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TI-2025-26065 Aliases CVE-2025-38730GHSA-g87f-g973-9jmq

io_uring/net: commit partial buffers on retry

Priority LOW 35CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 25 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and invalidates them on retry. But on the networking side, if MSG_WAITALL is set, or if the socket is of the streaming type and too little was processed, then it will hang on to the buffer rather than recycle or commit it. This is problematic for two reasons: 1) If someone unregisters the provided buffer ring before a later retry, then the req->buf_list will no longer be valid. 2) If multiple sockers are using the same buffer group, then multiple receives can consume the same memory. This can cause data corruption in the application, as either receive could land in the same userspace buffer. Fix this by disallowing partial retries from pinning a provided buffer across multiple executions, if ring provided buffers are used.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00173 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.6.103, 6.12.44, 6.15.11 +2Red Hat: 5 advisoriesRed Hat: 25 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.4 and later6.6.103, 6.12.44, 6.15.11, 6.16.2, 6.17Patch availableCNA
  • Linux VendorLinux Affected 6.4 and later Fixed in 6.6.103, 6.12.44, 6.15.11, 6.16.2, 6.17 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.4 to before 6.6.103; 6.7 to before 6.12.44; 6.13 to before 6.15.11; 6.16 to before 6.16.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*6.17 rc1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.4 to before 6.6.103; 6.7 to before 6.12.44; 6.13 to before 6.15.11; 6.16 to before 6.16.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* Versions 6.17 rc1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.6.103, 6.12.44, 6.15.11, 6.16.2, 6.17

Red Hat 5 advisories

  • RHSA-2026:3124 Released 2026-02-24 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.61.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.61.1.el10_0, kernel-64k-devel-6.12.0-55.61.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.61.1.el10_0, kernel-64k-6.12.0-55.61.1.el10_0, kernel-64k-core-6.12.0-55.61.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.61.1.el10_0, libperf-6.12.0-55.61.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.61.1.el10_0, kernel-rt-64k-6.12.0-55.61.1.el10_0, kernel-rt-64k-core-6.12.0-55.61.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.61.1.el10_0, kernel-rt-core-6.12.0-55.61.1.el10_0, kernel-rt-debug-6.12.0-55.61.1.el10_0 +11
  • RHSA-2026:2766 Released 2026-02-17 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.111.1.el9_4, libperf-5.14.0-427.111.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.111.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.111.1.el9_4, kernel-64k-devel-5.14.0-427.111.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.111.1.el9_4, kernel-5.14.0-427.111.1.el9_4, kernel-64k-5.14.0-427.111.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.111.1.el9_4, kernel-rt-core-5.14.0-427.111.1.el9_4, kernel-rt-debug-5.14.0-427.111.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.111.1.el9_4, kernel-rt-core-5.14.0-427.111.1.el9_4, kernel-rt-debug-5.14.0-427.111.1.el9_4 +11
  • RHSA-2026:2759 Released 2026-02-16 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.89.1.el9_6, libperf-5.14.0-570.89.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.89.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.89.1.el9_6, kernel-64k-devel-5.14.0-570.89.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.89.1.el9_6, kernel-64k-5.14.0-570.89.1.el9_6, kernel-64k-core-5.14.0-570.89.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.89.1.el9_6, kernel-rt-64k-5.14.0-570.89.1.el9_6, kernel-rt-64k-core-5.14.0-570.89.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.89.1.el9_6, kernel-rt-core-5.14.0-570.89.1.el9_6, kernel-rt-debug-5.14.0-570.89.1.el9_6 +11
Show 2 more Red Hat advisories
  • RHSA-2026:2282 Released 2026-02-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.35.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.35.1.el10_1, kernel-64k-devel-6.12.0-124.35.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.35.1.el10_1, kernel-64k-6.12.0-124.35.1.el10_1, kernel-64k-core-6.12.0-124.35.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.35.1.el10_1, libperf-6.12.0-124.35.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.35.1.el10_1, kernel-rt-64k-6.12.0-124.35.1.el10_1, kernel-rt-64k-core-6.12.0-124.35.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.35.1.el10_1, kernel-rt-core-6.12.0-124.35.1.el10_1, kernel-rt-debug-6.12.0-124.35.1.el10_1 +9
  • RHSA-2026:2212 Released 2026-02-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.30.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.30.1.el9_7, kernel-64k-devel-5.14.0-611.30.1.el9_7 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-611.30.1.el9_7, kernel-64k-5.14.0-611.30.1.el9_7, kernel-64k-core-5.14.0-611.30.1.el9_7 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.30.1.el9_7, libperf-5.14.0-611.30.1.el9_7
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-611.30.1.el9_7, kernel-rt-64k-5.14.0-611.30.1.el9_7, kernel-rt-64k-core-5.14.0-611.30.1.el9_7 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-611.30.1.el9_7, kernel-rt-core-5.14.0-611.30.1.el9_7, kernel-rt-debug-5.14.0-611.30.1.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.9.4)Fixed RHSA-2026:2766
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:2212
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:3124
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:2212
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:3124
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:2212
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:3124
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:2212
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:3124
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:2212
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:3124
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:2759
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-2025-38730
  2. 2026-10-03 Alias added: GHSA-g87f-g973-9jmq
  3. 2026-10-16 CISA SSVC decision points changed

References

Patch 5

  • 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-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
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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