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TI-2026-84227 Aliases CVE-2026-99265GHSA-h7vq-7wmq-j475

Lock release in io_pipe_fixed() removes unrelated fixed files in Linux

Priority LOW 22Published · Updated

Key facts

Attack vector
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Privileges required
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User interaction
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Attack complexity
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Impact type
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Confidentiality · integrity · availability
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Fix status
Fixed

No CVSS vector from any source. Fix status from CNA.

Summary

In the Linux kernel, io_pipe_fixed() in io_uring releases the ring lock while copying pipe slot numbers back to the application. If that copy faults, the error path can remove files from fixed file table slots that were reused by other requests, so unrelated files are removed. The sources do not describe an attacker or the conditions needed to trigger it, and they report no exploitation.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In the Linux kernel, the following vulnerability has been resolved: io_uring/openclose: keep the lock in io_pipe_fixed() io_pipe_fixed() installs both ends of the pipe in the fixed file table, drops ->uring_lock, and copies the slot numbers to the application. If that faults, it takes the lock again and removes whatever is in these slots. If the request is run by io-wq the lock really is dropped in between, and the slots are visible to everybody else. By the time the error path gets to them, they may have been closed and reused, by IORING_OP_CLOSE and a direct open or accept, or by IORING_REGISTER_FILES_UPDATE. Then a file is removed from the table that has nothing to do with the failed request. Do the copy with the lock held. Faulting in user memory under ->uring_lock is fine, the registration paths do it all the time.

Why it matters now

EPSS 0.00189 8th percentileScored 2026-11-04
Fix Fixed Linux (Linux): 6.18.60, 7.2.14, 7.4-rc1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.16 and later6.18.60, 7.2.14, 7.4-rc1Patch availableCNA
  • Linux VendorLinux Affected 6.16 and later Fixed in 6.18.60, 7.2.14, 7.4-rc1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Linux kernel versions from 6.16 before 6.18.60 are affected, and fixed versions are 6.18.60, 7.2.14 and 7.4-rc1. The sources list no fixed version for Linux beyond these, so update to one of the listed fixed releases.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Linux (Linux) Fixed in 6.18.60, 7.2.14, 7.4-rc1

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-99265
  2. 2026-11-03 Alias added: GHSA-h7vq-7wmq-j475
  3. 2026-11-03 Fix available: Linux/[email protected], Linux/Linux@a3d7ee11289f657aa9af826d8f0844221292a27a · CNA
  4. 2026-11-03 1 new reference · CNA

References

Other 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences