CVE-2021-35039
High
CVE-2021-35039
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.
Exploit probability
0.2%
Published
July 7, 2021
Required by
Not available
Last source change
April 16, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2021-35039
View original source
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.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2021/07/06/3
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75
- https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://security.netapp.com/advisory/ntap-20210813-0004/
- https://www.openwall.com/lists/oss-security/2021/07/06/3