Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U H N H 7.1 .0024 15.5 —
AFFECTED Product Versions Fixed Linux 69842cba9ace84849bb9b8edcdf2cefccd97901c – — Linux 5.3 – 5.4.120
TIMELINE Feb 27 Reserved by Linux Feb 28 Published (CNA: Linux) Aug 4 RESCORED — CVE-2021-46993 (Linux). CVSS 7.8 → 7.1 (NVD).
In the Linux kernel, the following vulnerability has been resolved: sched: Fix out-of-bound access in uclamp Util-clamp places tasks in different buckets based on their clamp values for performance reasons. However, the size of buckets is currently computed using a rounding division, which can lead to an off-by-one error in some configurations. For instance, with 20 buckets, the bucket size will be 1024/20=51. A task with a clamp of 1024 will be mapped to bucket id 1024/51=20. Sadly, correct indexes are in range [0,19], hence leading to an out of bound memory access. Clamp the bucket id to fix the issue.
| Date | Event | Detail |
|---|---|---|
| February 27, 2024 | Reserved | Reserved by Linux |
| February 28, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2021-46993 (Linux). CVSS 7.8 → 7.1 (NVD). |
Authoritative record: CVE-2021-46993 at cve.org
Vendors: linux
Weaknesses: CWE-125
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-46993 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.