CVE-2021-35039

Description

kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.openwall.com/lists/oss-security/2021/07/06/3 third party advisory mailing list
https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75 third party advisory patch
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14 mailing list patch vendor advisory
http://www.openwall.com/lists/oss-security/2021/07/06/3 third party advisory mailing list
https://security.netapp.com/advisory/ntap-20210813-0004/ third party advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html third party advisory mailing list
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75 mailing list patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-35039?
CVE-2021-35039 has been scored as a high severity vulnerability.
How to fix CVE-2021-35039?
To fix CVE-2021-35039, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-35039 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-35039 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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