CVE-2022-32296

LOW
Published Jun 5, 20224y ago · Modified Jun 17, 20262w ago
3.3 CVSS 3.1
Low
Find Similar
Published Jun 5, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.

CVSS Details

Base Score
3.3
Exploitability
1.8
Impact
1.4
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-330

Affected Products 1

VendorProductVersionRange
linuxlinux_kernel* <5.17.9

References 6

  • arxiv.org https://arxiv.org/abs/2209.12993
  • cdn.kernel.org https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9
    Release NotesVendor Advisory
  • git.kernel.org https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
    Mailing ListPatchVendor Advisory
  • github.com https://github.com/0xkol/rfc6056-device-tracker
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
  • debian.org https://www.debian.org/security/2022/dsa-5173

Remediation

  • git.kernel.org https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
    Mailing ListPatchVendor Advisory