CVE-2021-47511
Last modified
CVE-2021-47511 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: Fix negative period/buffer sizes The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers. This patch changes the code to handle with ssize_t and adds the proper error checks appropriately.. 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: Fix negative period/buffer sizes The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers. This patch changes the code to handle with ssize_t and adds the proper error checks appropriately.
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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