CVE - CVE-2024-36244

CVE-ID
CVE-2024-36244	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/34d83c3e6e97867ae061d14eb52123404aab1cbc URL:https://git.kernel.org/stable/c/34d83c3e6e97867ae061d14eb52123404aab1cbc MISC:https://git.kernel.org/stable/c/91f249b01fe490fce11fbb4307952ca8cce78724 URL:https://git.kernel.org/stable/c/91f249b01fe490fce11fbb4307952ca8cce78724 MISC:https://git.kernel.org/stable/c/b939d1e04a90248b4cdf417b0969c270ceb992b2 URL:https://git.kernel.org/stable/c/b939d1e04a90248b4cdf417b0969c270ceb992b2 MISC:https://git.kernel.org/stable/c/fb66df20a7201e60f2b13d7f95d031b31a8831d3 URL:https://git.kernel.org/stable/c/fb66df20a7201e60f2b13d7f95d031b31a8831d3
Assigning CNA
kernel.org
Date Record Created
20240621	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240621)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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