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CVE-2025-21937— Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未检查mgmt_alloc_skb返回值，可能导致空指针解引用。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux ba17bb62ce415950753c19d16bb43b2bd3701158< 37785a01040cb5d11ed0ddbcbf78491fcd073161 affected
ba17bb62ce415950753c19d16bb43b2bd3701158< c5845c73cbacf5704169283ef29ca02031a36564 affected
ba17bb62ce415950753c19d16bb43b2bd3701158< 88310caff68ae69d0574859f7926a59c1da2d60b affected
ba17bb62ce415950753c19d16bb43b2bd3701158< 69fb168b88e4d62cb31cdd725b67ccc5216cfcaf affected
ba17bb62ce415950753c19d16bb43b2bd3701158< f2176a07e7b19f73e05c805cf3d130a2999154cb affected
0f526a6d3e9347d94c2c0b5292a3cb3b25115019 affected
5.17.2< 5.18 affected
5.18 affected
… +6 more rows
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I. Basic Information for CVE-2025-21937

Vulnerability Information
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Vulnerability Title
Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未检查mgmt_alloc_skb返回值，可能导致空指针解引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ba17bb62ce415950753c19d16bb43b2bd3701158 ~ 37785a01040cb5d11ed0ddbcbf78491fcd073161 -
Linux Linux 5.18 -

II. Public POCs for CVE-2025-21937

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III. Intelligence Information for CVE-2025-21937

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Patches & Fixes for CVE-2025-21937 (2)

Same Patch Batch · Linux · 2025-04-01 · 93 CVEs total

CVE-2025-21927 9.8 CRITICAL nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()
CVE-2025-21954 9.8 CRITICAL netmem: prevent TX of unreadable skbs
CVE-2025-21969 8.8 HIGH Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd
CVE-2025-21967 8.8 HIGH ksmbd: fix use-after-free in ksmbd_free_work_struct
CVE-2025-21945 8.8 HIGH ksmbd: fix use-after-free in smb2_lock
CVE-2025-21946 8.8 HIGH ksmbd: fix out-of-bounds in parse_sec_desc()
CVE-2025-21972 8.8 HIGH net: mctp: unshare packets when reassembling
CVE-2025-21955 8.8 HIGH ksmbd: prevent connection release during oplock break notification
CVE-2025-21947 8.1 HIGH ksmbd: fix type confusion via race condition when using ipc_msg_send_request
CVE-2025-21984 7.8 HIGH mm: fix kernel BUG when userfaultfd_move encounters swapcache
CVE-2025-21926 7.8 HIGH net: gso: fix ownership in __udp_gso_segment
CVE-2025-21965 7.8 HIGH sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()
CVE-2025-21958 7.8 HIGH Revert "openvswitch: switch to per-action label counting in conntrack"
CVE-2025-21914 7.8 HIGH slimbus: messaging: Free transaction ID in delayed interrupt scenario
CVE-2025-21949 7.8 HIGH LoongArch: Set hugetlb mmap base address aligned with pmd size
CVE-2025-21939 7.8 HIGH drm/xe/hmm: Don't dereference struct page pointers without notifier lock
CVE-2025-21919 7.8 HIGH sched/fair: Fix potential memory corruption in child_cfs_rq_on_list
CVE-2025-21934 7.8 HIGH rapidio: fix an API misues when rio_add_net() fails
CVE-2025-21923 7.8 HIGH HID: hid-steam: Fix use-after-free when detaching device
CVE-2025-21924 7.8 HIGH net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get_cycle returns an e

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21937

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