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TI-2025-26719 Aliases CVE-2025-40047GHSA-2r8v-pxwr-9h89

io_uring/waitid: always prune wait queue entry in io_waitid_wait()

Priority LOW 33Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 20 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/waitid: always prune wait queue entry in io_waitid_wait() For a successful return, always remove our entry from the wait queue entry list. Previously this was skipped if a cancelation was in progress, but this can race with another invocation of the wait queue entry callback.

Why it matters now

EPSS 0.00163 5th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.12.53, 6.17.3, 6.18Red Hat: 4 advisoriesRed Hat: 20 fixed, 1 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.7 and later6.12.53, 6.17.3, 6.18Patch availableCNA
  • Linux VendorLinux Affected 6.7 and later Fixed in 6.12.53, 6.17.3, 6.18 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

  • Fix · CNA Linux (Linux) Fixed in 6.12.53, 6.17.3, 6.18

Red Hat 4 advisories

  • RHSA-2026:1727 Released 2026-02-02 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.58.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.58.1.el10_0, kernel-64k-devel-6.12.0-55.58.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.58.1.el10_0, kernel-64k-6.12.0-55.58.1.el10_0, kernel-64k-core-6.12.0-55.58.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.58.1.el10_0, libperf-6.12.0-55.58.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.58.1.el10_0, kernel-rt-64k-6.12.0-55.58.1.el10_0, kernel-rt-64k-core-6.12.0-55.58.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.58.1.el10_0, kernel-rt-core-6.12.0-55.58.1.el10_0, kernel-rt-debug-6.12.0-55.58.1.el10_0 +11
  • RHSA-2025:22854 Released 2025-12-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.20.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.20.1.el10_1, kernel-64k-devel-6.12.0-124.20.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.20.1.el10_1, kernel-64k-6.12.0-124.20.1.el10_1, kernel-64k-core-6.12.0-124.20.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.20.1.el10_1, libperf-6.12.0-124.20.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.20.1.el10_1, kernel-rt-64k-6.12.0-124.20.1.el10_1, kernel-rt-64k-core-6.12.0-124.20.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.20.1.el10_1, kernel-rt-core-6.12.0-124.20.1.el10_1, kernel-rt-debug-6.12.0-124.20.1.el10_1 +9
  • RHSA-2025:21933 Released 2025-11-24 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.66.1.el9_6, libperf-5.14.0-570.66.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.66.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.66.1.el9_6, kernel-64k-devel-5.14.0-570.66.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.66.1.el9_6, kernel-64k-5.14.0-570.66.1.el9_6, kernel-64k-core-5.14.0-570.66.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.66.1.el9_6, kernel-rt-64k-5.14.0-570.66.1.el9_6, kernel-rt-64k-core-5.14.0-570.66.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.66.1.el9_6, kernel-rt-core-5.14.0-570.66.1.el9_6, kernel-rt-debug-5.14.0-570.66.1.el9_6 +11
Show 1 more Red Hat advisories
  • RHSA-2025:21469 Released 2025-11-17 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.8.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.8.1.el9_7, kernel-64k-devel-5.14.0-611.8.1.el9_7 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-611.8.1.el9_7, kernel-64k-5.14.0-611.8.1.el9_7, kernel-64k-core-5.14.0-611.8.1.el9_7 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.8.1.el9_7, libperf-5.14.0-611.8.1.el9_7
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-611.8.1.el9_7, kernel-rt-64k-5.14.0-611.8.1.el9_7, kernel-rt-64k-core-5.14.0-611.8.1.el9_7 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-611.8.1.el9_7, kernel-rt-core-5.14.0-611.8.1.el9_7, kernel-rt-debug-5.14.0-611.8.1.el9_7 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2025:21933
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2025:21933
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2025:21933
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2025:21933
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2025:21933
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-40047
  2. 2026-10-03 Alias added: GHSA-2r8v-pxwr-9h89

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