CVE-2026-64465 (GCVE-0-2026-64465)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-25 08:51
VLAI
Title
usb: xhci: Fix sleep in atomic context in xhci_free_streams()
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < e623e4a203f56d5c57519a9a3cb29600551534ad (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < d107eb316144c5fb958486e7fe604cd7f1b35cda (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < 1e45aa722c4ce5663e987102aac18c8ad6a83fdd (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < 10666ac9c552990204e791af653abf8e9d9ff619 (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < f7b022ae07685e7526fc39f387ce65b5d309dd3b (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < f90586129cf9e1fbdb718ef602eea3f15dc1c31c (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < 93cd037da94fcb93183bfb2457e3a56d3eb4c8f4 (git)
Affected: 8df75f42f8e67e2851cdcf6da91640fb881defd1 , < 42c37c4b75d38b51d84f31a8e29427f5e06a7c2a (git)
Create a notification for this product.
Linux Linux Affected: 2.6.35
Unaffected: 0 , < 2.6.35 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc3 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix sleep in atomic context in xhci_free_streams()\n\nWhen a USB device with active stream endpoints is disconnected,\nxhci_free_streams() is called from the hub_event workqueue to\nfree the stream resources.  It calls xhci_free_stream_info()\nwhile holding xhci-\u003elock with irqs disabled.\n\nxhci_free_stream_info() invokes xhci_free_stream_ctx(), which\ncalls dma_free_coherent() for large stream context arrays.\n\ndma_free_coherent() can sleep (e.g. via vunmap), triggering\na BUG when called from atomic context.\n\nCall trace:\n dma_free_attrs+0x174/0x220\n xhci_free_stream_info+0xd0/0x11c\n xhci_free_streams+0x278/0x37c\n usb_free_streams+0x98/0xc0\n usb_unbind_interface+0x1b8/0x2f8\n device_release_driver_internal+0x1d4/0x2cc\n device_release_driver+0x18/0x28\n bus_remove_device+0x160/0x1a4\n device_del+0x1ec/0x350\n usb_disable_device+0x98/0x214\n usb_disconnect+0xf0/0x35c\n hub_event+0xab4/0x19ec\n process_one_work+0x278/0x63c\n\nFix this by saving the stream_info pointers and clearing the\nep references under the lock, then calling xhci_free_stream_info()\noutside the lock where sleeping is allowed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:51:31.160Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "usb: xhci: Fix sleep in atomic context in xhci_free_streams()",
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    "cveId": "CVE-2026-64465",
    "datePublished": "2026-07-25T08:51:31.160Z",
    "dateReserved": "2026-07-19T15:36:31.790Z",
    "dateUpdated": "2026-07-25T08:51:31.160Z",
    "state": "PUBLISHED"
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It calls xhci_free_stream_info()\\nwhile holding xhci-\u003elock with irqs disabled.\\n\\nxhci_free_stream_info() invokes xhci_free_stream_ctx(), which\\ncalls dma_free_coherent() for large stream context arrays.\\n\\ndma_free_coherent() can sleep (e.g. via vunmap), triggering\\na BUG when called from atomic context.\\n\\nCall trace:\\n dma_free_attrs+0x174/0x220\\n xhci_free_stream_info+0xd0/0x11c\\n xhci_free_streams+0x278/0x37c\\n usb_free_streams+0x98/0xc0\\n usb_unbind_interface+0x1b8/0x2f8\\n device_release_driver_internal+0x1d4/0x2cc\\n device_release_driver+0x18/0x28\\n bus_remove_device+0x160/0x1a4\\n device_del+0x1ec/0x350\\n usb_disable_device+0x98/0x214\\n usb_disconnect+0xf0/0x35c\\n hub_event+0xab4/0x19ec\\n process_one_work+0x278/0x63c\\n\\nFix this by saving the stream_info pointers and clearing the\\nep references under the lock, then calling xhci_free_stream_info()\\noutside the lock where sleeping is allowed.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/host/xhci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"e623e4a203f56d5c57519a9a3cb29600551534ad\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"d107eb316144c5fb958486e7fe604cd7f1b35cda\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"1e45aa722c4ce5663e987102aac18c8ad6a83fdd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"10666ac9c552990204e791af653abf8e9d9ff619\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"f7b022ae07685e7526fc39f387ce65b5d309dd3b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"f90586129cf9e1fbdb718ef602eea3f15dc1c31c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"93cd037da94fcb93183bfb2457e3a56d3eb4c8f4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8df75f42f8e67e2851cdcf6da91640fb881defd1\",\"lessThan\":\"42c37c4b75d38b51d84f31a8e29427f5e06a7c2a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/host/xhci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.35\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.35\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/10666ac9c552990204e791af653abf8e9d9ff619\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1e45aa722c4ce5663e987102aac18c8ad6a83fdd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/42c37c4b75d38b51d84f31a8e29427f5e06a7c2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/93cd037da94fcb93183bfb2457e3a56d3eb4c8f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d107eb316144c5fb958486e7fe604cd7f1b35cda\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e623e4a203f56d5c57519a9a3cb29600551534ad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f7b022ae07685e7526fc39f387ce65b5d309dd3b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f90586129cf9e1fbdb718ef602eea3f15dc1c31c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T15:58:49Z",
      "cve": "CVE-2026-64465",
      "id": "CVE-2026-64465",
      "initial_release_date": "2026-07-25T15:58:49Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64465",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64465.json",
      "version": "2"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.