Ubuntu.comUB:CVE-2021-47509CVE-2021-47509
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure-4.15 | < any | UNKNOWN |
References
git.kernel.org/linus/8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2 (5.16-rc5)
git.kernel.org/stable/c/2e54cf6794bf82a54aaefc78da13819aea9cd28a
git.kernel.org/stable/c/35a3e511032146941085f87dd9fb5b82ea5c00a2
git.kernel.org/stable/c/76f19e4cbb548e28547f8c328aa0bfb3a10222d3
git.kernel.org/stable/c/8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2
git.kernel.org/stable/c/ad45babf7886e7a212ee1d5eda9ef49f696db43c
git.kernel.org/stable/c/b02a41eebcc36d4f07196780f2e165ca2c499257
git.kernel.org/stable/c/be55f306396cd62c6889286a7194fd8b53363aeb
git.kernel.org/stable/c/d1bb703ad050de9095f10b2d3416c32921ac6bcc
launchpad.net/bugs/cve/CVE-2021-47509
nvd.nist.gov/vuln/detail/CVE-2021-47509
security-tracker.debian.org/tracker/CVE-2021-47509
www.cve.org/CVERecord?id=CVE-2021-47509
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