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

Quick assessment

Affected
Linux Kernel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于组件libbpf的tools/lib/bpf/btf_dump.c文件中的函数btf_dump_name_dups受到影响，可能会导致释放后重用。

CVSS 5.5 · Medium EPSS 0.91% · P58

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 110

VendorProduct Version RangeStatus
Linux Kernel 5.10.162 affected
5.15.0 affected
5.15.1 affected
5.15.2 affected
5.15.3 affected
5.15.4 affected
5.15.5 affected
5.15.6 affected
… +102 more rows
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I. Basic Information for CVE-2022-3534

Vulnerability Information
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Vulnerability Title
Linux Kernel libbpf btf_dump.c btf_dump_name_dups use after free
Source: CVE Program / CVE List V5
Vulnerability Description
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 btf_dump_name_dups of the file tools/lib/bpf/btf_dump.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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于组件libbpf的tools/lib/bpf/btf_dump.c文件中的函数btf_dump_name_dups受到影响，可能会导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Kernel 5.10.162 cpe:2.3:o:linux:kernel:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2022-3534

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III. Intelligence Information for CVE-2022-3534

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Patches & Fixes for CVE-2022-3534 (1)

Vendor Advisories for CVE-2022-3534 (1)

Same Patch Batch · Linux · 2022-10-17 · 11 CVEs total

CVE-2022-3541 5.5 MEDIUM Linux Kernel BPF spl2sw_driver.c spl2sw_nvmem_get_mac_address use after free
CVE-2022-3545 5.5 MEDIUM Linux Kernel IPsec nfp_cppcore.c area_cache_get use after free
CVE-2022-3564 5.5 MEDIUM Linux Kernel Bluetooth l2cap_core.c l2cap_reassemble_sdu use after free
CVE-2022-3565 4.6 MEDIUM Linux Kernel Bluetooth l1oip_core.c del_timer use after free
CVE-2022-3566 4.6 MEDIUM Linux Kernel TCP tcp_setsockopt race condition
CVE-2022-3567 4.6 MEDIUM Linux Kernel IPv6 inet6_dgram_ops race condition
CVE-2022-3533 3.5 LOW Linux Kernel BPF usdt.c parse_usdt_arg memory leak
CVE-2022-3543 3.5 LOW Linux Kernel BPF af_unix.c unix_release_sock memory leak
CVE-2022-3544 3.5 LOW Linux Kernel Netfilter sysfs.c damon_sysfs_add_target memory leak
CVE-2022-3563 3.5 LOW Linux Kernel BlueZ mgmt-tester.c read_50_controller_cap_complete null pointer dereference

IV. Related Vulnerabilities

Same product: Kernel
Same vendor: Linux
Same weakness: CWE-416

V. Comments for CVE-2022-3534

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