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CVE-2026-80721

Bluetooth: ISO: ensure no dangling hcon references in iso_conn

HIGH
8.8
CVSS Score
Published: August 28, 2026 at 06:53 AM UTC
Updated: October 16, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: ensure no dangling hcon references in iso_conn After iso_conn_del(), ISO sockets should not dereference the hcon any more. Currently, clearing iso_conn::hcon relies on iso_conn_del() releasing the last reference to the iso_conn. Simplify this by explicitly clearing conn->hcon in iso_conn_del(), to avoid more complex reasoning on races about who holds the last reference.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.11.116.12.26.13a58d0f5dac322e16cc75334d000666512341bde5dc26097bdb864a0d5955b9a25e43376ffc1af99bf53e7489273dc2bb307bf50f319b3762d45534f0
Vendor states this is fixed in aa9f7cb2bd3a2be998ceb739fc9a2f986eba43eb (fixed)
Vendor states this is fixed in cdce8af9291d8a1f8916c271de029bf558d9e8ec (fixed)
Vendor states this is fixed in e941799c31f68e67ce0976efb38a79101f921b64 (fixed)
Affected range stops below 6.12, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.13 (unaffected)
Vendor states this is fixed in 6.18.44 (unaffected)
Vendor states this is fixed in 7.1.8 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: cverecord
https://git.kernel.org/stable/c/e941799c31f68e67ce0976efb38a79101f921b64
Source: cverecord
https://git.kernel.org/stable/c/cdce8af9291d8a1f8916c271de029bf558d9e8ec
Source: cverecord
https://git.kernel.org/stable/c/aa9f7cb2bd3a2be998ceb739fc9a2f986eba43eb

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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