CVE-2021-47509

linux: In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Limit the period size to 16MB S...

CVE-2021-47509 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47509, released May 24, 2024. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0024
15th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 5.15.15-1 DEBIAN-CVE-2021-47509 May 24, 2024
linux · Debian 13.5 (trixie) 5.15.15-1 DEBIAN-CVE-2021-47509 May 24, 2024
linux · Debian 14 5.15.15-1 DEBIAN-CVE-2021-47509 May 24, 2024

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