Vulnerability Description
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 CAP_SYS_ADMIN capability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.13.8 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403PatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu%40gmail.com/
- https://security.netapp.com/advisory/ntap-20210909-0001/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403PatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu%40gmail.com/
- https://security.netapp.com/advisory/ntap-20210909-0001/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4978Third Party Advisory
FAQ
What is CVE-2021-38166?
CVE-2021-38166 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 impractic...
How severe is CVE-2021-38166?
CVE-2021-38166 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-38166?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Debian Debian Linux.