CVE-2025-68758 (CNNVD-202601-869)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
backlight: led-bl: Add devlink to supplier LEDs
CVSS分数: N/A
发布时间: 2026-01-05 09:32:31
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v5
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led-bl背光驱动中devlink未正确链接到供应商LED，可能导致移除顺序错误。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: backlight: led-bl: Add devlink to supplier LEDs LED Backlight is a consumer of one or multiple LED class devices, but devlink is currently unable to create correct supplier-producer links when the supplier is a class device. It creates instead a link where the supplier is the parent of the expected device. One consequence is that removal order is not correctly enforced. Issues happen for example with the following sections in a device tree overlay: // An LED driver chip pca9632@62 { compatible = "nxp,pca9632"; reg = <0x62>; // ... addon_led_pwm: led-pwm@3 { reg = <3>; label = "addon:led:pwm"; }; }; backlight-addon { compatible = "led-backlight"; leds = <&addon_led_pwm>; brightness-levels = <255>; default-brightness-level = <255>; }; In this example, the devlink should be created between the backlight-addon (consumer) and the pca9632@62 (supplier). Instead it is created between the backlight-addon (consumer) and the parent of the pca9632@62, which is typically the I2C bus adapter. On removal of the above overlay, the LED driver can be removed before the backlight device, resulting in: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 ... Call trace: led_put+0xe0/0x140 devm_led_release+0x6c/0x98 Another way to reproduce the bug without any device tree overlays is unbinding the LED class device (pca9632@62) before unbinding the consumer (backlight-addon): echo 11-0062 >/sys/bus/i2c/drivers/leds-pca963x/unbind echo ...backlight-dock >/sys/bus/platform/drivers/led-backlight/unbind Fix by adding a devlink between the consuming led-backlight device and the supplying LED device, as other drivers and subsystems do as well.

CWE类型:
（暂无数据）
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Linux Linux - < 0e63ea4378489e09eb5e920c8a50c10caacf563a - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 5.6 - - cpe:2.3:a:linux:linux:5.6:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
无标题 OTHER
cve.org
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cve.org
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无标题 OTHER
cve.org
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无标题 OTHER
cve.org
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416baaa9-dc9f-4396-8d5f-8c081fb06d67 OTHER
nvd.nist.gov
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416baaa9-dc9f-4396-8d5f-8c081fb06d67 OTHER
nvd.nist.gov
访问
416baaa9-dc9f-4396-8d5f-8c081fb06d67 OTHER
nvd.nist.gov
访问
416baaa9-dc9f-4396-8d5f-8c081fb06d67 OTHER
nvd.nist.gov
访问
CVSS评分详情
暂无CVSS评分信息
时间信息
发布时间:
2026-01-05 09:32:31
修改时间:
2026-01-05 09:32:31
创建时间:
2026-01-12 02:12:31
更新时间:
2026-01-20 03:10:52
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2025-68758 2026-01-07 02:47:25 2026-01-12 02:12:31
NVD nvd_CVE-2025-68758 2026-01-09 03:00:07 2026-01-12 02:28:15
CNNVD cnnvd_CNNVD-202601-869 2026-01-11 06:15:07 2026-01-12 02:38:16
版本与语言
当前版本: v5
主要语言: EN
支持语言:
ZH EN
安全公告
暂无安全公告信息
变更历史
v5 NVD
2026-01-20 03:10:37
references_count: 6 → 8
查看详细变更
  • references_count: 6 -> 8
v4 NVD
2026-01-12 03:36:53
references_count: 4 → 6
查看详细变更
  • references_count: 4 -> 6
v3 CNNVD
2026-01-12 02:38:16
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-202601-869; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
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-202601-869
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2026-01-12 02:28:15
affected_products_count: 5 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 5 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']