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CVE-2024-26801

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Avoid potential use-after-free in hci_error_reset While handling the HCI_EV_HARDWARE_ERROR event, if the underlying BT controller is not responding, the GPIO reset mechanism would free the hci_dev and lead to a use-after-free in hci_error_reset. Here's the call trace observed on a ChromeOS device with Intel AX201: queue_work_on+0x3e/0x6c __hci_cmd_sync_sk+0x2ee/0x4c0 [bluetooth <HASH:3b4a6>] ? init_wait_entry+0x31/0x31 __hci_cmd_sync+0x16/0x20 [bluetooth <HASH:3b4a 6>] hci_error_reset+0x4f/0xa4 [bluetooth <HASH:3b4a 6>] process_one_work+0x1d8/0x33f worker_thread+0x21b/0x373 kthread+0x13a/0x152 ? pr_cont_work+0x54/0x54 ? kthread_blkcg+0x31/0x31 ret_from_fork+0x1f/0x30 This patch holds the reference count on the hci_dev while processing a HCI_EV_HARDWARE_ERROR event to avoid potential crash.

Related Files

Ubuntu Security Notice USN-6778-1
Posted May 17, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6778-1 - Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel
systems | linux, ubuntu
advisories | CVE-2021-46939, CVE-2023-47233, CVE-2023-52524, CVE-2023-52566, CVE-2023-52602, CVE-2024-26614, CVE-2024-26801
SHA-256 | 5a2b8f3e7c01bf9c18ee07e2832ea0ee3f8ecf967fad1e117b272bd91c9ddf00
Ubuntu Security Notice USN-6774-1
Posted May 17, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6774-1 - Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service. Sander Wiebing, Alvise de Faveri Tron, Herbert Bos, and Cristiano Giuffrida discovered that the Linux kernel mitigations for the initial Branch History Injection vulnerability were insufficient for Intel processors. A local attacker could potentially use this to expose sensitive information.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-0001, CVE-2023-47233, CVE-2023-52601, CVE-2023-52602, CVE-2023-52615, CVE-2024-2201, CVE-2024-26614, CVE-2024-26635, CVE-2024-26801
SHA-256 | 879e950c4cc102e3739561be7468b79c78e99aa24cc7b8cac33139378491991e
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