5.5

CVE-2026-64334: linux Improper Locking

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-64334DEBIAN-CVE-2026-64334
Published 25-07-2026Last modified 17-08-2026
Open JSON

Vulnerability summary

CVE-2026-64334 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.5% 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
0.10%
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 32 · Related 32
OPENSUSE-SU-2026:11476-1OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23477-1SUSE-SU-2026:23481-1SUSE-SU-2026:23528-1SUSE-SU-2026:23529-1

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: serial: digi_acceleport: fix hard lockup on disconnect If submitting the OOB write urb fails persistently (e.g if the device is being disconnected) the driver would loop indefinitely with interrupts disabled. Check for urb submission errors when sending OOB commands to avoid hanging if, for example, open(), set_termios() or close() races with a physical disconnect. This is issue was flagged by Sashiko when reviewing an unrelated change to the driver.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.10%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

0.00 pp

From 0.10% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.10%

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

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.180-1 | < 6.12.96-1 | < 7.1.4-1
  • linux-6.12< 6.12.100-1~deb12u1
Linux2 products
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 6e51147c2744d15730084dc89cc99180d3de4184 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 6a8592ace932081ea11aea41c460a1ca0f6344a4 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5a82d842e8c35227d7227f19e5e654df1451782c | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < bcfeae431db9986c2b313e6a760f2ac8df61e138 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2067b3838da6e4af03bae3630414193188d754b2 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2b7dc482f859f2d027db07ff0efc1c5df5b3451a | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 79bc131df0e50f8f663c1fdbbe952aaf193a8d39 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5c1ea24b53bf3bfb859f0a05573997487975da23 | 2.6.12
  • linux_kernel≥ 2.6.12.1, < 5.10.261 | ≥ 5.11, < 5.15.212 | ≥ 5.16, < 6.1.178 | ≥ 6.2, < 6.6.145 | ≥ 6.7, < 6.12.96 | ≥ 6.13, < 6.18.39 | ≥ 6.19, < 7.1.4 | 2.6.12 | 2.6.12:rc2 | 2.6.12:rc3 | 2.6.12:rc4 | 2.6.12:rc5 | 7.2:rc1 | 7.2:rc2

3 vendors · 173 products

References

31 links
Show all 31 references