一、 漏洞 CVE-2025-21683 基础信息
漏洞标题
bpf: 修复bpf_sk_select_reuseport()内存泄漏漏洞
来源:AIGC 神龙大模型
漏洞描述信息
N/A
来源:AIGC 神龙大模型
CVSS信息
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
来源:AIGC 神龙大模型
漏洞类别
在移除最后引用时对内存的释放不恰当(内存泄露)
来源:AIGC 神龙大模型
漏洞标题
bpf: Fix bpf_sk_select_reuseport() memory leak
来源:美国国家漏洞数据库 NVD
漏洞描述信息
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix bpf_sk_select_reuseport() memory leak As pointed out in the original comment, lookup in sockmap can return a TCP ESTABLISHED socket. Such TCP socket may have had SO_ATTACH_REUSEPORT_EBPF set before it was ESTABLISHED. In other words, a non-NULL sk_reuseport_cb does not imply a non-refcounted socket. Drop sk's reference in both error paths. unreferenced object 0xffff888101911800 (size 2048): comm "test_progs", pid 44109, jiffies 4297131437 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 9336483b): __kmalloc_noprof+0x3bf/0x560 __reuseport_alloc+0x1d/0x40 reuseport_alloc+0xca/0x150 reuseport_attach_prog+0x87/0x140 sk_reuseport_attach_bpf+0xc8/0x100 sk_setsockopt+0x1181/0x1990 do_sock_setsockopt+0x12b/0x160 __sys_setsockopt+0x7b/0xc0 __x64_sys_setsockopt+0x1b/0x30 do_syscall_64+0x93/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e
来源:美国国家漏洞数据库 NVD
CVSS信息
N/A
来源:美国国家漏洞数据库 NVD
漏洞类别
N/A
来源:美国国家漏洞数据库 NVD
二、漏洞 CVE-2025-21683 的公开POC
# POC 描述 源链接 神龙链接
三、漏洞 CVE-2025-21683 的情报信息
  • 标题: bpf: Fix bpf_sk_select_reuseport() memory leak - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

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  • 标题: bpf: Fix bpf_sk_select_reuseport() memory leak - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签:

  • 标题: bpf: Fix bpf_sk_select_reuseport() memory leak - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签:

  • 标题: bpf: Fix bpf_sk_select_reuseport() memory leak - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签:

  • 标题: bpf: Fix bpf_sk_select_reuseport() memory leak - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签:

  • 标题: bpf: Fix bpf_sk_select_reuseport() memory leak - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

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  • https://nvd.nist.gov/vuln/detail/CVE-2025-21683