CVE-2023-53668— 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，该漏洞源于环形缓冲区处理不当，可能导致读取trace_pipe时出现软锁定。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | a5fb833172eca69136e9ee1ada778e404086ab8a< 0a29dae5786d263016a9aceb1e56bf3fd4cc6fa0 |
affected |
a5fb833172eca69136e9ee1ada778e404086ab8a< a55e8a3596048c2f7b574049aeb1885b5abba1cc |
affected | ||
a5fb833172eca69136e9ee1ada778e404086ab8a< e84829522fc72bb43556b31575731de0440ac0dd |
affected | ||
a5fb833172eca69136e9ee1ada778e404086ab8a< 5e68f1f3a20fe9b6bde018e353269fbfa289609c |
affected | ||
a5fb833172eca69136e9ee1ada778e404086ab8a< bb14a93bccc92766b1d9302c6bcbea17d4bce306 |
affected | ||
a5fb833172eca69136e9ee1ada778e404086ab8a< 8b0b63fdac6b70a45614e7d4b30e5bbb93deb007 |
affected | ||
a5fb833172eca69136e9ee1ada778e404086ab8a< 27bdd93e44cc28dd9b94893fae146b83d4f5b31e |
affected | ||
a5fb833172eca69136e9ee1ada778e404086ab8a< 7e42907f3a7b4ce3a2d1757f6d78336984daf8f5 |
affected | ||
| … +10 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2023-53668 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
ring-buffer: Fix deadloop issue on reading trace_pipe
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Fix deadloop issue on reading trace_pipe
Soft lockup occurs when reading file 'trace_pipe':
watchdog: BUG: soft lockup - CPU#6 stuck for 22s! [cat:4488]
[...]
RIP: 0010:ring_buffer_empty_cpu+0xed/0x170
RSP: 0018:ffff88810dd6fc48 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000246 RCX: ffffffff93d1aaeb
RDX: ffff88810a280040 RSI: 0000000000000008 RDI: ffff88811164b218
RBP: ffff88811164b218 R08: 0000000000000000 R09: ffff88815156600f
R10: ffffed102a2acc01 R11: 0000000000000001 R12: 0000000051651901
R13: 0000000000000000 R14: ffff888115e49500 R15: 0000000000000000
[...]
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d853c2000 CR3: 000000010dcd8000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__find_next_entry+0x1a8/0x4b0
? peek_next_entry+0x250/0x250
? down_write+0xa5/0x120
? down_write_killable+0x130/0x130
trace_find_next_entry_inc+0x3b/0x1d0
tracing_read_pipe+0x423/0xae0
? tracing_splice_read_pipe+0xcb0/0xcb0
vfs_read+0x16b/0x490
ksys_read+0x105/0x210
? __ia32_sys_pwrite64+0x200/0x200
? switch_fpu_return+0x108/0x220
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x61/0xc6
Through the vmcore, I found it's because in tracing_read_pipe(),
ring_buffer_empty_cpu() found some buffer is not empty but then it
cannot read anything due to "rb_num_of_entries() == 0" always true,
Then it infinitely loop the procedure due to user buffer not been
filled, see following code path:
tracing_read_pipe() {
... ...
waitagain:
tracing_wait_pipe() // 1. find non-empty buffer here
trace_find_next_entry_inc() // 2. loop here try to find an entry
__find_next_entry()
ring_buffer_empty_cpu(); // 3. find non-empty buffer
peek_next_entry() // 4. but peek always return NULL
ring_buffer_peek()
rb_buffer_peek()
rb_get_reader_page()
// 5. because rb_num_of_entries() == 0 always true here
// then return NULL
// 6. user buffer not been filled so goto 'waitgain'
// and eventually leads to an deadloop in kernel!!!
}
By some analyzing, I found that when resetting ringbuffer, the 'entries'
of its pages are not all cleared (see rb_reset_cpu()). Then when reducing
the ringbuffer, and if some reduced pages exist dirty 'entries' data, they
will be added into 'cpu_buffer->overrun' (see rb_remove_pages()), which
cause wrong 'overrun' count and eventually cause the deadloop issue.
To fix it, we need to clear every pages in rb_reset_cpu().
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，该漏洞源于环形缓冲区处理不当，可能导致读取trace_pipe时出现软锁定。
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-2023-53668 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2023-53668 的情报信息
请登录查看更多情报信息。
CVE-2023-53668 补丁与修复 (2)
同批安全公告 · Linux · 2025-10-07 · 共 118 条
| CVE-2023-53629 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-53673 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53675 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53676 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53630 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53679 | 8.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53635 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50528 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53659 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53660 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53619 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53643 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53645 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53646 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53669 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53626 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53627 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50517 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50518 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50543 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 118 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2023-53668
暂无评论