OESA-2023-1368

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OESA-2023-1368

Summary: kernel security update

Details: The Linux Kernel, the operating system core itself. Security Fix(es): An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process.(CVE-2023-31084) A use after free flaw was found in hfsplus_put_super in fs/hfsplus/super.c in the Linux Kernel. This flaw could allow a local user to cause a denial of service problem.(CVE-2023-2985)

References: https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1368, https://nvd.nist.gov/vuln/detail/CVE-2023-31084, https://nvd.nist.gov/vuln/detail/CVE-2023-2985