CVE-2021-45485
HIGH
7.5
CVSS Score
Published: December 25, 2021 at 01:05 AM UTC
Updated: August 5, 2026 at 06:54 PM UTC
44 products affected across 3 vendorsLinux KernelH700S FirmwareH410S Firmware
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Severity
HIGH7.5
Exploit prediction
EPSS 4%
Description
In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 4.4.2764.10 ≤ v < 4.14.2404.15 ≤ v < 4.19.1984.20 ≤ v < 5.4.1334.5 ≤ v < 4.9.2765.11 ≤ v < 5.12.185.13 ≤ v < 5.13.35.5 ≤ v < 5.10.51
Affected range stops below 4.14.240, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.198, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.276, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.276, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.51, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.12.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.13.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.133, so it looks safe — our inference, not a vendor statement
All versions
netapp-all-flash-fabric-attached-storage-8300 (same device)
All versions
netapp-all-flash-fabric-attached-storage-8700 (same device)
All versions
All versions
All versions
netapp-fabric-attached-storage-8300 (same device)
All versions
netapp-fabric-attached-storage-8700 (same device)
All versions
netapp-fabric-attached-storage-a400 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
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-5.13.3x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220121-0001/x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujul2022.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-327
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