CVE-2026-90293— IB/isert：会话注册后发布接收缓冲区
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。
在 Linux 内核中，以下漏洞已得到修复： IB/isert：在会话注册后投递全特性接收缓冲区 会在 执行之前投递全特性接收缓冲区。因此，如果发起端（initiator）不等待最终的 Login Response 就发送命令，仍可能在一个 为 NULL 的 上执行 SCSI 命令——这与前一个补丁所修复的问题相同，触发点在 处发生内核崩溃（oops）。 修复方法： 改为从 中投递这些接收缓冲区。该函数已被前一个补丁用于发送最终 Login Response，应在发送之前投递缓冲区：接收队列在通知发起端可以使用它的
影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | b8d26b3be8b33682cf163274ed07479a70554633< 962edb9a6b0dae09d33a677485a398fc7d55968c |
affected |
b8d26b3be8b33682cf163274ed07479a70554633< 068fe9841d2585b79d479fc7b58251d02d0b066f |
affected | ||
b8d26b3be8b33682cf163274ed07479a70554633< d4f8257c3283919ca7e149381d062b9af5f7df7d |
affected | ||
b8d26b3be8b33682cf163274ed07479a70554633< 9c21a433022219ca899d1b3cd9049991f51a6a2c |
affected | ||
b8d26b3be8b33682cf163274ed07479a70554633< 9b2c61344992c8c2b883e1eebe416cc488a19390 |
affected | ||
b8d26b3be8b33682cf163274ed07479a70554633< 6c506fee5a5f2c8719c65bcfc5e5d0862b0a1946 |
affected | ||
b8d26b3be8b33682cf163274ed07479a70554633< ad4492dcaf90a1d1a728ec5eef1a68ce5355027a |
affected | ||
b8d26b3be8b33682cf163274ed07479a70554633< 5247dde9daac7e107853b6fea043f7f47be033f7 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-90293 基础信息
漏洞信息
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Vulnerability Title
IB/isert: post the full-feature receive buffers after session registration
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
IB/isert: post the full-feature receive buffers after session registration
isert_put_login_tx() posts the full-feature receive buffers before
__transport_register_session() runs, so an initiator that does not wait
for the final Login Response can still have a SCSI command executed
against an se_session whose se_tpg is NULL - the same oops as the
previous patch, at target_submit+0xbe.
Post them from isert_get_rx_pdu(), which the previous patch already uses
to send that response, and post them before that send: the receive queue
is filled at the moment the initiator is told it may use it. Allocating
there keeps the existing property that a memory allocation failure cannot
happen once the final Login Response is on the wire.
The receive queue is already empty between the final Login Request and
isert_post_recvm(); this moves the second point later, from a median of
92 us to 172 us over 1200 logins. Only an initiator that sends before it
has been told to can reach that window, and on IB and RoCE its send is
retried there until the buffers appear - isert_rdma_accept() asks for
rnr_retry_count = 7. iWARP has no RNR flow control, so there the same
send terminates the connection instead.
Measured over rxe, 400 login cycles per run, with an initiator that does
not wait: an instrumented build counted no entries to isert_recv_done()
before the buffers are posted in 10 runs, where that initiator oopsed
8 of 10 unpatched runs and 5 of 10 with only the previous patch.
Not tested: iWARP, discovery sessions over iSER, and real HCAs.
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-2026-90293 的公开POC
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|---|
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CVE-2026-90293 补丁与修复 (7)
同批安全公告 · Linux · 2026-09-17 · 共 600 条
| CVE-2026-92489 | 9.8 CRITICAL | Linux内核 xfrm 双重释放漏洞 |
| CVE-2026-90104 | 9.8 CRITICAL | NFSv4.1 解码前未清空调用列表 |
| CVE-2026-90173 | 9.8 CRITICAL | SMB SmbDirect 释放完成队列漏洞 |
| CVE-2026-90151 | 9.8 CRITICAL | NFSv4客户端分配失败回调处理漏洞 |
| CVE-2026-90235 | 9.8 CRITICAL | 内核sunrpc xprtsock并发读取修复 |
| CVE-2026-90110 | 9.4 CRITICAL | inetpeer 随机化RB树节点比较 |
| CVE-2026-90413 | 9.1 CRITICAL | IB/isert 登录PDU数据长度校验漏洞 |
| CVE-2026-90414 | 9.1 CRITICAL | IB/isert拒绝声明超出实际接收数据的PDU |
| CVE-2026-90230 | 9.1 CRITICAL | Linux内核Nvme-target堆越界读取漏洞 |
| CVE-2026-90256 | 8.8 HIGH | Linux Bluetooth L2CAP 远程代码执行漏洞 |
| CVE-2026-90357 | 8.8 HIGH | mt76驱动MT7915无线局域网远程拒绝服务漏洞 |
| CVE-2026-90286 | 8.8 HIGH | AMDGPU GFX6 计算队列PFP使用漏洞 |
| CVE-2026-90381 | 8.8 HIGH | Linux内核mt76驱动无线信道切换漏洞 |
| CVE-2026-90380 | 8.8 HIGH | MT76驱动 mt792x 使用释放后内存漏洞 |
| CVE-2026-90329 | 8.8 HIGH | Linux 内核 HID 驱动探测清理同步漏洞 |
| CVE-2026-93042 | 8.8 HIGH | Linux内核dmaengine模块资源耗尽漏洞 |
| CVE-2026-90162 | 8.8 HIGH | Linux ksmbd 锁授予UAF/双重释放竞态漏洞 |
| CVE-2026-90379 | 8.8 HIGH | Linux 内核 mt76 驱动系统崩溃漏洞 |
| CVE-2026-90367 | 8.8 HIGH | Linux内核MT7996驱动死锁漏洞 |
| CVE-2026-90371 | 8.8 HIGH | mt76 无线驱动 RXDMAD_C 竞态修复 |
显示前 20 条，共 600 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-90293
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