CVE-2024-36922

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: leer txq->read_ptr bajo bloqueo Si leemos txq->read_ptr sin bloqueo, podemos leer el mismo valor dos veces, luego obtener el bloqueo y reclamar desde allí a dos lugares diferentes, pero fundamentalmente reclama la misma entrada dos veces, lo que resulta en WARN_ONCE() un poco más tarde. Solucione eso leyendo txq->read_ptr bajo bloqueo.

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.

Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde discovered that an untrusted hypervisor could inject malicious #VC interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw is known as WeSee. A local attacker in control of the hypervisor could use this to expose sensitive information or possibly execute arbitrary code in the trusted execution environment. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.