CVE-2026-90093
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Bluetooth: L2CAP: access chan->conn safely in get/setsockopt
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: access chan->conn safely in get/setsockopt Since commit b66774b48dd9 ("Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref") l2cap_chan::conn has held reference and remains non-NULL also after the corresponding hci_conn is deleted. In this state accessing various fields eg. hci_conn::hdev is invalid, which leads to KASAN crash in l2cap_sock_setsockopt() access of conn->hcon->hdev. Check l2cap_chan::conn.hcon corresponds to an alive hci_conn before trying to use it in l2cap_sock.c. Hold l2cap_chan_lock() in getsockopt/setsockopt to ensure it stays alive, and to avoid data races in l2cap_chan fields.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 91047a4396a8b1857a6f712a90cf33ec0012b189 | affected | git | 19e154d794eb4d33d99ca4a087b1cea9d5e65786 | Unavailable | None listed |
| 0b0e2bf39cf99e458d991b9df253727e036a7d7d | affected | git | 3af72bf8f73c519ee562e6963d5ff8e678924f93 | Unavailable | None listed |
| d3b739db5dc6f688a60d56da872fabaf65246032 | affected | git | 8460dc49c9756a1e9288218060b4d41e1b704905 | Unavailable | None listed |
| b66774b48dd98f07254951f74ea6f513efe7ff8b | affected | git | f49321c85785178214fd67f2e9b4b73d6363783b | Unavailable | None listed |
| b66774b48dd98f07254951f74ea6f513efe7ff8b | affected | git | ca2c4c26498643f421d35ffe258fafbd3ed461c3 | Unavailable | None listed |
| 8f90405a4a6f1f1880dc07996b47bf57c712bd8a | affected | git | Unavailable | Unavailable | None listed |
| 32d783cafb46ff3ca58e6f9fd62c9c5f35eaf26b | affected | git | Unavailable | Unavailable | None listed |
| 8922c7940bae9ce4b1736dddb6362370793835c2 | affected | git | Unavailable | Unavailable | None listed |
| 50c38d9f42a529691e4e67ea9cedf4f0bfc8d277 | affected | git | Unavailable | Unavailable | None listed |
| 6.6.145 | affected | semver | 6.6.160 | Unavailable | None listed |
| 6.12.97 | affected | semver | 6.12.114 | Unavailable | None listed |
| 6.18.39 | affected | semver | 6.18.57 | Unavailable | None listed |
| 5.10.265 | affected | semver | 5.11 | Unavailable | None listed |
| 5.15.216 | affected | semver | 5.16 | Unavailable | None listed |
| 6.1.183 | affected | semver | 6.2 | Unavailable | None listed |
| 7.1.4 | affected | semver | 7.2 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 7.2 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.57 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |