CVE-2023-53768— 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，该漏洞源于配置缓冲区分配不当，可能导致越界访问。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | faa87ce9196dbb074d75bd4aecb8bacf18f19b4e< b1a726ad33e585e3d9fa70712df31ae105e4532c |
affected |
faa87ce9196dbb074d75bd4aecb8bacf18f19b4e< 6e7b2337ecd028bd888a1a0be4115b8a88faf838 |
affected | ||
faa87ce9196dbb074d75bd4aecb8bacf18f19b4e< 963b54df82b6d6206d7def273390bf3f7af558e1 |
affected | ||
6.0 |
affected | ||
< 6.0 |
unaffected | ||
6.1.40≤ 6.1.* |
unaffected | ||
6.4.5≤ 6.4.* |
unaffected | ||
6.5≤ * |
unaffected |
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一、 漏洞 CVE-2023-53768 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！
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Vulnerability Title
regmap-irq: Fix out-of-bounds access when allocating config buffers
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
regmap-irq: Fix out-of-bounds access when allocating config buffers
When allocating the 2D array for handling IRQ type registers in
regmap_add_irq_chip_fwnode(), the intent is to allocate a matrix
with num_config_bases rows and num_config_regs columns.
This is currently handled by allocating a buffer to hold a pointer for
each row (i.e. num_config_bases). After that, the logic attempts to
allocate the memory required to hold the register configuration for
each row. However, instead of doing this allocation for each row
(i.e. num_config_bases allocations), the logic erroneously does this
allocation num_config_regs number of times.
This scenario can lead to out-of-bounds accesses when num_config_regs
is greater than num_config_bases. Fix this by updating the terminating
condition of the loop that allocates the memory for holding the register
configuration to allocate memory only for each row in the matrix.
Amit Pundir reported a crash that was occurring on his db845c device
due to memory corruption (see "Closes" tag for Amit's report). The KASAN
report below helped narrow it down to this issue:
[ 14.033877][ T1] ==================================================================
[ 14.042507][ T1] BUG: KASAN: invalid-access in regmap_add_irq_chip_fwnode+0x594/0x1364
[ 14.050796][ T1] Write of size 8 at addr 06ffff8081021850 by task init/1
[ 14.242004][ T1] The buggy address belongs to the object at ffffff8081021850
[ 14.242004][ T1] which belongs to the cache kmalloc-8 of size 8
[ 14.255669][ T1] The buggy address is located 0 bytes inside of
[ 14.255669][ T1] 8-byte region [ffffff8081021850, ffffff8081021858)
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，该漏洞源于配置缓冲区分配不当，可能导致越界访问。
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-2023-53768 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-2025-40318 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53764 | 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-2025-40303 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50623 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50630 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53747 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40317 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40290 | 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 |
| CVE-2025-40291 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53759 | 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-2023-53768
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