CVE-2021-47511 (GCVE-0-2021-47511)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:09 – Updated: 2026-05-11 13:56
VLAI
Title
ALSA: pcm: oss: Fix negative period/buffer sizes
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < be8869d388593e57223ad39297c8e54be632f2f2 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 502e1146873d870f87da3b8f93d6bf2de5f38d0c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8af815ab052eaf74addbbfb556d63ce2137c0e1b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f96c0959c1ee92adc911c10d6ec209af50105049 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f12c8a7515f641885677960af450082569a87243 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 02b2b691b77cd7b951fa7b6c9d44d4e472cdc823 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 00a860678098fcd9fa8db2b5fb9d2ddf4776d4cc (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9d2479c960875ca1239bcb899f386970c13d9cfe (git)
Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.4.295 , ≤ 4.4.* (semver)
Unaffected: 4.9.293 , ≤ 4.9.* (semver)
Unaffected: 4.14.258 , ≤ 4.14.* (semver)
Unaffected: 4.19.221 , ≤ 4.19.* (semver)
Unaffected: 5.4.165 , ≤ 5.4.* (semver)
Unaffected: 5.10.85 , ≤ 5.10.* (semver)
Unaffected: 5.15.8 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
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  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.