CVE-2026-64465
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)
usb: xhci: Fix sleep in atomic context in xhci_free_streams()
In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Fix sleep in atomic context in xhci_free_streams() When a USB device with active stream endpoints is disconnected, xhci_free_streams() is called from the hub_event workqueue to free the stream resources. It calls xhci_free_stream_info() while holding xhci->lock with irqs disabled. xhci_free_stream_info() invokes xhci_free_stream_ctx(), which calls dma_free_coherent() for large stream context arrays. dma_free_coherent() can sleep (e.g. via vunmap), triggering a BUG when called from atomic context. Call trace: dma_free_attrs+0x174/0x220 xhci_free_stream_info+0xd0/0x11c xhci_free_streams+0x278/0x37c usb_free_streams+0x98/0xc0 usb_unbind_interface+0x1b8/0x2f8 device_release_driver_internal+0x1d4/0x2cc device_release_driver+0x18/0x28 bus_remove_device+0x160/0x1a4 device_del+0x1ec/0x350 usb_disable_device+0x98/0x214 usb_disconnect+0xf0/0x35c hub_event+0xab4/0x19ec process_one_work+0x278/0x63c Fix this by saving the stream_info pointers and clearing the ep references under the lock, then calling xhci_free_stream_info() outside the lock where sleeping is allowed.
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) |
|---|---|---|---|---|---|
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | e623e4a203f56d5c57519a9a3cb29600551534ad | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | d107eb316144c5fb958486e7fe604cd7f1b35cda | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | 1e45aa722c4ce5663e987102aac18c8ad6a83fdd | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | 10666ac9c552990204e791af653abf8e9d9ff619 | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | f7b022ae07685e7526fc39f387ce65b5d309dd3b | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | f90586129cf9e1fbdb718ef602eea3f15dc1c31c | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | 93cd037da94fcb93183bfb2457e3a56d3eb4c8f4 | Unavailable | None listed |
| 8df75f42f8e67e2851cdcf6da91640fb881defd1 | affected | git | 42c37c4b75d38b51d84f31a8e29427f5e06a7c2a | 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) |
|---|---|---|---|---|---|
| 2.6.35 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.35 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.4 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |