CVE-2026-89971— Linux内核 nvme驱动 分区信息更新失败绕过漏洞
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。
在 Linux 内核中，以下漏洞已得到解决： nvme：如果分区信息（zone info）查询失败，则跳过分区限制的更新 函数要么返回一个负的 errno，要么返回一个正的 NVMe 状态码，但 仅检查了负值情况： 如果设备执行 Identify Namespace（I/O 命令集特定）命令或 发出的 Identify Controller 命令失败，返回的正状态码会“漏过”检查，导致后续设置继续执行，而使用的分区信息是零初始化的。随后 会将队列标记为分区式（zoned），并将 和 设置为零。 由于 不检查 ，因此
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c85c9ab926a592e2f59f7d9a6ca7d6562843d8fa< a75258e651d91ec25424cd94d824d192c11ccc24 |
affected |
c85c9ab926a592e2f59f7d9a6ca7d6562843d8fa< 7fad53ae2052a2b4fc7ca567d6555bdb1176ba35 |
affected | ||
c85c9ab926a592e2f59f7d9a6ca7d6562843d8fa< bb6dafa79040357cf5043836e1db108c2af8b1e1 |
affected | ||
c85c9ab926a592e2f59f7d9a6ca7d6562843d8fa< 3838e80fcfb32e62baffb63c6dc0a60153665a4d |
affected | ||
6.9 |
affected | ||
< 6.9 |
unaffected | ||
6.12.112≤ 6.12.* |
unaffected | ||
6.18.52≤ 6.18.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2026-89971 基础信息
漏洞信息
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Vulnerability Title
nvme: skip the zoned limits update if the zone info query failed
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
nvme: skip the zoned limits update if the zone info query failed
nvme_query_zone_info() returns either a negative errno or a positive
NVMe status code, but nvme_update_ns_info_block() only tests for the
negative case:
ret = nvme_query_zone_info(ns, lbaf, &zi);
if (ret < 0)
goto out;
If the device fails the Identify Namespace (I/O Command Set specific)
command, or the Identify Controller command issued by
nvme_set_max_append(), the positive status falls through and setup
continues with the zero-initialized zone info. nvme_update_zone_info()
then marks the queue zoned with chunk_sectors and ns->head->zsze set to
zero.
blk_validate_zoned_limits() does not check chunk_sectors, so the limits
commit succeeds. blk_revalidate_disk_zones() does reject the zero zone
size, but by then the limits are live and nothing rolls them back, so
I/O keeps being submitted to a zoned queue with a zero zone size and
disk_zone_no() shifts by ilog2(0):
nvme0n1: Invalid non power of two zone size (0)
UBSAN: shift-out-of-bounds in include/linux/blkdev.h:747:16
shift exponent -1 is negative
disk_zone_no include/linux/blkdev.h:747 [inline]
bio_straddles_zones include/linux/blkdev.h:1058 [inline]
blk_zone_wplug_handle_write block/blk-zoned.c:1423 [inline]
blk_zone_plug_bio.cold+0x25/0x1c8 block/blk-zoned.c:1605
blk_mq_submit_bio+0x18fb/0x2870 block/blk-mq.c:3196
submit_bh_wbc+0x575/0x740 fs/buffer.c:2824
__block_write_full_folio+0x728/0xdd0 fs/buffer.c:1933
Any device, firmware or NVMe-oF target that fails this one command
reaches this.
Skip the zoned limits update in that case, and log which of the two
things happened: during a revalidation the queue keeps the zone
geometry it was last validated with, and on a first scan the namespace
is registered without zoned limits, so that it is still available as a
handle for admin commands. Neither of the paths in
nvme_query_zone_info() that return a positive status logs anything, so
the failure would otherwise be silent.
zi.zone_size is an exact indicator: every path that returns a positive
status returns before it is assigned, and after that the only failure
left is -ENODEV, which the caller already handles.
Found by FuzzNvme.
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-2026-89971 的公开POC
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|---|
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CVE-2026-89971 补丁与修复 (1)
CVE-2026-89971 其他参考 (3)
同批安全公告 · Linux · 2026-09-16 · 共 276 条
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| CVE-2026-90038 | 9.8 CRITICAL | Linux内核NFSD导出撤销后使用漏洞 |
| CVE-2026-90037 | 9.8 CRITICAL | Linux内核NFSD close_lru释放后使用漏洞 |
| CVE-2026-89788 | 9.8 CRITICAL | Linux kernel ksmbd 释放后使用漏洞 |
| CVE-2026-89783 | 9.8 CRITICAL | Linux内核 xfrm6 越界写入漏洞 |
| CVE-2026-90042 | 9.8 CRITICAL | Ceph 虚拟内存分配缓冲区文件名解密漏洞 |
| CVE-2026-89778 | 9.8 CRITICAL | isofs 空 zisofs 块页面数组越界访问漏洞 |
| CVE-2026-89915 | 9.3 CRITICAL | KVM arm64 移除虚拟机级 VNCR 映射计数器 |
| CVE-2026-90049 | 9.3 CRITICAL | 内核网络子系统中skb_zerocopy处理中的缺陷 |
| CVE-2026-89775 | 9.3 CRITICAL | KVM arm64 VNCR TLB大小计算漏洞 |
| CVE-2026-89916 | 9.3 CRITICAL | KVM arm64 VNCR失效重试漏洞 |
| CVE-2026-89930 | 9.3 CRITICAL | KVM嵌套虚拟化本地TLB刷新漏洞 |
显示前 20 条，共 276 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-89971
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