发布于3月6日3月6日 Members Debian: CVE-2024-36244: linux, linux-6.1 -- security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/21/2024 Created 12/03/2024 Added 12/02/2024 Modified 01/03/2025 Description In the Linux kernel, the following vulnerability has been resolved: net/sched: taprio: extend minimum interval restriction to entire cycle too It is possible for syzbot to side-step the restriction imposed by the blamed commit in the Fixes: tag, because the taprio UAPI permits a cycle-time different from (and potentially shorter than) the sum of entry intervals. We need one more restriction, which is that the cycle time itself must be larger than N * ETH_ZLEN bit times, where N is the number of schedule entries. This restriction needs to apply regardless of whether the cycle time came from the user or was the implicit, auto-calculated value, so we move the existing "cycle == 0" check outside the "if "(!new->cycle_time)" branch. This way covers both conditions and scenarios. Add a selftest which illustrates the issue triggered by syzbot. Solution(s) debian-upgrade-linux debian-upgrade-linux-6-1 References https://attackerkb.com/topics/cve-2024-36244 CVE - 2024-36244 DSA-5818-1
