VulnSocial

CVE-2026-63871General

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix data-race on iso_pi fields in hci_get_route calls iso_connect_bis(), iso_connect_cis(), iso_listen_bis(), and iso_conn_big_sync() call hci_get_route() using iso_pi(sk)->dst, iso_pi(sk)->src, and iso_pi(sk)->src_type without holding lock_sock(). These fields may be modified concurrently by connect() or setsockopt() on the same socket, resulting in data-races reported by KCSAN. Fix this by snapshotting the required fields under lock_sock() before calling hci_get_route(). BUG: KCSAN: data-race in memcmp+0x45/0xb0 race at unknown origin, with read to 0xffff8880122135cf of 1 bytes by task 333 on cpu 1: memcmp+0x45/0xb0 hci_get_route+0x27e/0x490 iso_connect_cis+0x4c/0xa10 iso_sock_connect+0x60e/0xb30 __sys_connect_file+0xbd/0xe0 __sys_connect+0xe0/0x110 __x64_sys_connect+0x40/0x50 x64_sys_call+0xcad/0x1c60 do_syscall_64+0x133/0x590 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Back to dashboard
0.5/ 10 priority

Sources & remediation

Other references

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-19); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-19: 1Mentions · 2026-07-20: 1Patch / Workaround · 2026-07-20: 1Technical Details · 2026-07-20: 107-1907-20
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-07-191
General1
2026-07-201
Disclosure1
Full discourse2 posts
  • Windows Forum@windowsforum
    Disclosure

    🐧 CVE-2026-63871 targets Linux Bluetooth LE Audio—not Windows. No CVSS score yet, but admins should patch systems using ISO sockets before “no rating” becomes “why is Bluetooth broken?” https://windowsforum.com/threads/cve-2026-63871-update-linux-bluetooth-le-audio-kernels.439569/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernel #BluetoothLeAudio #CveSecurity #Wsl2 https://t.co/hMyezLaS6d

    Post summary

    The post announces CVE‑2026‑63871, indicating it targets Linux Bluetooth LE Audio and emphasizes patching via ISO sockets, though it lacks CVSS scoring, PoC, or exploit details.

    0000038
    1.3K followersView on X
  • MalwareObserver@MalwareObserver
    General

    🐛 VULNERABILITIES CVE Notify: 🚨 [CVE-2026-63871](https://git.kernel.org/stable/c/859bb1f4cb615d98c9c1ab2bd76ebb0b8fe46020) In the... https://git.kernel.org/stable/c/859bb1f4cb615d98c9c1ab2bd76ebb0b8fe46020 #CVE #ZeroDay #PatchManagement

    Post summary

    The post announces CVE-2026-63871 and links to a kernel commit, but offers no details on exploitation, patches, or technical specifics.

    0000031
    12 followersView on X

Explore more

Back to dashboard