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CVE-2024-26591— bpf: Fix re-attachment branch in bpf_tracing_prog_attach

Quick assessment

Affected
Linux Linux
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，该漏洞源于缺少attach_btf而导致崩溃。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux f3a95075549e0e5c36db922caf86847db7a35403< a7b98aa10f895e2569403896f2d19b73b6c95653 affected
f3a95075549e0e5c36db922caf86847db7a35403< 6cc9c0af0aa06f781fa515a1734b1a4239dfd2c0 affected
f3a95075549e0e5c36db922caf86847db7a35403< 8c8bcd45e9b10eef12321f08d2e5be33d615509c affected
f3a95075549e0e5c36db922caf86847db7a35403< 50ae82f080cf87e84828f066c31723b781d68f5b affected
f3a95075549e0e5c36db922caf86847db7a35403< 715d82ba636cb3629a6e18a33bb9dbe53f9936ee affected
5.13 affected
< 5.13 unaffected
5.15.148≤ 5.15.* unaffected
… +4 more rows
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I. Basic Information for CVE-2024-26591

Vulnerability Information
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Vulnerability Title
bpf: Fix re-attachment branch in bpf_tracing_prog_attach
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix re-attachment branch in bpf_tracing_prog_attach The following case can cause a crash due to missing attach_btf: 1) load rawtp program 2) load fentry program with rawtp as target_fd 3) create tracing link for fentry program with target_fd = 0 4) repeat 3 In the end we have: - prog->aux->dst_trampoline == NULL - tgt_prog == NULL (because we did not provide target_fd to link_create) - prog->aux->attach_btf == NULL (the program was loaded with attach_prog_fd=X) - the program was loaded for tgt_prog but we have no way to find out which one BUG: kernel NULL pointer dereference, address: 0000000000000058 Call Trace: <TASK> ? __die+0x20/0x70 ? page_fault_oops+0x15b/0x430 ? fixup_exception+0x22/0x330 ? exc_page_fault+0x6f/0x170 ? asm_exc_page_fault+0x22/0x30 ? bpf_tracing_prog_attach+0x279/0x560 ? btf_obj_id+0x5/0x10 bpf_tracing_prog_attach+0x439/0x560 __sys_bpf+0x1cf4/0x2de0 __x64_sys_bpf+0x1c/0x30 do_syscall_64+0x41/0xf0 entry_SYSCALL_64_after_hwframe+0x6e/0x76 Return -EINVAL in this situation.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
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，该漏洞源于缺少attach_btf而导致崩溃。
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 Linux f3a95075549e0e5c36db922caf86847db7a35403 ~ a7b98aa10f895e2569403896f2d19b73b6c95653 -
Linux Linux 5.13 -

II. Public POCs for CVE-2024-26591

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III. Intelligence Information for CVE-2024-26591

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Other References for CVE-2024-26591 (5)

Same Patch Batch · Linux · 2024-02-22 · 17 CVEs total

CVE-2024-26592 9.8 CRITICAL ksmbd: fix UAF issue in ksmbd_tcp_new_connection()
CVE-2023-52447 7.8 HIGH bpf: Defer the free of inner map when necessary
CVE-2023-52444 7.8 HIGH f2fs: fix to avoid dirent corruption
CVE-2024-26589 7.8 HIGH bpf: Reject variable offset alu on PTR_TO_FLOW_KEYS
CVE-2024-26586 7.8 HIGH mlxsw: spectrum_acl_tcam: Fix stack corruption
CVE-2023-52452 bpf: Fix accesses to uninit stack slots
CVE-2023-52451 powerpc/pseries/memhp: Fix access beyond end of drmem array
CVE-2023-52450 perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()
CVE-2023-52449 mtd: Fix gluebi NULL pointer dereference caused by ftl notifier
CVE-2023-52448 gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
CVE-2023-52446 bpf: Fix a race condition between btf_put() and map_free()
CVE-2023-52445 media: pvrusb2: fix use after free on context disconnection
CVE-2024-26590 erofs: fix inconsistent per-file compression format
CVE-2024-26588 LoongArch: BPF: Prevent out-of-bounds memory access
CVE-2024-26587 net: netdevsim: don't try to destroy PHC on VFs
CVE-2023-52443 apparmor: avoid crash when parsed profile name is empty

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26591

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