Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1110 CNY

100%
Buy Us a Coffee

CVE-2025-37918— Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()

AI Predicted 5.5 Difficulty: Moderate EPSS 0.07% · P20

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinux20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6< 2e8d44ebaa7babdd5c5ab50ca275826e241920d6affected
20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6< b70b41591ec48c78ec6a885e1f57bfc4029e5e13affected
20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6< 8563d9fabd8a4b726ba7acab4737c438bf11a059affected
20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6< 0317b033abcd1d8dd2798f0e2de5e84543d0bd22affected
6.4affected
< 6.4unaffected
6.6.90≤ 6.6.*unaffected
6.12.28≤ 6.12.*unaffected
… +2 more rows
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2025-37918

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue() A NULL pointer dereference can occur in skb_dequeue() when processing a QCA firmware crash dump on WCN7851 (0489:e0f3). [ 93.672166] Bluetooth: hci0: ACL memdump size(589824) [ 93.672475] BUG: kernel NULL pointer dereference, address: 0000000000000008 [ 93.672517] Workqueue: hci0 hci_devcd_rx [bluetooth] [ 93.672598] RIP: 0010:skb_dequeue+0x50/0x80 The issue stems from handle_dump_pkt_qca() returning 0 even when a dump packet is successfully processed. This is because it incorrectly forwards the return value of hci_devcd_init() (which returns 0 on success). As a result, the caller (btusb_recv_acl_qca() or btusb_recv_evt_qca()) assumes the packet was not handled and passes it to hci_recv_frame(), leading to premature kfree() of the skb. Later, hci_devcd_rx() attempts to dequeue the same skb from the dump queue, resulting in a NULL pointer dereference. Fix this by: 1. Making handle_dump_pkt_qca() return 0 on success and negative errno on failure, consistent with kernel conventions. 2. Splitting dump packet detection into separate functions for ACL and event packets for better structure and readability. This ensures dump packets are properly identified and consumed, avoiding double handling and preventing NULL pointer access.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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btusb模块在处理QCA固件崩溃转储时错误返回0，可能导致空指针取消引用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6 ~ 2e8d44ebaa7babdd5c5ab50ca275826e241920d6 -
LinuxLinux 6.4 -

II. Public POCs for CVE-2025-37918

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-37918

请登录查看更多情报信息。

Same Patch Batch · Linux · 2025-05-20 · 95 CVEs total

CVE-2025-379249.8 CRITICALksmbd: fix use-after-free in kerberos authentication
CVE-2025-37958mm/huge_memory: fix dereferencing invalid pmd migration entry
CVE-2025-37954smb: client: Avoid race in open_cached_dir with lease breaks
CVE-2025-37953sch_htb: make htb_deactivate() idempotent
CVE-2025-37949xenbus: Use kref to track req lifetime
CVE-2025-37948arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs
CVE-2025-37947ksmbd: prevent out-of-bounds stream writes by validating *pos
CVE-2025-37946s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs
CVE-2025-37945net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY
CVE-2025-37950ocfs2: fix panic in failed foilio allocation
CVE-2025-37957KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-37956ksmbd: prevent rename with empty string
CVE-2025-37960memblock: Accept allocated memory before use in memblock_double_array()
CVE-2025-37959bpf: Scrub packet on bpf_redirect_peer
CVE-2025-37961ipvs: fix uninit-value for saddr in do_output_route4
CVE-2025-37963arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users
CVE-2025-37962ksmbd: fix memory leak in parse_lease_state()
CVE-2025-37964x86/mm: Eliminate window where TLB flushes may be inadvertently skipped
CVE-2025-37965drm/amd/display: Fix invalid context error in dml helper
CVE-2025-37967usb: typec: ucsi: displayport: Fix deadlock

Showing top 20 of 95 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37918

No comments yet

Leave a comment