CVE-2021-38166
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-38166
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-38166.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-38166
- Aliases
-
- A-197155069
- PUB-A-197155069
- Downstream
- Related
- Published
- 2021-08-07T18:15:07Z
- Modified
- 2025-08-09T20:01:28Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAPSYSADMIN capability.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6
- https://security.netapp.com/advisory/ntap-20210909-0001/
- https://www.debian.org/security/2021/dsa-4978
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUVLBJKZMWA3E3YXSH4SZ7BOYGJP4GXP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UL6CH5M5PRLMA3KPBX4LPUO6Z73GRISO/
- https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu%40gmail.com/