CVE-2021-45486
LOW
3.5
CVSS Score
Published: December 25, 2021 at 01:04 AM UTC
Updated: June 17, 2026 at 04:13 AM UTC
4 products affected across 2 vendorsLinux KernelCommunications Cloud Native Core PolicyCommunications Cloud Native Core Binding Support Function
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Severity
LOW3.5
Exploit prediction
EPSS 0.4%
Description
In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash table is very small.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 5.12.4
Affected range stops below 5.12.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
x_refsource_MISCTechnical DescriptionThird Party Advisory
Source: [email protected]
https://arxiv.org/pdf/2112.09604.pdfx_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/ipv4/route.c?id=aa6dd211e4b1dde9d5dc25d699d35f789ae7eebax_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujul2022.htmlCVSS
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-327
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