CVE-2026-80923
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)
xhci: dbgtty: Fix unregister on tty_register_driver() failure
In the Linux kernel, the following vulnerability has been resolved: xhci: dbgtty: Fix unregister on tty_register_driver() failure If tty_register_driver() fails, it drops the reference, but fails to set the global dbc_tty_driver to NULL, causing the unregister to be called again when module exits. On module unload dbc_tty_exit() only gates its cleanup on the driver pointer being non-NULL, so it operates on the already-freed driver: module_init(xhci_hcd_init) xhci_hcd_init() xhci_dbc_init() [return value ignored] dbc_tty_init() tty_register_driver() fails tty_driver_kref_put() -> driver freed (dbc_tty_driver left dangling) ... module_exit(xhci_hcd_fini) xhci_hcd_fini() xhci_dbc_exit() dbc_tty_exit() if (dbc_tty_driver) -> true (dangling) tty_unregister_driver() -> use-after-free
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) |
|---|---|---|---|---|---|
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | 01b7bc0938061f2fd46e0094f6483d8c6c02f7d3 | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | 43635ff6401ca0e0ed21875379eeded921321525 | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | eaca2814f32b9872a332326324b9e83e01f156d2 | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | 943f976c93e70563b132f5585ff68b08c89641a2 | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | 0d0faf3cc44c4d86fc6faf5cea972c0fbe00b922 | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | 33ed35ca629477f57e0dd1d77d6df96cf5a9eb55 | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | 0e469b94fbba8eb03666da41dd1082b793c50c1a | Unavailable | None listed |
| 4521f16139409cdf9462c7325d43454462cff6c3 | affected | git | a916fa66a43e10f63198b6ce978badffc678821a | 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) |
|---|---|---|---|---|---|
| 5.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.9 | Unavailable | None listed |
| 5.15.220 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.187 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.156 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.108 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.49 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.13 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2.3 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |