7.8

CVE-2026-31758: usb: usbtmc: Flush anchored URBs in usbtmc_release

Modified
AliasesUBUNTU-CVE-2026-31758DEBIAN-CVE-2026-31758
Published 01-05-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-31758 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
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 129 · Related 126
LSN-0122-1MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21555-1SUSE-SU-2026:22108-1SUSE-SU-2026:22137-1

Showing 100 of 129.

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: usbtmc: Flush anchored URBs in usbtmc_release When calling usbtmc_release, pending anchored URBs must be flushed or killed to prevent use-after-free errors (e.g. in the HCD giveback path). Call usbtmc_draw_down() to allow anchored URBs to be completed.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.17% 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.

Ubuntu153 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≥ 4f3c8d6eddc272b386464524235440a418ed2029, < 959ef329071136e4335b54822fe2f607659b4569 | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < e189d443767f7cd390c52f2e122e1fc41c7562d6 | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < 7fa8f61bab3fb75b5deba8a0f3abb74dc5068d9f | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < 95e09b07e50290254b28b8395509473104518f8c | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < d13318dec0c1e0e2ac16f8ecbd522db14cea4bb1 | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < 977b632db51d231dec0bc571089a5c2402674139 | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < d40198de50232e04c14c6e2092e896766c95ea48 | ≥ 4f3c8d6eddc272b386464524235440a418ed2029, < 8a768552f7a8276fb9e01d49773d2094ace7c8f1 | 4.19
  • linux_kernel≥ 4.19, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.12-1

3 vendors · 156 products

References

39 links
Show all 39 references