CVE-2021-47509
Last modified
CVE-2021-47509 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Limit the period size to 16MB Set the practical limit to the period size (the fragment shift in OSS) instead of a full 31bit; a too large value could lead to the exhaust of memory as we allocate temporary buffers of the period size, too. As of this patch, we set to 16MB limit, which should cover all use cases.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Limit the period size to 16MB Set the practical limit to the period size (the fragment shift in OSS) instead of a full 31bit; a too large value could lead to the exhaust of memory as we allocate temporary buffers of the period size, too. As of this patch, we set to 16MB limit, which should cover all use cases.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | < 4.4.295 | — |
| Linux | Linux Kernel | >= 4.5, < 4.9.293 | — |
| Linux | Linux Kernel | >= 4.10, < 4.14.258 | — |
| Linux | Linux Kernel | >= 4.15, < 4.19.221 | — |
| Linux | Linux Kernel | >= 4.20, < 5.4.165 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.85 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.8 | — |
| Linux | Linux Kernel | 5.16 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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- CVE-2021-47512In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-47513In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-47514In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2021-47515In the Linux kernel, the following vulnerability has been re…5.5
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