CVE-2026-63976
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: clear chan->ident on ECRED reconfiguration success
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: clear chan->ident on ECRED reconfiguration success l2cap_ecred_reconf_rsp() returns early on success without clearing chan->ident. Every other L2CAP response handler (l2cap_ecred_conn_rsp, l2cap_le_connect_rsp, l2cap_config_rsp) clears chan->ident after a successful transaction to prevent the channel from matching subsequent responses with the recycled ident value. A remote attacker that completed a reconfiguration as the peer can replay a failure response with the stale ident, causing the kernel to match and destroy the already-established channel via l2cap_chan_del(chan, ECONNRESET). Clear chan->ident for all matching channels on success, and harden the failure path by using l2cap_chan_hold_unless_zero() consistent with other L2CAP handlers (l2cap_le_command_rej, __l2cap_get_chan_by_ident).
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 | 59f5ecf6ad5c4db6ae81965a96156954a3b0d89a | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | ae0152d77d101c920769934fb102b18de0c6f526 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | c2afd2613fda90107c5e2fe8e855627451749c78 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | cc2b4f749de09975bfa06e58bbbad2f6acd4c79c | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 3b5b5f423b4fd23404a393bda8adba3cd6f74ef1 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | f39049304ba655ffcbb92edbdf8c51a1f1210bed | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 8e7977afaef37c6bd2b2654f1bce6ab40d471147 | Unavailable | None listed |
| 15f02b91056253e8cdc592888f431da0731337b8 | affected | git | 00e1950716c6ed67d74777b2db286b0fa23b4be9 | 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 |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |