Security readout for executives and security teams
CVE-2021-32399 is a Linux kernel Bluetooth issue involving a race condition when removing an HCI controller. The source bundle does not establish business impact, exploitability, or affected distributions beyond Linux through 5.12.2. Treat exposure as kernel maintenance risk where Bluetooth/HCI functionality exists. Potentially exposed systems run Linux kernels through 5.12.2 with relevant Bluetooth HCI controller paths present. Distribution backports may change exposure, so version strings alone are insufficient. Appliances using Linux kernels may also be affected if vendors confirm impact. Prioritize through normal kernel patch governance unless your environment depends heavily on Bluetooth-enabled Linux systems or affected vendor appliances. There is no provided evidence of active exploitation or a critical severity rating, but kernel race conditions warrant timely remediation. Mitigation focus: Apply vendor-supported kernel updates that include the referenced upstream fix.; Review Debian LTS advisories if using Debian-based long-term support kernels.; Check NetApp guidance for affected appliance or storage environments..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2021-32399 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/torvalds/linux/commit/e2cb6b891ad2b8caa9131e3be70f45243df82a80CVE reference · x_refsource_MISC
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e2cb6b891ad2b8caa9131e3be70f45243df82a80CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210622-0006/CVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security updateCVE reference · mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security updateCVE reference · mailing-list, x_refsource_MLIST
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.