CVE-2025-68740 (CNNVD-202512-4324)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
ima: Handle error code returned by ima_filter_rule_match()
CVSS分数: N/A
发布时间: 2025-12-24 12:09:37
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，该漏洞源于未正确处理ima_filter_rule_match返回的错误码，可能导致额外文件被测量。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: ima: Handle error code returned by ima_filter_rule_match() In ima_match_rules(), if ima_filter_rule_match() returns -ENOENT due to the rule being NULL, the function incorrectly skips the 'if (!rc)' check and sets 'result = true'. The LSM rule is considered a match, causing extra files to be measured by IMA. This issue can be reproduced in the following scenario: After unloading the SELinux policy module via 'semodule -d', if an IMA measurement is triggered before ima_lsm_rules is updated, in ima_match_rules(), the first call to ima_filter_rule_match() returns -ESTALE. This causes the code to enter the 'if (rc == -ESTALE && !rule_reinitialized)' block, perform ima_lsm_copy_rule() and retry. In ima_lsm_copy_rule(), since the SELinux module has been removed, the rule becomes NULL, and the second call to ima_filter_rule_match() returns -ENOENT. This bypasses the 'if (!rc)' check and results in a false match. Call trace: selinux_audit_rule_match+0x310/0x3b8 security_audit_rule_match+0x60/0xa0 ima_match_rules+0x2e4/0x4a0 ima_match_policy+0x9c/0x1e8 ima_get_action+0x48/0x60 process_measurement+0xf8/0xa98 ima_bprm_check+0x98/0xd8 security_bprm_check+0x5c/0x78 search_binary_handler+0x6c/0x318 exec_binprm+0x58/0x1b8 bprm_execve+0xb8/0x130 do_execveat_common.isra.0+0x1a8/0x258 __arm64_sys_execve+0x48/0x68 invoke_syscall+0x50/0x128 el0_svc_common.constprop.0+0xc8/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x44/0x200 el0t_64_sync_handler+0x100/0x130 el0t_64_sync+0x3c8/0x3d0 Fix this by changing 'if (!rc)' to 'if (rc <= 0)' to ensure that error codes like -ENOENT do not bypass the check and accidentally result in a successful match.

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 - < c2238d487a640ae3511e1b6f4640ab27ce10d7f6 - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 2.6.30 - - cpe:2.3:a:linux:linux:2.6.30:*:*:*:*:*:*:*
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
访问
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
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
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:
2025-12-24 12:09:37
修改时间:
2025-12-24 12:09:37
创建时间:
2026-01-12 02:12:31
更新时间:
2026-01-20 03:10:43
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-2025-68740 2025-12-25 02:03:31 2026-01-12 02:12:31
NVD nvd_CVE-2025-68740 2025-12-30 04:12:19 2026-01-12 02:28:14
CNNVD cnnvd_CNNVD-202512-4324 2026-01-11 06:15:05 2026-01-12 02:38:05
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 03:36:52
references_count: 4 → 6
查看详细变更
  • references_count: 4 -> 6
v3 CNNVD
2026-01-12 02:38:05
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-202512-4324; 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-202512-4324
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2026-01-12 02:28:14
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']