CVE-2024-36244

Advisory lineage Upstream: 0 Downstream: 27
Modified
Published: 21 Jun 2024, 10:18
Last modified:23 May 2026, 15:46

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 Jun 2024, 10:18
Published
Vulnerability first disclosed
23 May 2026, 15:46
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Affected Systems

  • linux•linux

    ≥ b5b73b26b3ca34574124ed7ae9c5ba8391a7f176, < 34d83c3e6e97867ae061d14eb52123404aab1cbc | ≥ b5b73b26b3ca34574124ed7ae9c5ba8391a7f176, < b939d1e04a90248b4cdf417b0969c270ceb992b2 | ≥ b5b73b26b3ca34574124ed7ae9c5ba8391a7f176, < 91f249b01fe490fce11fbb4307952ca8cce78724 | ≥ b5b73b26b3ca34574124ed7ae9c5ba8391a7f176, < fb66df20a7201e60f2b13d7f95d031b31a8831d3 | 83bd58952b2b8543d8c48d1453975ab47a0a7504 | 817ff50796c5e364c879596509f83fcba194bb6f | ≥ 5.4.68, < 5.5 | ≥ 5.8.12, < 5.9 | 5.9

  • linux•linux_kernel

    ≥ 5.4.68, < 5.5 | ≥ 5.8.12, < 5.9 | ≥ 5.9.1, < 6.1.119 | ≥ 6.2, < 6.6.33 | ≥ 6.7, < 6.9.4 | 5.9 | 5.9:rc7 | 5.9:rc8 | 6.10:rc1

References (5)