5.5

CVE-2026-23307: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-23307DEBIAN-CVE-2026-23307
Published 25-03-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-23307 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.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 31 · Related 29
MGASA-2026-0097MGASA-2026-0098SUSE-SU-2026:21834-1SUSE-SU-2026:2238-1USN-8567-1USN-8574-1

Timeline

  1. 25-03-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: ems_usb_read_bulk_callback(): check the proper length of a message When looking at the data in a USB urb, the actual_length is the size of the buffer passed to the driver, not the transfer_buffer_length which is set by the driver as the max size of the buffer. When parsing the messages in ems_usb_read_bulk_callback() properly check the size both at the beginning of parsing the message to make sure it is big enough for the expected structure, and at the end of the message to make sure we don't overflow past the end of the buffer for the next message.

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

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 702171adeed3607ee9603ec30ce081411e36ae42, < aed172a2e2330131f0977d2acd3ec8883f413ec1 | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < f10177e6c4575aedaea580ce67d792fab7a2235e | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < c703bbf8e9b4947e111c88d2ed09236a6772a471 | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < 1818974e1b5ef200e27f144c8cb8a246420bb54d | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < 18f75b9cbdc3703f15965425ab69dee509b07785 | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < 1cf469026d4a2308eaa91d04dca4a900d07a5c2e | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < 2833e13e2b099546abf5d40a483b4eb04ddd1f7b | ≥ 702171adeed3607ee9603ec30ce081411e36ae42, < 38a01c9700b0dcafe97dfa9dc7531bf4a245deff | 2.6.32
  • linux_kernel≥ 2.6.32, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.77 | ≥ 6.13, < 6.18.17 | ≥ 6.19, < 6.19.7 | 7.0:rc1 | 7.0:rc2
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.8-1

3 vendors · 160 products

References

40 links
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