CVE-2026-72438— Linux内核md/raid10丢弃失败时引用泄漏漏洞
可能的 ATT&CK 技术 1AI
T1499 · Endpoint Denial of Service影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c9aa889b035fca4598ae985a0f0c76ebbb547ad2< d1324b41dabd26787559efaeb430643c627c1eb0 | affected |
c9aa889b035fca4598ae985a0f0c76ebbb547ad2< 393d687131d8aa8c7e4de2cb494438e145d20fc2 | affected | ||
39db562b3fedb93978a7e42dd216b306740959f8 | affected | ||
5.15.111< 5.16 | affected | ||
5.17 | affected | ||
< 5.17 | unaffected | ||
7.1.5≤ 7.1.* | unaffected | ||
7.2≤ * | unaffected |
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一、 漏洞 CVE-2026-72438 基础信息
漏洞信息
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Vulnerability Title
md/raid10: fix writes_pending and barrier reference leaks on discard failures
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix writes_pending and barrier reference leaks on discard failures raid10_make_request() acquires a writes_pending reference with md_write_start() before calling raid10_handle_discard(). Several failure paths in raid10_handle_discard() complete the bio and return without releasing the corresponding reference, causing md_write_end() to be skipped. Call md_write_end() before returning from these failure paths to keep writes_pending accounting balanced. Additionally, discard split allocation failures can occur after wait_barrier() succeeds. Those paths return without calling allow_barrier(), leaking the associated barrier reference. Release the barrier before returning from those paths.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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-2026-72438 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-72438 补丁与修复 (2)
同批安全公告 · Linux · 2026-08-15 · 共 846 条
| CVE-2026-74280 | 10.0 CRITICAL | Marvell OCTEONTX 驱动 DMA清理循环索引错误漏洞 |
| CVE-2026-72407 | 10.0 CRITICAL | Geneve 内核模块 inner network offset 验证漏洞 |
| CVE-2026-72408 | 10.0 CRITICAL | Geneve GRO提示处理缺陷 |
| CVE-2026-74279 | 10.0 CRITICAL | Cavium CPT DMA清理使用错误循环索引 |
| CVE-2026-74475 | 10.0 CRITICAL | vxlan 短路由中 neigh_ha_snapshot() 使用错误 |
| CVE-2026-74309 | 10.0 CRITICAL | vdpa/octeon_ep 中断处理程序 IRQ 到环映射错误 |
| CVE-2026-72421 | 10.0 CRITICAL | IPv4 fib 本地/主表忽略错误路由 |
| CVE-2026-72493 | 9.9 CRITICAL | net: 在 enqueue_to_backlog() 中序列化 netif_running() 检查 |
| CVE-2026-72463 | 9.8 CRITICAL | xfrm: 异步恢复中设备使用后释放漏洞 |
| CVE-2026-72248 | 9.8 CRITICAL | netfilter flowtable IPIP隧道直接转发漏洞 |
| CVE-2026-72381 | 9.8 CRITICAL | ksmbd 耐久句柄检查中的use-after-free漏洞 |
| CVE-2026-72477 | 9.8 CRITICAL | NTFS3 重命名失败时调用 _ntfs_bad_inode 漏洞 |
| CVE-2026-72473 | 9.8 CRITICAL | xprtrdma 远程代码执行漏洞 |
| CVE-2026-72472 | 9.8 CRITICAL | NFS 使用rwsem保护文件锁列表遍历 |
| CVE-2026-74406 | 9.8 CRITICAL | VXLAN 内核模块远程代码执行漏洞 |
| CVE-2026-72221 | 9.8 CRITICAL | SunRPC TLS握手回调竞态条件漏洞 |
| CVE-2026-72137 | 9.8 CRITICAL | Linux xfrm nat_keepalive发送错误时双重释放漏洞 |
| CVE-2026-74376 | 9.8 CRITICAL | md/raid10 复用r10bio处理丢弃时未重置读槽漏洞 |
| CVE-2026-74401 | 9.8 CRITICAL | dlm 发送队列有序性处理漏洞 |
| CVE-2026-72234 | 9.8 CRITICAL | batman-adv 未 realloc 时访问 skb->data 漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-72438
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