Security readout for executives and security teams
CVE-2017-2634 is a Linux kernel flaw in DCCP networking that can let a remote attacker crash an affected system. The reported impact is availability loss, not data theft or privilege escalation. Business urgency is highest for legacy Linux systems that still expose or depend on DCCP networking. Exposure is most plausible on old Linux kernels with DCCP enabled and reachable over the network, especially where IPv6 DCCP is present. Modern patched kernels are less likely exposed. The provided affected-version detail is limited, so validate against vendor backports rather than raw upstream version strings alone. Patch or otherwise de-risk affected legacy Linux systems in the next maintenance window, sooner for exposed or business-critical hosts. This is a high availability risk, but the provided evidence does not support emergency treatment for data compromise or active exploitation. Mitigation focus: Apply the relevant vendor kernel updates, including applicable Red Hat advisories.; Upgrade to a kernel containing the upstream fix or vendor backport.; Check vendor guidance for supported temporary exposure reduction..
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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CWE-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2017-2634 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51CVE reference · x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634CVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.