CVE-2024-36244

Medium

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.

Package Linux Kernel
Published 2024-06-21
Last modified 2025-11-03
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.4.68, 5.8.12, 5.9 and later are affected. Fixed in 6.1.119, 6.6.33, 6.9.4, 6.10 and their respective stable series.

Affected from
≥ 5.4.68 ≥ 5.8.12 ≥ 5.9
Fixed in
✓ 6.1.119 6.1.x ✓ 6.6.33 6.6.x ✓ 6.9.4 6.9.x ✓ 6.10

References

5 total

Frequently asked questions

  • What is CVE-2024-36244?

    CVE-2024-36244 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.4.68 onward and has been patched in 6.1.119, 6.6.33, 6.9.4 and others. CVE-2024-36244 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-36244?

    CVE-2024-36244 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2024-36244?

    Yes. CVE-2024-36244 has been patched. Fixed versions include 6.1.119, 6.6.33, 6.9.4 and others. If you are running Linux kernel 5.4.68 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-36244 actively exploited?

    No. CVE-2024-36244 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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