Read the docs
TI-2025-26373 Aliases CVE-2025-39697GHSA-3fr6-pgc4-qmrv

NFS: Fix a race when updating an existing write

Priority LOW 33CWE-362Published · 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: 40 fixed, 2 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: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00159 5th percentileScored 2026-11-08
Fix Partial Linux (Linux): 5.10.242, 5.15.191, 6.1.150 +4Red Hat: 15 advisoriesRed Hat: 40 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.14 and later5.10.242, 5.15.191, 6.1.150, 6.6.104, 6.12.44, 6.16.4, 6.17Patch availableCNA
  • Linux VendorLinux Affected 4.14 and later Fixed in 5.10.242, 5.15.191, 6.1.150, 6.6.104, 6.12.44, 6.16.4, 6.17 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.14 to before 5.10.242; 5.11 to before 5.15.191; 5.16 to before 6.1.150; 6.2 to before 6.6.104; 6.7 to before 6.12.44; 6.13 to before 6.16.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*6.17 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*6.17 rc2VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.14 to before 5.10.242; 5.11 to before 5.15.191; 5.16 to before 6.1.150; 6.2 to before 6.6.104; 6.7 to before 6.12.44; 6.13 to before 6.16.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* Versions 6.17 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* Versions 6.17 rc2 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.242, 5.15.191, 6.1.150, 6.6.104, 6.12.44, 6.16.4, 6.17

Red Hat 15 advisories

  • RHSA-2026:0804 Released 2026-01-19 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.79.1.el9_6, libperf-5.14.0-570.79.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.79.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.79.1.el9_6, kernel-64k-devel-5.14.0-570.79.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.79.1.el9_6, kernel-64k-5.14.0-570.79.1.el9_6, kernel-64k-core-5.14.0-570.79.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.79.1.el9_6, kernel-rt-64k-5.14.0-570.79.1.el9_6, kernel-rt-64k-core-5.14.0-570.79.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.79.1.el9_6, kernel-rt-core-5.14.0-570.79.1.el9_6, kernel-rt-debug-5.14.0-570.79.1.el9_6 +11
  • RHSA-2025:23445 Released 2025-12-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.178.1.el8_2, kernel-4.18.0-193.178.1.el8_2, kernel-abi-whitelists-4.18.0-193.178.1.el8_2 +14
  • RHSA-2025:22998 Released 2025-12-10 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.122.1.el8_8, kernel-4.18.0-477.122.1.el8_8, kernel-abi-stablelists-4.18.0-477.122.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.122.1.el8_8, kernel-4.18.0-477.122.1.el8_8, kernel-abi-stablelists-4.18.0-477.122.1.el8_8 +14
Show 12 more Red Hat advisories
  • RHSA-2025:22752 Released 2025-12-04 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.179.1.el8_4, kernel-4.18.0-305.179.1.el8_4, kernel-abi-stablelists-4.18.0-305.179.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.179.1.el8_4, kernel-4.18.0-305.179.1.el8_4, kernel-abi-stablelists-4.18.0-305.179.1.el8_4 +14
  • RHSA-2025:22006 Released 2025-11-25 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.170.1.el8_6, kernel-4.18.0-372.170.1.el8_6, kernel-abi-stablelists-4.18.0-372.170.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.170.1.el8_6, kernel-4.18.0-372.170.1.el8_6, kernel-abi-stablelists-4.18.0-372.170.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.170.1.el8_6, kernel-4.18.0-372.170.1.el8_6, kernel-abi-stablelists-4.18.0-372.170.1.el8_6 +14
  • RHSA-2025:21920 Released 2025-11-24 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-core-4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-debug-4.18.0-553.85.1.rt7.426.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-core-4.18.0-553.85.1.rt7.426.el8_10, kernel-rt-debug-4.18.0-553.85.1.rt7.426.el8_10 +7
  • RHSA-2025:21917 Released 2025-11-24 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.85.1.el8_10, kernel-4.18.0-553.85.1.el8_10, kernel-abi-stablelists-4.18.0-553.85.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.85.1.el8_10
  • RHSA-2025:21760 Released 2025-11-19 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.100.1.el9_4, libperf-5.14.0-427.100.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.100.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.100.1.el9_4, kernel-64k-devel-5.14.0-427.100.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.100.1.el9_4, kernel-5.14.0-427.100.1.el9_4, kernel-64k-5.14.0-427.100.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.100.1.el9_4, kernel-rt-core-5.14.0-427.100.1.el9_4, kernel-rt-debug-5.14.0-427.100.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.100.1.el9_4, kernel-rt-core-5.14.0-427.100.1.el9_4, kernel-rt-debug-5.14.0-427.100.1.el9_4 +11
  • 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
  • RHSA-2025:21136 Released 2025-11-12 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-core-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-5.14.0-70.153.1.rt21.225.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-core-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-5.14.0-70.153.1.rt21.225.el9_0 +7
  • RHSA-2025:21128 Released 2025-11-12 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-core-5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-debug-5.14.0-284.146.1.rt14.431.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-core-5.14.0-284.146.1.rt14.431.el9_2, kernel-rt-debug-5.14.0-284.146.1.rt14.431.el9_2 +11
  • RHSA-2025:21118 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.9.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.9.1.el10_1, kernel-64k-devel-6.12.0-124.9.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.9.1.el10_1, kernel-64k-6.12.0-124.9.1.el10_1, kernel-64k-core-6.12.0-124.9.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.9.1.el10_1, libperf-6.12.0-124.9.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.9.1.el10_1, kernel-rt-64k-6.12.0-124.9.1.el10_1, kernel-rt-64k-core-6.12.0-124.9.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.9.1.el10_1, kernel-rt-core-6.12.0-124.9.1.el10_1, kernel-rt-debug-6.12.0-124.9.1.el10_1 +9
  • RHSA-2025:21091 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.153.1.el9_0, kernel-debug-devel-matched-5.14.0-70.153.1.el9_0, kernel-devel-5.14.0-70.153.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.153.1.el9_0, kernel-5.14.0-70.153.1.el9_0, kernel-abi-stablelists-5.14.0-70.153.1.el9_0 +14
  • RHSA-2025:21051 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.146.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.146.1.el9_2, kernel-64k-devel-5.14.0-284.146.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.146.1.el9_2, kernel-5.14.0-284.146.1.el9_2, kernel-64k-5.14.0-284.146.1.el9_2 +29
  • RHSA-2025:19106 Released 2025-10-27 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.41.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.41.1.el10_0, kernel-64k-devel-6.12.0-55.41.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.41.1.el10_0, kernel-64k-6.12.0-55.41.1.el10_0, kernel-64k-core-6.12.0-55.41.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.41.1.el10_0, libperf-6.12.0-55.41.1.el10_0
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.41.1.el10_0, kernel-rt-64k-6.12.0-55.41.1.el10_0, kernel-rt-64k-core-6.12.0-55.41.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.41.1.el10_0, kernel-rt-core-6.12.0-55.41.1.el10_0, kernel-rt-debug-6.12.0-55.41.1.el10_0 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:0804
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:19106, RHSA-2025:21118
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:21091
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:21051
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:0804
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:19106, RHSA-2025:21118
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2025:21917
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2025:23445
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2025:22752
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2025:22006
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2025:22006
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2025:22998
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2025:21091
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2025:21051
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:0804
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2025:22752
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2025:22006
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2025:22998
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2025:21917
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:19106, RHSA-2025:21118
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2025:21920
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2025:21136
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2025:21920
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:19106, RHSA-2025:21118
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2025:21136
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2025:21128
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:0804
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:19106, RHSA-2025:21118
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:21469
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2025:21128
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:0804
Not affected: 1 product
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-39697
  2. 2026-10-03 Alias added: GHSA-3fr6-pgc4-qmrv

References

Patch 7

Advisory 2

  • 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