8.8

CVE-2026-63974: linux Uncontrolled Resource Consumption

CVSS: 8.8v3.1HighUndergoing analysis
AliasesUBUNTU-CVE-2026-63974DEBIAN-CVE-2026-63974
Published 19-07-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-63974 is a high (CVSS 8.8) Uncontrolled Resource Consumption vulnerability in linux. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.32%
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 28 · Related 27
OPENSUSE-SU-2026:21555-1RHSA-2026:83207SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close Since hci_dev_close_sync() can now be called during the reset path, we should also set HCI_CMD_DRAIN_WORKQUEUE. This avoids queuing timeouts while the hdev workqueue is being drained.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

0.00 pp

From 0.32% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.32%

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

Ubuntu140 products
  • linux< 6.8.0-146.146 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1066.69 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.94-1 | < 7.0.12-1
Linux1 product
  • linux≥ 877afadad2dce8aae1f2aad8ce47e072d4f6165e, < 9cebe4680bb9a72f80c6541eb24af06db7a1fbc9 | ≥ 877afadad2dce8aae1f2aad8ce47e072d4f6165e, < 47330cc875b36a1cf7b3543cb2cf90a7c603ce0e | ≥ 877afadad2dce8aae1f2aad8ce47e072d4f6165e, < 60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff | ≥ 877afadad2dce8aae1f2aad8ce47e072d4f6165e, < 525daaea459fc215f432de1b8debbd9144bf97b0 | 4bf367fa1fefabdf14938d0ac9ed60020389112e | 3b382555706558f5c0587862b6dc03e96a252bba | ≥ 5.18.18, < 5.19 | ≥ 5.19.2, < 5.20 | 6.0

3 vendors · 142 products

References

23 links
Show all 23 references