CVE-2024-36244
Vulnerability Summary
Timeline
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: 0.25%• Percentile: 16%
Affected Systems
- debian•linux
all | < 6.1.119-1 | < 6.9.7-1 | < 6.9.7-1
- debian•linux-6.1
< 6.1.119-1~deb11u1
- ubuntu•linux
all | all | < 6.8.0-44.44
- ubuntu•linux-allwinner-5.19
all
- ubuntu•linux-aws
all | all | < 6.8.0-1015.16
- ubuntu•linux-aws-5.0
all
- ubuntu•linux-aws-5.11
all
- ubuntu•linux-aws-5.13
all
- ubuntu•linux-aws-5.15
all
- ubuntu•linux-aws-5.19
all
- ubuntu•linux-aws-5.3
all
- ubuntu•linux-aws-5.4
all
- ubuntu•linux-aws-5.8
all
- ubuntu•linux-aws-6.2
all
- ubuntu•linux-aws-6.5
all
- ubuntu•linux-aws-6.8
< 6.8.0-1015.16~22.04.1
- ubuntu•linux-aws-fips
all
- ubuntu•linux-azure
all | all | all | < 6.8.0-1014.16
- ubuntu•linux-azure-5.11
all
- ubuntu•linux-azure-5.13
all
- ubuntu•linux-azure-5.15
all
- ubuntu•linux-azure-5.19
all
- ubuntu•linux-azure-5.3
all
- ubuntu•linux-azure-5.4
all
- ubuntu•linux-azure-5.8
all
- ubuntu•linux-azure-6.2
all
- ubuntu•linux-azure-6.5
all
- ubuntu•linux-azure-6.8
< 6.8.0-1014.16~22.04.1
- ubuntu•linux-azure-edge
all
- ubuntu•linux-azure-fde
all | all
- ubuntu•linux-azure-fde-5.19
all
- ubuntu•linux-azure-fde-6.2
all
- ubuntu•linux-azure-fips
all
- ubuntu•linux-bluefield
all | all
- ubuntu•linux-fips
all | < 6.8.0-78.78+fips1
- ubuntu•linux-gcp
all | all | all | < 6.8.0-1014.16
- ubuntu•linux-gcp-5.11
all
- ubuntu•linux-gcp-5.13
all
- ubuntu•linux-gcp-5.15
all
- ubuntu•linux-gcp-5.19
all
- ubuntu•linux-gcp-5.3
all
- ubuntu•linux-gcp-5.4
all
- ubuntu•linux-gcp-5.8
all
- ubuntu•linux-gcp-6.2
all
- ubuntu•linux-gcp-6.5
all
- ubuntu•linux-gcp-6.8
< 6.8.0-1014.16~22.04.1
- ubuntu•linux-gcp-fips
all
- ubuntu•linux-gke
all | all | < 6.8.0-1010.13
- ubuntu•linux-gke-4.15
all
- ubuntu•linux-gke-5.15
all
Showing first 50 affected entries in server-rendered view.
References (16)
- https://git.kernel.org/stable/c/34d83c3e6e97867ae061d14eb52123404aab1cbc
- https://git.kernel.org/stable/c/b939d1e04a90248b4cdf417b0969c270ceb992b2
- https://git.kernel.org/stable/c/91f249b01fe490fce11fbb4307952ca8cce78724
- https://git.kernel.org/stable/c/fb66df20a7201e60f2b13d7f95d031b31a8831d3
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://ubuntu.com/security/CVE-2024-36244
- https://www.cve.org/CVERecord?id=CVE-2024-36244
- https://git.kernel.org/linus/fb66df20a7201e60f2b13d7f95d031b31a8831d3
- https://ubuntu.com/security/notices/USN-6999-1
- https://ubuntu.com/security/notices/USN-7004-1
- https://ubuntu.com/security/notices/USN-7005-1
- https://ubuntu.com/security/notices/USN-7008-1
- https://ubuntu.com/security/notices/USN-7005-2
- https://ubuntu.com/security/notices/USN-6999-2
- https://ubuntu.com/security/notices/USN-7029-1
- https://security-tracker.debian.org/tracker/CVE-2024-36244