1SUSE-SU-2024:2183-1SUSE-SU-2024:2185-1SUSE-SU-2024:2360-1SUSE-SU-2024:2381-1SUSE-SU-2024:2561-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: fix various gadgets null ptr deref on 10gbps cabling. This avoids a null pointer dereference in f_{ecm,eem,hid,loopback,printer,rndis,serial,sourcesink,subset,tcm} by simply reusing the 5gbps config for 10gbps.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% 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.

Ubuntu85 products
  • linux< 4.15.0-156.163 | < 5.4.0-81.91
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1111.118 | < 5.4.0-1055.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < beb1e67a5ca8d69703c776db9000527f44c0c93c | ≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < 8cd5f45c1b769e3e9e0f4325dd08b6c3749dc7ee | ≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < 10770d2ac0094b053c8897d96d7b2737cd72f7c5 | ≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < b4903f7fdc484628d0b8022daf86e2439d3ab4db | ≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < 4b289a0f3033f465b4fd51ba995251a7867a2aa2 | ≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < f17aae7c4009160f0630a91842a281773976a5bc | ≥ eaef50c760576bca70b87fdc26eb87a3660529f8, < 90c4d05780d47e14a50e11a7f17373104cd47d25 | 4.6
  • linux_kernel≥ 4.6, < 4.9.273 | ≥ 4.10, < 4.14.237 | ≥ 4.15, < 4.19.195 | ≥ 4.20, < 5.4.126 | ≥ 5.5, < 5.10.44 | ≥ 5.11, < 5.12.11 | 5.13:rc1 | 5.13:rc2 | 5.13:rc3 | 5.13:rc4 | 5.13:rc5
Debian1 product
  • linux< 5.10.46-1

3 vendors · 88 products

References

11 links
Show all 11 references