CVE-2024-44987— 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ipv6组件存在释放后重用漏洞。
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 | 0625491493d9000e4556bf566d205c28c8e7dc4e< 571567e0277008459750f0728f246086b2659429 |
affected |
0625491493d9000e4556bf566d205c28c8e7dc4e< ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8 |
affected | ||
0625491493d9000e4556bf566d205c28c8e7dc4e< cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e |
affected | ||
0625491493d9000e4556bf566d205c28c8e7dc4e< 24e93695b1239fbe4c31e224372be77f82dab69a |
affected | ||
0625491493d9000e4556bf566d205c28c8e7dc4e< 9a3e55afa95ed4ac9eda112d4f918af645d72f25 |
affected | ||
0625491493d9000e4556bf566d205c28c8e7dc4e< af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011 |
affected | ||
0625491493d9000e4556bf566d205c28c8e7dc4e< e44bd76dd072756e674f45c5be00153f4ded68b2 |
affected | ||
0625491493d9000e4556bf566d205c28c8e7dc4e< faa389b2fbaaec7fd27a390b4896139f9da662e3 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2024-44987 基础信息
漏洞信息
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Vulnerability Title
ipv6: prevent UAF in ip6_send_skb()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ipv6: prevent UAF in ip6_send_skb()
syzbot reported an UAF in ip6_send_skb() [1]
After ip6_local_out() has returned, we no longer can safely
dereference rt, unless we hold rcu_read_lock().
A similar issue has been fixed in commit
a688caa34beb ("ipv6: take rcu lock in rawv6_send_hdrinc()")
Another potential issue in ip6_finish_output2() is handled in a
separate patch.
[1]
BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964
Read of size 8 at addr ffff88806dde4858 by task syz.1.380/6530
CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #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
ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964
rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588
rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
do_iter_readv_writev+0x60a/0x890
vfs_writev+0x37c/0xbb0 fs/read_write.c:971
do_writev+0x1b1/0x350 fs/read_write.c:1018
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f936bf79e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8
</TASK>
Allocated by task 6530:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
dst_alloc+0x12b/0x190 net/core/dst.c:89
ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670
make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]
xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313
ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257
rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 45:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
dst_destroy+0x2ac/0x460 net/core/dst.c:124
rcu_do_batch kernel/rcu/tree.c:2569 [inline]
rcu_core+0xafd/0x1830 kernel/rcu/tree.
---truncated---
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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ipv6组件存在释放后重用漏洞。
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-2024-44987 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-44987 补丁与修复 (6)
同批安全公告 · Linux · 2024-09-04 · 共 58 条
| CVE-2024-44984 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44998 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44985 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44970 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44994 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44988 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44986 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44973 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-45000 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44959 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44951 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44954 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44966 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44967 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44974 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44978 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44995 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44997 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44949 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44992 | 7.5 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 58 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-44987
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