CVE-2021-47511
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…
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/00a860678098fcd9fa8db2b5fb9d2ddf4776d4ccPatch
- https://git.kernel.org/stable/c/02b2b691b77cd7b951fa7b6c9d44d4e472cdc823Patch
- https://git.kernel.org/stable/c/502e1146873d870f87da3b8f93d6bf2de5f38d0cPatch
- https://git.kernel.org/stable/c/8af815ab052eaf74addbbfb556d63ce2137c0e1bPatch
- https://git.kernel.org/stable/c/9d2479c960875ca1239bcb899f386970c13d9cfePatch
- https://git.kernel.org/stable/c/be8869d388593e57223ad39297c8e54be632f2f2Patch
- https://git.kernel.org/stable/c/f12c8a7515f641885677960af450082569a87243Patch
- https://git.kernel.org/stable/c/f96c0959c1ee92adc911c10d6ec209af50105049Patch
- https://git.kernel.org/stable/c/00a860678098fcd9fa8db2b5fb9d2ddf4776d4ccPatch
- https://git.kernel.org/stable/c/02b2b691b77cd7b951fa7b6c9d44d4e472cdc823Patch
- https://git.kernel.org/stable/c/502e1146873d870f87da3b8f93d6bf2de5f38d0cPatch
- https://git.kernel.org/stable/c/8af815ab052eaf74addbbfb556d63ce2137c0e1bPatch
- https://git.kernel.org/stable/c/9d2479c960875ca1239bcb899f386970c13d9cfePatch
- https://git.kernel.org/stable/c/be8869d388593e57223ad39297c8e54be632f2f2Patch
- https://git.kernel.org/stable/c/f12c8a7515f641885677960af450082569a87243Patch
- https://git.kernel.org/stable/c/f96c0959c1ee92adc911c10d6ec209af50105049Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.