vulnerability
Oracle Linux: CVE-2020-26541: ELSA-2020-5913: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:M/C:C/I:C/A:C) | 2020-09-15 | 2021-07-01 | 2025-01-23 |
Severity
6
CVSS
(AV:L/AC:L/Au:M/C:C/I:C/A:C)
Published
2020-09-15
Added
2021-07-01
Modified
2025-01-23
Description
The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.
A flaw was found in the Linux kernel in certs/blacklist.c, When signature entries for EFI_CERT_X509_GUID are contained in the Secure Boot Forbidden Signature Database, the entries are skipped. This can cause a security threat and breach system integrity, confidentiality and even lead to a denial of service problem.
A flaw was found in the Linux kernel in certs/blacklist.c, When signature entries for EFI_CERT_X509_GUID are contained in the Secure Boot Forbidden Signature Database, the entries are skipped. This can cause a security threat and breach system integrity, confidentiality and even lead to a denial of service problem.
Solution(s)
oracle-linux-upgrade-kerneloracle-linux-upgrade-kernel-uek
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