- 8.1HighCVSS base score
- 0.27%Exploitation in 30 daysEPSS · top 81% 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: eir: Fix OOB read in eir_get_service_data() eir_get_service_data() walks the advertising data for a Service Data field with a matching UUID. On a mismatch it advances: eir += dlen; eir_len -= dlen; eir_get_data() reports dlen as the field's data length, but the field spans dlen + 2 bytes once its length and type bytes count, and more when non-Service-Data fields were skipped to reach it. The pointer lands correctly on the next field. eir_len does not, and the shortfall compounds across fields until eir_get_data() reads the length and type bytes of a "field" past the end of the buffer. For an ISO broadcast sink that buffer is hcon->le_per_adv_data[], filled from the periodic advertising reports of a remote broadcaster. A PA payload packed with mismatching Service Data fields walks off the array into the rest of struct hci_conn. A drifted field that matches the BAA UUID puts those bytes in iso_pi(sk)->base, where user space reads them back with getsockopt(BT_ISO_BASE). Recompute eir_len from the end of the buffer each iteration.
Timeline
ID reserved
By Linux
Published
- 38 days later
· 38 days 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Received | 3.1 | High8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
- affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a – < b6902adf81ea2ce14b1040dd97b6980050a8125a
- affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a – < 1a28aae7f1fc8c06c0d02f153541be4fc7bacb74
- affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a – < 815fc98c227a78cbd93d4c29f2833705b7c2bc0f
- affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a – < c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50
- affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a – < bb56e97bd67614238c1c0a4084704ccadbb875b4
- affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a – < 4beb198bc59b242404a47c21990bc84165052c8a
- affected 5.19
- unaffected < 5.19
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.109 – ≤ 6.12.*
- unaffected 6.18.50 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/b6902adf81ea2ce14b1040dd97b6980050a8125a (opens in a new tab)
- https://git.kernel.org/stable/c/1a28aae7f1fc8c06c0d02f153541be4fc7bacb74 (opens in a new tab)
- https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f (opens in a new tab)
- https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50 (opens in a new tab)
- https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4 (opens in a new tab)
- https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a (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-2026-76495 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89583)Record last updated .