CVE-2026-90302— OCFS2 心跳回调与网络拆除同步漏洞
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。
以下是该 Linux 内核漏洞描述的中文翻译： 在 Linux 内核中，已修复以下漏洞： ocfs2：同步心跳回调与 o2net 拆卸流程 补丁系列：“ocfs2：加固心跳拆卸时的竞态条件” 该补丁系列修复了两个由 KASAN 发现的 OCFS2 心跳/o2net 拆卸竞态条件。 本补丁（第 2 个）： 在 configfs 本地节点拆卸流程进入 期间，心跳回调仍然处于注册状态。当拆卸过程正在销毁 时，节点宕机事件仍可能执行 和 ，导致后续的队列/刷新操作命中一个已经失效的工作队列。KASAN 将其捕获为 中的 s
可能的 ATT&CK 技术 1 AI
T1505 · Server Software Component影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 98211489d4147e41b11703e4245846d60b3acce4< 7601db4c9d3bd9ab2482a863cb05204154d51ae8 |
affected |
98211489d4147e41b11703e4245846d60b3acce4< fb61882e184ee5ca745806bc5b2a8483fa129bca |
affected | ||
98211489d4147e41b11703e4245846d60b3acce4< a03078a9a2a1c5e4a62f65d389c1f75f9898e21d |
affected | ||
98211489d4147e41b11703e4245846d60b3acce4< cbb4efc2f99d6a8dba09c96b10acad82da982cf9 |
affected | ||
98211489d4147e41b11703e4245846d60b3acce4< 8f96b78314cff0778a3466e49e5edbc1e459c95c |
affected | ||
98211489d4147e41b11703e4245846d60b3acce4< aee687a2fb36974dc37e4e0f5b03802067c6c4ec |
affected | ||
98211489d4147e41b11703e4245846d60b3acce4< 073f51e39bed354452a057d38a4cc3952727c304 |
affected | ||
98211489d4147e41b11703e4245846d60b3acce4< 3e326f3bf16506873777444608e8b715aab74a7a |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-90302 基础信息
漏洞信息
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Vulnerability Title
ocfs2: synchronize heartbeat callbacks with o2net teardown
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: synchronize heartbeat callbacks with o2net teardown
Patch series "ocfs2: harden heartbeat teardown races".
This series fixes two OCFS2 heartbeat/o2net teardown races found by
KASAN.
This patch (of 2):
Heartbeat callbacks stay registered while configfs local-node teardown
enters o2net_stop_listening(). A node-down event can still run through
o2net_disconnect_node() and o2net_set_nn_state() while teardown is
destroying o2net_wq, so the later queue/flush operations can hit a dead
workqueue. KASAN has caught this as a slab-use-after-free in
__queue_work() with the call chain:
KASAN slab-use-after-free in __queue_work+0x56/0xa90
Read of size 4
Call trace:
dump_stack_lvl+0x66/0xa0
print_report+0xce/0x630
__queue_work+0x56/0xa90
srso_alias_return_thunk+0x5/0xfbef5
__virt_addr_valid+0x19f/0x330
kasan_report+0xe0/0x110
__queue_delayed_work+0x58/0x1e0
queue_delayed_work_on+0xb4/0xc0
o2net_set_nn_state+0x467/0x840
o2net_disconnect_node+0x7b/0xe0
o2net_hb_node_down_cb+0x54/0x60
o2hb_run_event_list+0x236/0x2d0
o2hb_check_slot+0xad4/0xbc0
lock_release+0xc8/0x290
o2hb_check_slot+0x9ea/0xbc0
trace_hardirqs_on+0x18/0x130
o2hb_do_disk_heartbeat+0x646/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)
__lock_acquire+0x466/0x2260
lockdep_hardirqs_on_prepare+0xea/0x1a0
ktime_get_with_offset+0xe9/0x230
o2hb_thread+0x14e/0x770
kthread+0x1ad/0x1f0
ret_from_fork+0x3c9/0x540
__switch_to+0x2e9/0x730
ret_from_fork_asm+0x1a/0x30
Allocated by task stack:
kasan_save_stack+0x33/0x60
kasan_save_track+0x14/0x30
__kasan_kmalloc+0xaa/0xb0
__kmalloc_noprof+0x292/0x760
__alloc_workqueue+0x736/0xc60
alloc_workqueue_noprof+0xb1/0x110
o2net_start_listening+0xe5/0x430
o2nm_node_local_store+0x184/0x310
configfs_write_iter+0x18a/0x210
vfs_write+0x469/0x810
ksys_write+0xd2/0x170
do_syscall_64+0x115/0x6a0 (arch/x86/entry/syscall_64.c:87)
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task stack:
kasan_save_stack+0x33/0x60
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x5f/0x80
kfree+0x313/0x590
rcu_core+0x4f4/0x1320
handle_softirqs+0x156/0x660
queue_delayed_work_on
o2net_set_nn_state
o2net_disconnect_node
o2net_hb_node_down_cb
o2hb_run_event_list
Keep heartbeat callbacks registered so quorum state still tracks node
state, but stop them from driving o2net reconnect/disconnect work once
local teardown starts. Mark the transport offline before destroying
o2net_wq, wait for any in-flight heartbeat callback to finish, and delay
bring-up replay until the new local node is published through
o2nm_this_node().
The replay also has to stay serialized with heartbeat callback delivery.
Otherwise a live-node snapshot can be copied, a real hb_down callback
can install -ENOTCONN for a peer, and the stale replay can call
o2net_hb_node_up() for that same peer and queue reconnect work even
though heartbeat is already down.
The buggy scenario involves two paths, with each column showing the order
within that path:
local-node teardown: heartbeat node-down callback:
1. configfs local-off enters 1. o2hb_run_event_list() invokes
o2net_stop_listening(). o2net_hb_node_down_cb().
2. teardown heads for 2. the callback reaches
destroy_workqueue(o2net_wq). o2net_disconnect_node() and
o2net_set_nn_state().
3. teardown destroys and NULLs 3. the callback flushes or queues
o2net_wq. work through o2net_wq.
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-2026-90302 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-90302 补丁与修复 (8)
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-2026-90235 | 9.8 CRITICAL | 内核sunrpc xprtsock并发读取修复 |
| 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-2026-90110 | 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-2026-90302
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