CVE-2023-53742— 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kcsan在read_instrumented_memory中使用READ_ONCE，可能导致对齐错误。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | dfd402a4c4baae42398ce9180ff424d589b8bffc< 706ae665747b629bcf87a2d7e6438602f904b8d5 |
affected |
dfd402a4c4baae42398ce9180ff424d589b8bffc< 75c03a8cfc731519236f08c34c7e029ae153a613 |
affected | ||
dfd402a4c4baae42398ce9180ff424d589b8bffc< f8f2297355513e5e0631e604ef9d7e449c7dcd00 |
affected | ||
dfd402a4c4baae42398ce9180ff424d589b8bffc< 8dec88070d964bfeb4198f34cb5956d89dd1f557 |
affected | ||
5.8 |
affected | ||
< 5.8 |
unaffected | ||
6.1.28≤ 6.1.* |
unaffected | ||
6.2.15≤ 6.2.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2023-53742 基础信息
漏洞信息
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Vulnerability Title
kcsan: Avoid READ_ONCE() in read_instrumented_memory()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
kcsan: Avoid READ_ONCE() in read_instrumented_memory()
Haibo Li reported:
| Unable to handle kernel paging request at virtual address
| ffffff802a0d8d7171
| Mem abort info:o:
| ESR = 0x9600002121
| EC = 0x25: DABT (current EL), IL = 32 bitsts
| SET = 0, FnV = 0 0
| EA = 0, S1PTW = 0 0
| FSC = 0x21: alignment fault
| Data abort info:o:
| ISV = 0, ISS = 0x0000002121
| CM = 0, WnR = 0 0
| swapper pgtable: 4k pages, 39-bit VAs, pgdp=000000002835200000
| [ffffff802a0d8d71] pgd=180000005fbf9003, p4d=180000005fbf9003,
| pud=180000005fbf9003, pmd=180000005fbe8003, pte=006800002a0d8707
| Internal error: Oops: 96000021 [#1] PREEMPT SMP
| Modules linked in:
| CPU: 2 PID: 45 Comm: kworker/u8:2 Not tainted
| 5.15.78-android13-8-g63561175bbda-dirty #1
| ...
| pc : kcsan_setup_watchpoint+0x26c/0x6bc
| lr : kcsan_setup_watchpoint+0x88/0x6bc
| sp : ffffffc00ab4b7f0
| x29: ffffffc00ab4b800 x28: ffffff80294fe588 x27: 0000000000000001
| x26: 0000000000000019 x25: 0000000000000001 x24: ffffff80294fdb80
| x23: 0000000000000000 x22: ffffffc00a70fb68 x21: ffffff802a0d8d71
| x20: 0000000000000002 x19: 0000000000000000 x18: ffffffc00a9bd060
| x17: 0000000000000001 x16: 0000000000000000 x15: ffffffc00a59f000
| x14: 0000000000000001 x13: 0000000000000000 x12: ffffffc00a70faa0
| x11: 00000000aaaaaaab x10: 0000000000000054 x9 : ffffffc00839adf8
| x8 : ffffffc009b4cf00 x7 : 0000000000000000 x6 : 0000000000000007
| x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffffffc00a70fb70
| x2 : 0005ff802a0d8d71 x1 : 0000000000000000 x0 : 0000000000000000
| Call trace:
| kcsan_setup_watchpoint+0x26c/0x6bc
| __tsan_read2+0x1f0/0x234
| inflate_fast+0x498/0x750
| zlib_inflate+0x1304/0x2384
| __gunzip+0x3a0/0x45c
| gunzip+0x20/0x30
| unpack_to_rootfs+0x2a8/0x3fc
| do_populate_rootfs+0xe8/0x11c
| async_run_entry_fn+0x58/0x1bc
| process_one_work+0x3ec/0x738
| worker_thread+0x4c4/0x838
| kthread+0x20c/0x258
| ret_from_fork+0x10/0x20
| Code: b8bfc2a8 2a0803f7 14000007 d503249f (78bfc2a8) )
| ---[ end trace 613a943cb0a572b6 ]-----
The reason for this is that on certain arm64 configuration since
e35123d83ee3 ("arm64: lto: Strengthen READ_ONCE() to acquire when
CONFIG_LTO=y"), READ_ONCE() may be promoted to a full atomic acquire
instruction which cannot be used on unaligned addresses.
Fix it by avoiding READ_ONCE() in read_instrumented_memory(), and simply
forcing the compiler to do the required access by casting to the
appropriate volatile type. In terms of generated code this currently
only affects architectures that do not use the default READ_ONCE()
implementation.
The only downside is that we are not guaranteed atomicity of the access
itself, although on most architectures a plain load up to machine word
size should still be atomic (a fact the default READ_ONCE() still relies
on itself).
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kcsan在read_instrumented_memory中使用READ_ONCE，可能导致对齐错误。
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-2023-53742 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 · 2025-12-08 · 共 82 条
| CVE-2023-53751 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40320 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-53769 | 9.3 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-53764 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40318 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53762 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40292 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40309 | 8.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40317 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53768 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40297 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40307 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50623 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53759 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53747 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53763 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40319 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40323 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53753 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53752 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 82 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2023-53742
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