CVE-2026-98459: Linux kernel · Bluetooth: ISO: balance the parent hold in hci_bind_bis()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ff28e6c67143c76ef50c3eac01f2fad411705f71 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in ff28e6c67143c76ef50c3eac01f2fad411705f71, bbcd723ee7a84bc868142fd57717af88e54e555a, 6.6.158 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available in Linux kernel version 6.6.158 and later. Users should upgrade to version 6.6.158 or apply the corresponding patches to resolve the issue.
Description
A use-after-release issue in the Linux kernel's Bluetooth ISO subsystem was fixed by properly balancing reference holds on parent connections in the hci_bind_bis() function. The flaw could cause a parent connection to be disconnected while still in use by a socket.
References
- git.kernel.org/stable/c/ff28e6c67143c76ef50c3eac01f2fad411705f71 (opens in a new tab)
- git.kernel.org/stable/c/03a91cdf6862fb351a74f035ad21e70112438552 (opens in a new tab)
- git.kernel.org/stable/c/4e49206d9574a4c109480198e73aea34ad0ed7f6 (opens in a new tab)
- git.kernel.org/stable/c/bbcd723ee7a84bc868142fd57717af88e54e555a (opens in a new tab)
- git.kernel.org/stable/c/4c94557dd02569efa6c1072a0439addaef9a5224 (opens in a new tab)