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CVE-2026-97619— io_uring/rw: end write accounting from ->ki_complete

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： io_uring/rw：在 ->ki_complete 中结束写操作记账 提交 b000145e9907 将 fsnotify 调用和写操作记账（write accounting）从 kiocb 完成处理程序移出，并移入 io_req_rw_complete() 的 task_work 中。然而，只有 fsnotify 部分确实需要移动，因为它可能会睡眠（sleep）。而结束写操作记账仅仅是调用 superblock writers 信号量上的 percpu_up_re

AI Predicted 5.5 Difficulty: Hard EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux b000145e9907809406d8164c3b2b8861d95aecd1< 696459029f3b65c070c91b729478475582f1dcdf affected
b000145e9907809406d8164c3b2b8861d95aecd1< cc580cee4dfa2ec9099c30ecbd4d804cbb996432 affected
b000145e9907809406d8164c3b2b8861d95aecd1< 055d43a1233edbd80e558889258105ce63051bcd affected
b000145e9907809406d8164c3b2b8861d95aecd1< 796aa0547557e63338657ed1c487906f9fac4c73 affected
ea2e6286e3e89a115ae554e20ba9aec2b2e1ddff affected
89a410dbd0f159ddd308f19d6eb682fc753e4771 affected
2a853c206e553dd9c0a55c22858fd6a446d93e15 affected
5.10.165< 5.11 affected
… +8 more rows
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I. Basic Information for CVE-2026-97619

Vulnerability Information
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Vulnerability Title
io_uring/rw: end write accounting from ->ki_complete
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: end write accounting from ->ki_complete Commit b000145e9907 moved both the fsnotify calls and the write accounting out of the kiocb completion handler and into the io_req_rw_complete() task_work. However, only the fsnotify part actually needed to move as it may sleep. Ending the write accounting is just a percpu_up_read() on the superblock writers sem. Deferring it is a problem, because it makes dropping SB_FREEZE_WRITE protection depend on the ring owner getting to running task_work. But the task may be blocked in freeze_super(), causing it to never get to that: task io-wq worker -------------------------------------------------------------- io_write() io_kiocb_start_write() (takes sb_writers, hidden from lockdep by __sb_writers_release) write_iter() -> -EIOCBQUEUED ioctl(FS_IOC_SHUTDOWN) bdev_freeze() freeze_super() percpu_down_write() <- waits for the reader above io_write() kiocb_start_write() percpu_down_read() <- queued behind the writer <bio completes> io_complete_rw() queues io_req_rw_complete() <- never runs, task is in D state End the write from io_complete_rw() instead, and leave only the fsnotify calls in task_work.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux b000145e9907809406d8164c3b2b8861d95aecd1 ~ 696459029f3b65c070c91b729478475582f1dcdf -
Linux Linux 6.1 -

II. Public POCs for CVE-2026-97619

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III. Intelligence Information for CVE-2026-97619

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Patches & Fixes for CVE-2026-97619 (4)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98122 7.8 HIGH vxlan: mdb: Fix use-after-free in vxlan_mdb_remote_src_del()
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-98002 7.8 HIGH iommu/amd: Fix ineffective error check in nested domain allocation
CVE-2026-98116 7.8 HIGH ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF
CVE-2026-97580 7.8 HIGH media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-97619

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