CVE-2026-98458Bluetooth: ISO: release unused CIS holds after channel attach
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: release unused CIS holds after channel attach hci_bind_cis() and hci_connect_cis() return one hci_conn hold for the ISO layer. A new channel association consumes that hold, which is eventually released by iso_conn_free(). There are two cases where iso_chan_add() does not create an association: it returns success when the socket is already attached to the same iso_conn, and it returns -EBUSY when another socket is attached. The hold returned for the current call is unused in both cases. This occurs when deferred setup calls iso_connect_cis() again for its existing socket, or when another socket attempts to reuse the CIS. Detect the idempotent case while the connection is locked and release the unused hold after iso_chan_add(). Also release it on -EBUSY. Do not drop it for other errors: a newly allocated iso_conn releases the transferred hold when its last temporary reference is put.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 69997d50ec574be816b4ee8f9cee52ebbd53f8bd – < e0e8b70207eaf27aee0a05ec5bf2d1b6bcb004d1
- affected 69997d50ec574be816b4ee8f9cee52ebbd53f8bd – < ed4c026cc4094dfb7a329b9d8df0ddd0be1b2458
- affected 69997d50ec574be816b4ee8f9cee52ebbd53f8bd – < e5fcca51177f224604e3a8c926ffd5edbeb58b09
- affected 69997d50ec574be816b4ee8f9cee52ebbd53f8bd – < 0fcd4dad555c96e0bd3a1b8c569f989be85c7341
- affected 6.6
- unaffected < 6.6
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.55 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/e0e8b70207eaf27aee0a05ec5bf2d1b6bcb004d1 (opens in a new tab)
- https://git.kernel.org/stable/c/ed4c026cc4094dfb7a329b9d8df0ddd0be1b2458 (opens in a new tab)
- https://git.kernel.org/stable/c/e5fcca51177f224604e3a8c926ffd5edbeb58b09 (opens in a new tab)
- https://git.kernel.org/stable/c/0fcd4dad555c96e0bd3a1b8c569f989be85c7341 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103698 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-98458)Record last updated .