CVE-2023-54243 (CNNVD-202512-5219)
中文标题:
Linux kernel 安全漏洞
英文标题:
netfilter: ebtables: fix table blob use-after-free
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,该漏洞源于表blob释放后重用,可能导致越界访问。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix table blob use-after-free We are not allowed to return an error at this point. Looking at the code it looks like ret is always 0 at this point, but its not. t = find_table_lock(net, repl->name, &ret, &ebt_mutex); ... this can return a valid table, with ret != 0. This bug causes update of table->private with the new blob, but then frees the blob right away in the caller. Syzbot report: BUG: KASAN: vmalloc-out-of-bounds in __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168 Read of size 4 at addr ffffc90005425000 by task kworker/u4:4/74 Workqueue: netns cleanup_net Call Trace: kasan_report+0xbf/0x1f0 mm/kasan/report.c:517 __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168 ebt_unregister_table+0x35/0x40 net/bridge/netfilter/ebtables.c:1372 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:613 ... ip(6)tables appears to be ok (ret should be 0 at this point) but make this more obvious.
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 | a3bc0f8ea439762aa62d40a295157410498cbea7 | - | - |
cpe:2.3:a:linux:linux:a3bc0f8ea439762aa62d40a295157410498cbea7:*:*:*:*:*:*:*
|
| Linux | Linux | 8ed40c122919cd79bc3c059e5864e5e7d9d455f0 | - | - |
cpe:2.3:a:linux:linux:8ed40c122919cd79bc3c059e5864e5e7d9d455f0:*:*:*:*:*:*:*
|
| Linux | Linux | c5e4ef499cfc78de45a4f01b8c557b5964d77c53 | - | - |
cpe:2.3:a:linux:linux:c5e4ef499cfc78de45a4f01b8c557b5964d77c53:*:*:*:*:*:*:*
|
| Linux | Linux | f34728610b2a8c7b9864f9404f2884c17f6fca5c | - | - |
cpe:2.3:a:linux:linux:f34728610b2a8c7b9864f9404f2884c17f6fca5c:*:*:*:*:*:*:*
|
| Linux | Linux | 8b5740915a9faa8b1fa9166193a33e2a9ae30ec6 | - | - |
cpe:2.3:a:linux:linux:8b5740915a9faa8b1fa9166193a33e2a9ae30ec6:*:*:*:*:*:*:*
|
| Linux | Linux | 3.15 | - | - |
cpe:2.3:a:linux:linux:3.15:*:*:*:*:*:*:*
|
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-2023-54243 |
2025-12-31 03:16:25 | 2026-01-12 02:09:23 |
| NVD | nvd_CVE-2023-54243 |
2026-01-01 04:27:49 | 2026-01-12 02:27:09 |
| CNNVD | cnnvd_CNNVD-202512-5219 |
2026-01-11 06:15:04 | 2026-01-12 02:38:09 |
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-202512-5219
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']