CVE-2024-46782— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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，该漏洞源于内存释放后重用。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 7f00feaf107645d95a6d87e99b4d141ac0a08efd< 43d34110882b97ba1ec66cc8234b18983efb9abf |
affected |
7f00feaf107645d95a6d87e99b4d141ac0a08efd< dcaf4e2216824839d26727a15b638c6a677bd9fc |
affected | ||
7f00feaf107645d95a6d87e99b4d141ac0a08efd< 93ee345ba349922834e6a9d1dadabaedcc12dce6 |
affected | ||
7f00feaf107645d95a6d87e99b4d141ac0a08efd< bda4d84ac0d5421b346faee720011f58bdb99673 |
affected | ||
7f00feaf107645d95a6d87e99b4d141ac0a08efd< 925c18a7cff93d8a4320d652351294ff7d0ac93c |
affected | ||
7f00feaf107645d95a6d87e99b4d141ac0a08efd< 18a5a16940464b301ea91bf5da3a324aedb347b2 |
affected | ||
7f00feaf107645d95a6d87e99b4d141ac0a08efd< 47abd8adddbc0aecb8f231269ef659148d5dabe4 |
affected | ||
7f00feaf107645d95a6d87e99b4d141ac0a08efd< 031ae72825cef43e4650140b800ad58bf7a6a466 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2024-46782 基础信息
漏洞信息
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Vulnerability Title
ila: call nf_unregister_net_hooks() sooner
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ila: call nf_unregister_net_hooks() sooner
syzbot found an use-after-free Read in ila_nf_input [1]
Issue here is that ila_xlat_exit_net() frees the rhashtable,
then call nf_unregister_net_hooks().
It should be done in the reverse way, with a synchronize_rcu().
This is a good match for a pre_exit() method.
[1]
BUG: KASAN: use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]
BUG: KASAN: use-after-free in __rhashtable_lookup include/linux/rhashtable.h:604 [inline]
BUG: KASAN: use-after-free in rhashtable_lookup include/linux/rhashtable.h:646 [inline]
BUG: KASAN: use-after-free in rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672
Read of size 4 at addr ffff888064620008 by task ksoftirqd/0/16
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc4-syzkaller-00238-g2ad6d23f465a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
rht_key_hashfn include/linux/rhashtable.h:159 [inline]
__rhashtable_lookup include/linux/rhashtable.h:604 [inline]
rhashtable_lookup include/linux/rhashtable.h:646 [inline]
rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672
ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:132 [inline]
ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline]
ila_nf_input+0x1fe/0x3c0 net/ipv6/ila/ila_xlat.c:190
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5661 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5775
process_backlog+0x662/0x15b0 net/core/dev.c:6108
__napi_poll+0xcb/0x490 net/core/dev.c:6772
napi_poll net/core/dev.c:6841 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6963
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:928
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64620
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xbfffffff(buddy)
raw: 00fff00000000000 ffffea0000959608 ffffea00019d9408 0000000000000000
raw: 0000000000000000 0000000000000003 00000000bfffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 5242, tgid 5242 (syz-executor), ts 73611328570, free_ts 618981657187
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4103
__kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4130
__do_kmalloc_node mm/slub.c:4146 [inline]
__kmalloc_node_noprof+0x2d2/0x440 mm/slub.c:4164
__kvmalloc_node_noprof+0x72/0x190 mm/util.c:650
bucket_table_alloc lib/rhashtable.c:186 [inline]
rhashtable_init_noprof+0x534/0xa60 lib/rhashtable.c:1071
ila_xlat_init_net+0xa0/0x110 net/ipv6/ila/ila_xlat.c:613
ops_ini
---truncated---
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，该漏洞源于内存释放后重用。
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-2024-46782 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-46782 补丁与修复 (6)
同批安全公告 · Linux · 2024-09-18 · 共 85 条
| CVE-2024-46717 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-46736 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-46796 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-46755 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46750 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46725 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46787 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46734 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46738 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46740 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46781 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46746 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46780 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46741 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46751 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46777 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46754 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46762 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46765 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-46771 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 85 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-46782
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