CVE-2025-39967 (CNNVD-202510-2242)
中文标题:
Linux kernel 安全漏洞
英文标题:
fbcon: fix integer overflow in fbcon_do_set_font
漏洞描述
中文描述:
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,该漏洞源于字体大小计算中整数溢出,可能导致缓冲区溢出。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: fbcon: fix integer overflow in fbcon_do_set_font Fix integer overflow vulnerabilities in fbcon_do_set_font() where font size calculations could overflow when handling user-controlled font parameters. The vulnerabilities occur when: 1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount multiplication with user-controlled values that can overflow. 2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow 3. This results in smaller allocations than expected, leading to buffer overflows during font data copying. Add explicit overflow checking using check_mul_overflow() and check_add_overflow() kernel helpers to safety validate all size calculations before allocation.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Linux | Linux | ae021a904ac82d9fc81c25329d3c465c5a7d5686 | - | - |
cpe:2.3:a:linux:linux:ae021a904ac82d9fc81c25329d3c465c5a7d5686:*:*:*:*:*:*:*
|
| Linux | Linux | 451bffa366f2cc0e5314807cb847f31c0226efed | - | - |
cpe:2.3:a:linux:linux:451bffa366f2cc0e5314807cb847f31c0226efed:*:*:*:*:*:*:*
|
| Linux | Linux | 2c455e9c5865861f5ce09c5f596909495ed7657c | - | - |
cpe:2.3:a:linux:linux:2c455e9c5865861f5ce09c5f596909495ed7657c:*:*:*:*:*:*:*
|
| Linux | Linux | 72f099805dbc907fbe8fa19bccdc31d3e2ee6e9e | - | - |
cpe:2.3:a:linux:linux:72f099805dbc907fbe8fa19bccdc31d3e2ee6e9e:*:*:*:*:*:*:*
|
| Linux | Linux | 34cf1aff169dc6dedad8d79da7bf1b4de2773dbc | - | - |
cpe:2.3:a:linux:linux:34cf1aff169dc6dedad8d79da7bf1b4de2773dbc:*:*:*:*:*:*:*
|
| Linux | Linux | 5.9 | - | - |
cpe:2.3:a:linux:linux:5.9:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2025-39967 |
2025-11-11 15:23:19 | 2025-11-11 07:40:29 |
| NVD | nvd_CVE-2025-39967 |
2025-11-11 15:01:06 | 2025-11-11 07:48:18 |
| CNNVD | cnnvd_CNNVD-202510-2242 |
2025-11-11 15:12:59 | 2025-11-11 08:00:17 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 其他
- severity: SeverityLevel.MEDIUM -> SeverityLevel.UNKNOWN
- cvss_score: 未提取 -> 0.0
- cnnvd_id: 未提取 -> CNNVD-202510-2242
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']