CVE-2022-3534: Linux Kernel libbpf btf_dump.c btf_dump_name_dups use after free

Published Oct 17, 2022
·
Updated

A vulnerability classified as critical has been found in Linux Kernel. Affected is the function btfdumpnamedups of the file tools/lib/bpf/btfdump.c of the component libbpf. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211032.

Other sources

A vulnerability has been found in Linux Kernel up to 5.10.162/5.15.85/6.0.15/6.1.1. The impacted element is the function btfdumpnamedups of the file tools/lib/bpf/btfdump.c of the component libbpf. The manipulation leads to use after free. Upgrading to version 5.10.163, 5.15.86, 6.0.16, 6.1.2 and 6.2 is sufficient to resolve this issue. The identifier of the patch is c61650b869e0b6fb0c0a28ed42d928eea969afc8/fbe08093fb2334549859829ef81d42570812597d/8c64a8e76eb85d422af5ec60ccbf26e3ead8c333/a733bf10198eb5bb927890940de8ab457491ed3b/93c660ca40b5d2f7c1b1626e955a8e9fa30e0749. You should upgrade the affected component.

— Ubuntu

Affected Software

15 affected componentsFixes available
Linux Linux kernel
Debian Debian Linux=11.0
Linux Linux kernel>=5.10<5.10.163
Linux Linux kernel>=5.11<5.15.86
Linux Linux kernel>=5.16<6.0.16
Linux Linux kernel>=6.1<6.1.2
ubuntu/dwarves-dfsg*
ubuntu/dwarves-dfsg<1.21-0ubuntu1~18.04.1+esm1
1.21-0ubuntu1~18.04.1+esm1
ubuntu/dwarves-dfsg<1.21-0ubuntu1~20.04.1
1.21-0ubuntu1~20.04.1
ubuntu/libbpf<0.5.0-1~ubuntu20.04.1+esm1
0.5.0-1~ubuntu20.04.1+esm1
ubuntu/libbpf<0.5.0-1ubuntu22.04.1
0.5.0-1ubuntu22.04.1
debian/libbpf
1.1.2-0+deb12u11.5.0-31.7.0-1
debian/libbpf<1.1.0-1
1.1.0-1
debian/libbpf<1.1.0-1
1.1.0-1
debian/libbpf<1.1.0-1
1.1.0-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/dwarves-dfsg to a version that resolves this vulnerability.

    Fixed in 1.21-0ubuntu1~18.04.1+esm1
  2. Upgrade

    Upgrade ubuntu/dwarves-dfsg to a version that resolves this vulnerability.

    Fixed in 1.21-0ubuntu1~20.04.1
  3. Upgrade

    Upgrade ubuntu/libbpf to a version that resolves this vulnerability.

    Fixed in 0.5.0-1~ubuntu20.04.1+esm1
  4. Upgrade

    Upgrade ubuntu/libbpf to a version that resolves this vulnerability.

    Fixed in 0.5.0-1ubuntu22.04.1
  5. Upgrade

    Upgrade debian/libbpf to a version that resolves this vulnerability.

    Fixed in 1.1.2-0+deb12u1Fixed in 1.5.0-3Fixed in 1.7.0-1
  6. Upgrade

    Upgrade debian/libbpf to a version that resolves this vulnerability.

    Fixed in 1.1.0-1

Event History

Oct 17, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionSeverityWeakness
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via OSV·09:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:15 AM
RemedyDescriptionSeverityWeaknessAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2022-3534?

CVE-2022-3534 has been classified as a critical vulnerability.

2

How do I fix CVE-2022-3534?

To address CVE-2022-3534, it is recommended to apply the latest patches provided for the Linux Kernel.

3

What is the risk associated with CVE-2022-3534?

The risk associated with CVE-2022-3534 involves potential use after free vulnerabilities which can lead to security breaches.

4

Which component is affected by CVE-2022-3534?

CVE-2022-3534 affects the libbpf component in the Linux Kernel.

5

What function is vulnerable in CVE-2022-3534?

The function btf_dump_name_dups in tools/lib/bpf/btf_dump.c is vulnerable in CVE-2022-3534.

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