5.5

CVE-2026-31497: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-31497DEBIAN-CVE-2026-31497
Published 22-04-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-31497 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% 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
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1

Timeline

  1. 22-04-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: clamp SCO altsetting table indices btusb_work() maps the number of active SCO links to USB alternate settings through a three-entry lookup table when CVSD traffic uses transparent voice settings. The lookup currently indexes alts[] with data->sco_num - 1 without first constraining sco_num to the number of available table entries. While the table only defines alternate settings for up to three SCO links, data->sco_num comes from hci_conn_num() and is used directly. Cap the lookup to the last table entry before indexing it so the driver keeps selecting the highest supported alternate setting without reading past alts[].

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

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

Ubuntu145 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 312c4450fe23014665c163f480edd5ad2e27bbb8 | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 9dd13a8641de79bc1bc93da55cdd35259a002683 | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 476c9262b430c38c6a701a3b8176a3f48689085b | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 6fba3c3d48c927e55611a0f5ea34da88138ed0ff | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 834cf890d2c3d29cbfa1ee2376c40469c28ec297 | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 1019028eb124564cf7bca58a16f1df8a1ca30726 | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 21c254202f9d78abe0fcd642a92966deb92bd226 | ≥ baac6276c0a9f36f1fe1f00590ef00d2ba5ba626, < 129fa608b6ad08b8ab7178eeb2ec272c993aaccc | 5.8
  • linux_kernel≥ 5.8.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.131 | ≥ 6.7, < 6.12.80 | ≥ 6.13, < 6.18.21 | ≥ 6.19, < 6.19.11 | 5.8 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.11-1

3 vendors · 148 products

References

40 links
Show all 40 references