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Vulnerability Intelligence

Vulnerability IntelligenceCVE-2021-45486

CVE-2021-45486

LOW3.5

In the IPv4 implementation in the Linux kernel before 5

Published Dec 25, 2021

Modified 1 years ago

Details

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.

References

https://arxiv.org/pdf/2112.09604.pdf

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/ipv4/route.c?id=aa6dd211e4b1dde9d5dc25d699d35f789ae7eeba

https://www.cve.org/CVERecord?id=CVE-2021-45486

https://www.oracle.com/security-alerts/cpujul2022.html

CVSS Analysis

CVSS v3.1

3.5

Exploitability

Attack Vector

AdjacentAV:A

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

LowC:L

Integrity

NoneI:N

Availability

NoneA:N

3.5/CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Ecosystems

Timeline

PublishedDec 25, 2021

ModifiedAug 4, 2024

CVE-2021-45486 | Mondoo Vulnerability Intelligence