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CVE-2022-48619 is a moderate-severity denial-of-service flaw in the Linux kernel input subsystem's input_set_capability() function. The function failed to validate event codes against the bitmap bounds for the specified event type, allowing a low-privileged local attacker to cause a kernel panic. Red Hat assigned a CVSS v3.1 score of 5.5, reflecting high availability impact with no confidentiality or integrity impact.
Upstream fixed the defect in Linux kernel 5.17.10 through commit 409353cbe9fe48f6bc196114c442b1cff05a39bc, which adds per-event-type maximum-code validation and rejects invalid values. Red Hat remediated affected RHEL 8 kernel and kernel-rt packages through advisories RHSA-2024:7000 and RHSA-2024:7001; RHEL 9 variants are not affected, while RHEL 6 and 7 are outside support scope.
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Red Hat released RHSA-2024:7000 for the RHEL 8 kernel and RHSA-2024:7001 for the RHEL 8 kernel-rt, addressing CVE-2022-48619. The flaw could allow a low-privileged local attacker to panic the kernel through an out-of-range input event code.
Linux commit 409353cbe9fe48f6bc196114c442b1cff05a39bc added per-event-type maximum-code validation in input_set_capability(). Invalid event codes are logged and rejected rather than being used to set a capability.
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