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CVE-2022-1055

Use after Free in tc_new_tfilter allowing for privilege escalation in Linux Kernel

High8.6EPSS 0.50%
Published
Updated
Reserved
Assigned by
Google

Description

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

Scores

CVSS scores of CVE-2022-1055, by who scored it
Scored byCVSSScoreVector
GoogleCNA (assigner)4.0High8.6CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
NVDNVD · Analyzed4.0High8.6CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.50% · top 57% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: poc · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.

Weakness

Affected products

  • Linux · Kernel

    • affected 5.1.0 – < 5.4.177
    • affected 5.5.0 – < 5.10.97
    • affected 5.11.0 – < 5.15.20
    • affected 5.16.0 – < 5.16.6
    • unaffected 5.17.0
    • unaffected 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

References (5)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .