UBUNTU-CVE-2025-40001

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UBUNTU-CVE-2025-40001

Summary:

Details: In the Linux kernel, the following vulnerability has been resolved: scsi: mvsas: Fix use-after-free bugs in mvs_work_queue During the detaching of Marvell's SAS/SATA controller, the original code calls cancel_delayed_work() in mvs_free() to cancel the delayed work item mwq->work_q. However, if mwq->work_q is already running, the cancel_delayed_work() may fail to cancel it. This can lead to use-after-free scenarios where mvs_free() frees the mvs_info while mvs_work_queue() is still executing and attempts to access the already-freed mvs_info. A typical race condition is illustrated below: CPU 0 (remove) | CPU 1 (delayed work callback) mvs_pci_remove() | mvs_free() | mvs_work_queue() cancel_delayed_work() | kfree(mvi) | | mvi-> // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the delayed work item is properly canceled and any executing delayed work item completes before the mvs_info is deallocated. This bug was found by static analysis.

References: https://ubuntu.com/security/CVE-2025-40001, https://www.cve.org/CVERecord?id=CVE-2025-40001, https://git.kernel.org/linus/60cd16a3b7439ccb699d0bf533799eeb894fd217, https://git.kernel.org/stable/c/00d3af40b158ebf7c7db2b3bbb1598a54bf28127, https://git.kernel.org/stable/c/3c90f583d679c81a5a607a6ae0051251b6dee35b, https://git.kernel.org/stable/c/60cd16a3b7439ccb699d0bf533799eeb894fd217, https://git.kernel.org/stable/c/6ba7e73cafd155a5d3abf560d315f0bab2b9d89f, https://git.kernel.org/stable/c/c2c35cb2a31844f84f21ab364b38b4309d756d42, https://git.kernel.org/stable/c/feb946d2fc9dc754bf3d594d42cd228860ff8647, https://ubuntu.com/security/notices/USN-8029-1, https://ubuntu.com/security/notices/USN-8030-1, https://ubuntu.com/security/notices/USN-8033-1, https://ubuntu.com/security/notices/USN-8033-2, https://ubuntu.com/security/notices/USN-8033-3, https://ubuntu.com/security/notices/USN-8034-1, https://ubuntu.com/security/notices/USN-8033-4, https://ubuntu.com/security/notices/USN-8029-2, https://ubuntu.com/security/notices/USN-8033-5, https://ubuntu.com/security/notices/USN-8034-2, https://ubuntu.com/security/notices/USN-8048-1, https://ubuntu.com/security/notices/USN-8033-6, https://ubuntu.com/security/notices/USN-8033-7, https://ubuntu.com/security/notices/USN-8033-8, https://ubuntu.com/security/notices/USN-8029-3, https://ubuntu.com/security/notices/USN-8095-1, https://ubuntu.com/security/notices/USN-8100-1, https://ubuntu.com/security/notices/USN-8095-2, https://ubuntu.com/security/notices/USN-8095-3, https://ubuntu.com/security/notices/USN-8095-4, https://ubuntu.com/security/notices/USN-8125-1, https://ubuntu.com/security/notices/USN-8126-1, https://ubuntu.com/security/notices/USN-8095-5, https://ubuntu.com/security/notices/USN-8141-1, https://ubuntu.com/security/notices/USN-8163-1, https://ubuntu.com/security/notices/USN-8165-1, https://ubuntu.com/security/notices/USN-8163-2, https://ubuntu.com/security/notices/USN-8243-1, https://ubuntu.com/security/notices/USN-8261-1