Security readout for executives and security teams
CVE-2013-7421 is a Linux kernel Crypto API flaw where a local user could trigger loading of arbitrary kernel modules. It is not described as remotely exploitable in the supplied sources, but it matters on shared, multi-user, hosting, and container-heavy Linux systems because local access can affect kernel trust boundaries. Exposure is most likely on older Linux systems, or vendor kernels lacking the relevant backport, especially where untrusted users have shell, workload, or container access. The bundle lists Linux before 3.18.5 and vendor advisories from Red Hat, Ubuntu, Debian, Oracle, and Mandriva. Prioritize remediation where older Linux kernels support shared access or untrusted workloads. Business urgency is lower than a remote internet-facing flaw, but kernel boundary failures can materially increase impact after any local foothold. Mitigation focus: Update affected Linux kernels using supported vendor security packages.; Confirm the kernel includes the upstream fix or vendor backport.; Prioritize shared hosts, build runners, and systems with untrusted local users..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2013-7421 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWuCVE reference · x_refsource_MISC
- [linux-kernel] 20130304 Re: user ns: arbitrary module loadingCVE reference · mailing-list, x_refsource_MLIST
- https://bugzilla.redhat.com/show_bug.cgi?id=1185469CVE reference · x_refsource_CONFIRM
- https://github.com/torvalds/linux/commit/5d26a105b5a73e5635eae0629b42fa0a90e07b7bCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.