UBUNTU-CVE-2024-39292
In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.
02 / AFFECTED SOFTWARE
Affected packages
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14 explicit affected versions
83 explicit affected versions
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72 explicit affected versions
11 explicit affected versions
1 explicit affected versions
45 explicit affected versions
4 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/a0fbbd36c156b9f7b2276871d499c9943dfe5101
- https://ubuntu.com/security/CVE-2024-39292
- https://ubuntu.com/security/notices/USN-6951-1
- https://ubuntu.com/security/notices/USN-6951-2
- https://ubuntu.com/security/notices/USN-6951-3
- https://ubuntu.com/security/notices/USN-6951-4
- https://ubuntu.com/security/notices/USN-6953-1
- https://ubuntu.com/security/notices/USN-6972-1
- https://ubuntu.com/security/notices/USN-6972-2
- https://ubuntu.com/security/notices/USN-6972-3
- https://ubuntu.com/security/notices/USN-6972-4
- https://ubuntu.com/security/notices/USN-6974-1
- https://ubuntu.com/security/notices/USN-6974-2
- https://ubuntu.com/security/notices/USN-6975-1
- https://ubuntu.com/security/notices/USN-6976-1
- https://ubuntu.com/security/notices/USN-6979-1
- https://ubuntu.com/security/notices/USN-7008-1
- https://ubuntu.com/security/notices/USN-7019-1
- https://ubuntu.com/security/notices/USN-7029-1
- https://www.cve.org/CVERecord?id=CVE-2024-39292