CVE-2025-21937

MEDIUMNVD 5.55.5—

5.5

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()

Add check for the return value of mgmt_alloc_skb() in mgmt_remote_name() to prevent null pointer dereference.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 5.0%
KEV: Not listed

Published

April 1, 2025

Last Modified

November 3, 2025

References (6)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37785a01040cb5d11ed0ddbcbf78491fcd073161
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/69fb168b88e4d62cb31cdd725b67ccc5216cfcaf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88310caff68ae69d0574859f7926a59c1da2d60b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5845c73cbacf5704169283ef29ca02031a36564
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2176a07e7b19f73e05c805cf3d130a2999154cb
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Patch Availability(18)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1039.42.1) @ noble	2026-05-30	ubuntu
ubuntu	linux-virtual-hwe-24.04-edge (6.11.0-28.28) @ oracular	2026-05-30	ubuntu
ubuntu	linux-tools-lowlatency-hwe-22.04-edge (6.8.0-84.84.1~22.04.1) @ jammy	2026-05-30	ubuntu
ubuntu	linux-tools-raspi-6.8 (6.8.0-1039.43) @ noble	2026-05-30	ubuntu
ubuntu	linux-tools-raspi-realtime-6.8 (6.8.0-2031.32) @ noble	2026-05-30	ubuntu
ubuntu	linux-tools-ibm-lts-24.04 (6.8.0-1037.37) @ noble	2026-05-30	ubuntu
ubuntu	linux-tools-realtime-6.8.1 (6.8.1-1034.35) @ noble	2026-05-30	ubuntu
ubuntu	linux-tools-azure-6.11 (6.11.0-1018.18) @ oracular	2026-05-30	ubuntu
ubuntu	linux-tools-gcp-edge (6.8.0-1040.42~22.04.1) @ jammy	2026-05-30	ubuntu
ubuntu	linux-tools-lowlatency-64k (6.11.0-1015.16) @ oracular	2026-05-30	ubuntu
ubuntu	linux-tools-realtime-hwe-22.04 (6.8.1-1034.35~22.04.1) @ jammy	2026-05-30	ubuntu
ubuntu	linux-tools-oem-24.04b (6.11.0-1024.24) @ noble	2026-05-30	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.8.0-84.84~22.04.1) @ jammy	2026-05-30	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.8.0-85.85~22.04.1) @ jammy	2026-05-30	ubuntu
ubuntu	linux-tools-oracle-edge (6.8.0-1037.38~22.04.1) @ jammy	2026-05-30	ubuntu
ubuntu	linux-tools-oracle-lts-24.04 (6.8.0-1037.38) @ noble	2026-05-30	ubuntu
ubuntu	linux-tools-azure-nvidia-lts-24.04 (6.8.0-1025.27) @ noble	2026-05-30	ubuntu
ubuntu	linux-tools-azure-lts-24.04 (6.8.0-1038.44) @ noble	2026-05-30	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-476NULL Pointer Dereference

All Vendor Advisories

(19)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:24 UTCepss_batch
2026-06-07 15:24 UTCepss_batch
2026-06-06 13:47 UTCepss_batch
2026-06-06 13:47 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-30 08:26 UTCEG score recompute
2026-05-30 08:26 UTCVendor advisory

Frequently asked(5)

What is CVE-2025-21937?

CVE-2025-21937 is a medium vulnerability published on April 1, 2025. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Add check for mgmtallocskb() in mgmtremotename() Add check for the return value of mgmtallocskb() in mgmtremotename() to prevent null pointer dereference.

When was CVE-2025-21937 disclosed?

CVE-2025-21937 was first published in the National Vulnerability Database on April 1, 2025, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-21937 actively exploited?

CVE-2025-21937 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-21937?

CVE-2025-21937 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2025-21937?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-21937, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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