CVE-2026-64115— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于vsock/vmci在握手期间对对等方重置连接处理不当，导致释放后重用，可能造成内存写入释放对象。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | d021c344051af91f42c5ba9fdedc176740cbd238< 1e19f08552b90070ed18bafb1763c78297823af6 |
affected |
d021c344051af91f42c5ba9fdedc176740cbd238< 1dd531e28f61edd286edc486ab068f135b5ae1eb |
affected | ||
d021c344051af91f42c5ba9fdedc176740cbd238< ecda37f8faab3220da199335e42564cb7a9ad145 |
affected | ||
d021c344051af91f42c5ba9fdedc176740cbd238< cc27e989a5dfdfcfc1cca7c3be27a0c7532b46cb |
affected | ||
d021c344051af91f42c5ba9fdedc176740cbd238< 47e63077605c6c2aa45b3df9847a8cdc1f1f6ef9 |
affected | ||
d021c344051af91f42c5ba9fdedc176740cbd238< 440447699c681e26ed58e9c309cad718270a18b4 |
affected | ||
d021c344051af91f42c5ba9fdedc176740cbd238< 9fe74e42914c851d68069713b7b917a9c33faf26 |
affected | ||
d021c344051af91f42c5ba9fdedc176740cbd238< 99e22ddf4edb63dc8382bc028af928056d3450cf |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-64115 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
vsock/vmci: fix UAF when peer resets connection during handshake
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
vsock/vmci: fix UAF when peer resets connection during handshake
vmci_transport_recv_connecting_server() returned err = 0 for a peer
RST in its default switch arm:
err = pkt->type == VMCI_TRANSPORT_PACKET_TYPE_RST ? 0 : -EINVAL;
That made vmci_transport_recv_listen() skip vsock_remove_pending(),
leaving the pending socket on the listener's pending_links with
sk_state = TCP_CLOSE while destroy: still dropped the explicit
reference taken before schedule_delayed_work().
One second later vsock_pending_work() observed is_pending=true and
performed full cleanup: vsock_remove_pending() then the two trailing
sock_put(sk) calls -- the first reached refcount 0 and __sk_freed
the socket, and the second wrote into the freed object:
BUG: KASAN: slab-use-after-free in refcount_warn_saturate
Write of size 4 at addr ffff88800b1cac80 by task kworker
Workqueue: events vsock_pending_work
Treat peer RST like any other unexpected packet type (err = -EINVAL).
All destroy: arms now return err < 0, so vmci_transport_recv_listen()
removes pending from pending_links synchronously and
vsock_pending_work() takes the is_pending=false / !rejected branch,
dropping only its own work reference. This also closes the
multi-packet race Sashiko reported on v2: pending is removed from
the list before any subsequent packet can find it.
The pre-existing sk_acceptq_removed() gap on the err < 0 path of
vmci_transport_recv_listen() that Sashiko also noted is not
introduced or changed by this patch.
Tested on lts-6.12.79 with KASAN: 52/100 unpatched -> 0/100 patched.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于vsock/vmci在握手期间对对等方重置连接处理不当，导致释放后重用，可能造成内存写入释放对象。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-64115 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-64115 补丁与修复 (6)
同批安全公告 · Linux · 2026-07-19 · 共 429 条
| CVE-2026-63795 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63825 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63994 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63993 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64142 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64033 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53399 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53398 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64056 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64061 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64089 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64025 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64125 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64091 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64132 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64136 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63979 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63887 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63978 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-63808 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
显示前 20 条，共 429 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-64115
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