CVE-2026-72220— sunrpc 远程过程调用信息生命周期处理不当导致双重释放漏洞
影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | d9adbb6e10bf7d4223d3d521ede1b2052903bc5e< 66014ab165cb01bfef5836939412a8ef98d5d5ff | affected |
d9adbb6e10bf7d4223d3d521ede1b2052903bc5e< 31ba490c02d476a5e4f90b8845932ac9db8aa71b | affected | ||
d9adbb6e10bf7d4223d3d521ede1b2052903bc5e< 18d216788bef06332ff8901670ecf1ed8f6eb614 | affected | ||
6.18 | affected | ||
< 6.18 | unaffected | ||
6.18.40≤ 6.18.* | unaffected | ||
7.1.5≤ 7.1.* | unaffected | ||
7.2-rc1≤ * | unaffected |
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一、 漏洞 CVE-2026-72220 基础信息
漏洞信息
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Vulnerability Title
sunrpc: harden rq_procinfo lifecycle to prevent double-free
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sunrpc: harden rq_procinfo lifecycle to prevent double-free The svc_release_rqst() function executes the callback inside rqstp->rq_procinfo->pc_release. However, if a worker thread begins processing a new request and encounters an early error path (e.g., unsupported protocol, short frame, or bad auth) before a valid rq_procinfo is installed, a stale release hook can be re-triggered against reused state from the previous RPC, resulting in a double-free or use-after-free vulnerability. Harden the lifecycle of rq_procinfo by: 1. Ensuring svc_release_rqst() always clears rq_procinfo after the optional pc_release() call, regardless of whether the hook exists. 2. Explicitly clearing rq_procinfo at request entry in svc_process() before any early decode or drop paths. 3. Ensuring svc_process_bc() does the same at backchannel entry. This guarantees that error flows will not encounter a non-NULL stale rq_procinfo pointer when there is nothing to release.
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-2026-72220 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-72220 补丁与修复 (3)
同批安全公告 · Linux · 2026-08-15 · 共 848 条
| CVE-2026-72257 | qcom q6apm NULL指针解引用漏洞 | |
| CVE-2026-72269 | uvesafb 模块 uvesafb_probe 函数潜在内存泄漏漏洞 | |
| 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-2026-72246 | 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-2026-72248 | 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-2026-72250 | Netfilter nf_conntrack 漏洞：IPv6分片重组后mac_header调整防护 | |
| CVE-2026-72245 | host1x: host1x_device_parse_dt() 设备引用泄露漏洞 |
显示前 20 条，共 848 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-72220
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