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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-31408— Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold

CVSS 8.8 · High EPSS 0.30% · P23

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d57384e27d1ebf0047e3f00a6e1181b8be9857a2affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b0a7da0e3f7442545f071499beb36374714bb9deaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 45aaca995e4a7a05b272a58e7ab2fff4f611b8f1affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 108b81514d8f2535eb16651495cefb2250528db3affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7197462e90b8ce15caa1ae15d4bc2bb8cd21b11eaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< e76e8f0581ef555eacc11dbb095e602fb30a5361affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 598dbba9919c5e36c54fe1709b557d64120cb94baffected
2.6.12affected
… +8 more rows
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-31408

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a reference to the socket. A concurrent close() can free the socket between the lock release and the subsequent sk->sk_state access, resulting in a use-after-free. Other functions in the same file (sco_sock_timeout(), sco_conn_del()) correctly use sco_sock_hold() to safely hold a reference under the lock. Fix by using sco_sock_hold() to take a reference before releasing the lock, and adding sock_put() on all exit paths.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于未在释放锁前持有套接字引用，可能导致释放后重用。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ d57384e27d1ebf0047e3f00a6e1181b8be9857a2 -
LinuxLinux 2.6.12 -

II. Public POCs for CVE-2026-31408

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-31408

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-31408 (1)

Same Patch Batch · Linux · 2026-04-06 · 6 CVEs total

CVE-2026-314059.8 CRITICALmedia: dvb-net: fix OOB access in ULE extension header tables
CVE-2026-314098.8 HIGHksmbd: unset conn->binding on failed binding request
CVE-2026-314067.8 HIGHxfrm: Fix work re-schedule after cancel in xfrm_nat_keepalive_net_fini()
CVE-2026-314077.1 HIGHnetfilter: conntrack: add missing netlink policy validations
CVE-2026-31410ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-31408

No comments yet

Leave a comment