CVE-2022-1055 Use after Free in tc_new_tfilter allowing for privilege escalation in Linux Kernel

2022-03-2915:05:13

CWE-416

Google

www.cve.org

8.6 High

CVSS4

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/SC:H/VI:H/SI:H/VA:N/SA:N

7.9 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Kernel",
    "vendor": "Linux",
    "versions": [
      {
        "lessThan": "v5.17-rc3",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5",
        "versionType": "git"
      }
    ]
  }
]