{"id":"CVE-2021-47016","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nm68k: mvme147,mvme16x: Don't wipe PCC timer config bits\n\nDon't clear the timer 1 configuration bits when clearing the interrupt flag\nand counter overflow. As Michael reported, \"This results in no timer\ninterrupts being delivered after the first. Initialization then hangs\nin calibrate_delay as the jiffies counter is not updated.\"\n\nOn mvme16x, enable the timer after requesting the irq, consistent with\nmvme147.","modified":"2026-03-15T22:42:44.178383Z","published":"2024-02-29T23:15:07.307Z","references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967"},{"type":"FIX","url":"https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21"},{"type":"FIX","url":"https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576"},{"type":"FIX","url":"https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878"},{"type":"FIX","url":"https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293dae"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47016.json","unresolved_ranges":[{"events":[{"introduced":"5.2"},{"fixed":"5.4.119"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.37"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.11.21"}]},{"events":[{"introduced":"5.12"},{"fixed":"5.12.4"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}