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TI-2025-25261 Aliases CVE-2025-37914GHSA-x88q-4f25-f826

net_sched: ets: Fix double list add in class with netem as child qdisc

Priority LOW 36CWE-415Published · 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
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-415 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: Fix double list add in class with netem as child qdisc As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of ets, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. In addition to checking for qlen being zero, this patch checks whether the class was already added to the active_list (cl_is_active) before doing the addition to cater for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00232 14th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.238, 5.15.182, 6.1.138 +4Red Hat: 12 advisories

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
LinuxLinux5.6 and later5.10.238, 5.15.182, 6.1.138, 6.6.90, 6.12.28, 6.14.6, 6.15Patch availableCNA
  • Linux VendorLinux Affected 5.6 and later Fixed in 5.10.238, 5.15.182, 6.1.138, 6.6.90, 6.12.28, 6.14.6, 6.15 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.6 to before 5.10.238; 5.11 to before 5.15.182; 5.16 to before 6.1.138; 6.2 to before 6.6.90; 6.7 to before 6.12.28; 6.13 to before 6.14.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*6.15 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*6.15 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*6.15 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*6.15 rc4VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.6 to before 5.10.238; 5.11 to before 5.15.182; 5.16 to before 6.1.138; 6.2 to before 6.6.90; 6.7 to before 6.12.28; 6.13 to before 6.14.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* Versions 6.15 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* Versions 6.15 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* Versions 6.15 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* Versions 6.15 rc4 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.238, 5.15.182, 6.1.138, 6.6.90, 6.12.28, 6.14.6, 6.15

Red Hat 12 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-2025:18098 Released 2025-10-15 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-core-5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-debug-5.14.0-70.149.1.rt21.221.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-core-5.14.0-70.149.1.rt21.221.el9_0, kernel-rt-debug-5.14.0-70.149.1.rt21.221.el9_0 +7
  • RHSA-2025:18054 Released 2025-10-15 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.149.1.el9_0, kernel-debug-devel-matched-5.14.0-70.149.1.el9_0, kernel-devel-5.14.0-70.149.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.149.1.el9_0, kernel-5.14.0-70.149.1.el9_0, kernel-abi-stablelists-5.14.0-70.149.1.el9_0 +14
Show 9 more Red Hat advisories
  • RHSA-2025:18043 Released 2025-10-15 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.164.1.el8_6, kernel-4.18.0-372.164.1.el8_6, kernel-abi-stablelists-4.18.0-372.164.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.164.1.el8_6, kernel-4.18.0-372.164.1.el8_6, kernel-abi-stablelists-4.18.0-372.164.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.164.1.el8_6, kernel-4.18.0-372.164.1.el8_6, kernel-abi-stablelists-4.18.0-372.164.1.el8_6 +14
  • RHSA-2025:17734 Released 2025-10-13 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.142.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.142.1.el9_2, kernel-64k-devel-5.14.0-284.142.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.142.1.el9_2, kernel-5.14.0-284.142.1.el9_2, kernel-64k-5.14.0-284.142.1.el9_2 +29
  • RHSA-2025:17735 Released 2025-10-13 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.142.1.rt14.427.el9_2, kernel-rt-core-5.14.0-284.142.1.rt14.427.el9_2, kernel-rt-debug-5.14.0-284.142.1.rt14.427.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.142.1.rt14.427.el9_2, kernel-rt-core-5.14.0-284.142.1.rt14.427.el9_2, kernel-rt-debug-5.14.0-284.142.1.rt14.427.el9_2 +11
  • RHSA-2025:17570 Released 2025-10-08 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.114.1.el8_8, kernel-4.18.0-477.114.1.el8_8, kernel-abi-stablelists-4.18.0-477.114.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.114.1.el8_8, kernel-4.18.0-477.114.1.el8_8, kernel-abi-stablelists-4.18.0-477.114.1.el8_8 +14
  • RHSA-2025:15668 Released 2025-09-11 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.88.1.el9_4, libperf-5.14.0-427.88.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.88.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.88.1.el9_4, kernel-64k-devel-5.14.0-427.88.1.el9_4 +10
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.88.1.el9_4, kernel-5.14.0-427.88.1.el9_4, kernel-64k-5.14.0-427.88.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.88.1.el9_4, kernel-rt-core-5.14.0-427.88.1.el9_4, kernel-rt-debug-5.14.0-427.88.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.88.1.el9_4, kernel-rt-core-5.14.0-427.88.1.el9_4, kernel-rt-debug-5.14.0-427.88.1.el9_4 +11
  • RHSA-2025:14510 Released 2025-08-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.29.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.29.1.el10_0, kernel-64k-devel-6.12.0-55.29.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.29.1.el10_0, kernel-64k-6.12.0-55.29.1.el10_0, kernel-64k-core-6.12.0-55.29.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.29.1.el10_0, libperf-6.12.0-55.29.1.el10_0
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.29.1.el10_0, kernel-rt-64k-6.12.0-55.29.1.el10_0, kernel-rt-64k-core-6.12.0-55.29.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.29.1.el10_0, kernel-rt-core-6.12.0-55.29.1.el10_0, kernel-rt-debug-6.12.0-55.29.1.el10_0 +11
  • RHSA-2025:14420 Released 2025-08-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.37.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.37.1.el9_6, kernel-64k-devel-5.14.0-570.37.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.37.1.el9_6, kernel-64k-5.14.0-570.37.1.el9_6, kernel-64k-core-5.14.0-570.37.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.37.1.el9_6, libperf-5.14.0-570.37.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.37.1.el9_6, kernel-rt-64k-5.14.0-570.37.1.el9_6, kernel-rt-64k-core-5.14.0-570.37.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.37.1.el9_6, kernel-rt-core-5.14.0-570.37.1.el9_6, kernel-rt-debug-5.14.0-570.37.1.el9_6 +11
  • RHSA-2025:13960 Released 2025-08-18 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.70.1.el8_10, kernel-4.18.0-553.70.1.el8_10, kernel-abi-stablelists-4.18.0-553.70.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.70.1.el8_10
  • RHSA-2025:13961 Released 2025-08-18 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.70.1.rt7.411.el8_10, kernel-rt-core-4.18.0-553.70.1.rt7.411.el8_10, kernel-rt-debug-4.18.0-553.70.1.rt7.411.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.70.1.rt7.411.el8_10, kernel-rt-core-4.18.0-553.70.1.rt7.411.el8_10, kernel-rt-debug-4.18.0-553.70.1.rt7.411.el8_10 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:15668
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:14510
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:14420
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:18054
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:17734
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:15668
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:14510
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2025:13960
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:14420
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2025:22752
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2025:18043
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2025:18043
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2025:17570
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2025:18054
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2025:17734
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:15668
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-2025:18043
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2025:17570
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2025:13960
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:14510
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:14420
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2025:13961
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2025:18098
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2025:13961
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:14510
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:14420
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2025:18098
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2025:17735
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:15668
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:14510
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:14420
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2025:17735
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:15668
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux AppStream EUS (v.9.4)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-37914
  2. 2026-10-03 Alias added: GHSA-x88q-4f25-f826
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-29 Affected versions changed · Red Hat

References

Patch 7

  • 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

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