CVE-2026-31546— Linux kernel 安全漏洞
影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< 19f0fd87df0e5746b24f5caa465a66a8c6e6e241 | affected |
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< edacf1613f7b26423ebfa8b2892e7453c4235354 | affected | ||
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< 2ec2c777f357a83c3d503d8d9370c90b60f0ae63 | affected | ||
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< 0a3f8cd3f370247ded14d38d216b49dd30eade76 | affected | ||
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< 6a3bb74e25d79cbb15f67ef80f71e2b2bfe27ff4 | affected | ||
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< 017d674cf6930e9586a29ee808c7ca09d1396d07 | affected | ||
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< ec9762f0df2f9fbe3f40a3bfa8aab8b2f721466c | affected | ||
caafa84251b886feb6cdf23d50e2cc99dcdaaaf3< 605b52497bf89b3b154674deb135da98f916e390 | affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-31546 基础信息
漏洞信息
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Vulnerability Title
net: bonding: fix NULL deref in bond_debug_rlb_hash_show
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: bonding: fix NULL deref in bond_debug_rlb_hash_show rlb_clear_slave intentionally keeps RLB hash-table entries on the rx_hashtbl_used_head list with slave set to NULL when no replacement slave is available. However, bond_debug_rlb_hash_show visites client_info->slave without checking if it's NULL. Other used-list iterators in bond_alb.c already handle this NULL-slave state safely: - rlb_update_client returns early on !client_info->slave - rlb_req_update_slave_clients, rlb_clear_slave, and rlb_rebalance compare slave values before visiting - lb_req_update_subnet_clients continues if slave is NULL The following NULL deref crash can be trigger in bond_debug_rlb_hash_show: [ 1.289791] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 1.292058] RIP: 0010:bond_debug_rlb_hash_show (drivers/net/bonding/bond_debugfs.c:41) [ 1.293101] RSP: 0018:ffffc900004a7d00 EFLAGS: 00010286 [ 1.293333] RAX: 0000000000000000 RBX: ffff888102b48200 RCX: ffff888102b48204 [ 1.293631] RDX: ffff888102b48200 RSI: ffffffff839daad5 RDI: ffff888102815078 [ 1.293924] RBP: ffff888102815078 R08: ffff888102b4820e R09: 0000000000000000 [ 1.294267] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888100f929c0 [ 1.294564] R13: ffff888100f92a00 R14: 0000000000000001 R15: ffffc900004a7ed8 [ 1.294864] FS: 0000000001395380(0000) GS:ffff888196e75000(0000) knlGS:0000000000000000 [ 1.295239] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.295480] CR2: 0000000000000000 CR3: 0000000102adc004 CR4: 0000000000772ef0 [ 1.295897] Call Trace: [ 1.296134] seq_read_iter (fs/seq_file.c:231) [ 1.296341] seq_read (fs/seq_file.c:164) [ 1.296493] full_proxy_read (fs/debugfs/file.c:378 (discriminator 1)) [ 1.296658] vfs_read (fs/read_write.c:572) [ 1.296981] ksys_read (fs/read_write.c:717) [ 1.297132] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1)) [ 1.297325] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Add a NULL check and print "(none)" for entries with no assigned slave.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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bond_debug_rlb_hash_show函数未检查slave指针是否为空，可能导致空指针取消引用。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-31546 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2026-04-24 · 共 138 条
| CVE-2026-31609 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31657 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31633 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31608 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31669 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31668 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31536 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31659 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31649 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31607 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31637 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31589 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31636 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-31570 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31558 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31588 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31553 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31629 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31622 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-31611 | 8.6 HIGH | Linux kernel 安全漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-31546
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