CVE-2026-98108
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: fix chan mode for LE_CONN_REQ + EXT_FLOWCTL pchan
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix chan mode for LE_CONN_REQ + EXT_FLOWCTL pchan l2cap_new_connection() sets default value of channel mode to match the parent channel. l2cap_le_connect_req() left this at the default, and created L2CAP_MODE_EXT_FLOWCTL channels if listening pchan has that mode. This causes FLAG_DEFER_SETUP channels to reply to L2CAP_LE_CONN_REQ with L2CAP_ECRED_CONN_RSP, which is incorrect. It can also result to stack OOB write (of l2cap_alloc_cid determined values) in l2cap_ecred_rsp_defer(), as l2cap_le_connect_req() does not limit maximum number of deferred channels or check for duplicate ident. Fix by setting chan->mode correctly in l2cap_le_connect_req(). Also check channel mode in l2cap_ecred_rsp_defer(), and do WARN_ON_ONCE instead of OOB write to make it less brittle.
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) |
|---|---|---|---|---|---|
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | ad0f44a3f1f688558ed876a0702bc2c82b0df689 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 564ae0e05e598aa895b9dbd18cb7d6eb64752869 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | aab17938998b29e75c3324763411aef3e300fc67 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 0e1fc7cab95ad958e55d70a5dfaaea687c9c639f | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 1074bcc57f741223f9fa82ce6afe5c3d783e4d10 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 5d5a625cbc854d4c4f68e4b16fcf6e682d9a9ed1 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 6cb79e6499228cfdbd4b3301371ce74d01cd2f80 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 4ef05db5b08b176a551b4a6287372045998806b0 | 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) |
|---|---|---|---|---|---|
| 5.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.7 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.111 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.53 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.7 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |