CVE-2026-72389— bridge: 删除网桥时存在潜在 use-after-free 漏洞
可能的 ATT&CK 技术 1AI
T1499 · Endpoint Denial of Service影响版本矩阵 16
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c86579b0a2d201792bcb59316629f4ba4758cfc8 | affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 297a747f59bff6573196d7236178144d66524e68 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4c40eec06eeac37c58e47a6058eb32901218d5d4 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 39283907a25e5caf0f2bd2947f6e56644b01e2b7 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b4b3458ef88df4798632619f018791d4344bcd92 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 40cbfa3a28e0919469d1b086629bb3ce38a83593 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 2a00517db8de4be7df3d483b215c5544fb30a191 | affected | ||
2.6.12 | affected | ||
| … +8 条更多 | |||
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一、 漏洞 CVE-2026-72389 基础信息
漏洞信息
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Vulnerability Title
bridge: stp: Fix a potential use-after-free when deleting a bridge
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bridge: stp: Fix a potential use-after-free when deleting a bridge The three STP timers are not supposed to be armed while the bridge is administratively down. They are synchronously deactivated when the bridge is put administratively down and the various call sites check for 'IFF_UP' before arming them. This check is missing from br_topology_change_detection() and it is possible to engineer a situation in which the topology change timer is armed while the bridge is administratively down, resulting in a use-after-free [1] when the bridge is deleted. Fix by adding the missing check and for good measures synchronously shutdown the three timers when the bridge is deleted. [1] ODEBUG: free active (active state 0) object: ffff88811662b9b0 object type: timer_list hint: br_topology_change_timer_expired (net/bridge/br_stp_timer.c:120) WARNING: lib/debugobjects.c:629 at debug_print_object+0x1bc/0x450, CPU#9: ip/359
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-72389 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-72389 补丁与修复 (6)
同批安全公告 · Linux · 2026-08-15 · 共 848 条
| CVE-2026-72255 | netfilter nf_queue 桥接设备 pin 漏洞 | |
| CVE-2026-72268 | t dfxfb tdfxfb_probe 内存泄漏漏洞 | |
| CVE-2026-72267 | fbdev carminefb alloc_carmine_fb()潜在内存泄漏漏洞 | |
| CVE-2026-72266 | vesafb: vesafb_probe() 内存泄漏漏洞 | |
| CVE-2026-72265 | NVIDIA fbdev 驱动 nvidiafb_probe 内存泄漏漏洞 | |
| CVE-2026-72264 | tridentfb：trident_pci_probe() 潜在内存泄漏 | |
| CVE-2026-72262 | ASoC: SOF: bytes_ext 堆溢出漏洞 | |
| CVE-2026-72263 | ASoC SOF拓扑内存泄漏漏洞 | |
| CVE-2026-72261 | ASoC SOF ipc3-control 验证 snd_sof_update_control 中的大小 | |
| CVE-2026-72260 | Mediatek MT8192 SoC驱动运行时恢复检查漏洞 | |
| CVE-2026-72259 | mediatek mt8192 资源释放漏洞 | |
| CVE-2026-72258 | MT8183内存清理释放漏洞 | |
| CVE-2026-72256 | netfilter xt_cluster 哈希匹配中拒绝模板连接跟踪漏洞 | |
| CVE-2026-72257 | qcom q6apm NULL指针解引用漏洞 | |
| CVE-2026-72245 | host1x: host1x_device_parse_dt() 设备引用泄露漏洞 | |
| CVE-2026-72248 | netfilter flowtable IPIP隧道直接转发漏洞 | |
| CVE-2026-72247 | Linux内核 nf_conncount 连接数模块元组去重时区域比较逻辑错误漏洞 | |
| CVE-2026-72246 | netfilter flowtable 隧道路由方向设置错误漏洞 | |
| CVE-2026-72249 | netfilter flowtable IPIP头部推送方向目标地址使用漏洞 | |
| CVE-2026-72244 | gpu/buddy：对齐失败时终止try_harder |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-72389
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