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TI-2025-25448 Aliases CVE-2025-38107GHSA-6fmq-5w8g-7pm6

net_sched: ets: fix a race in ets_qdisc_change()

Priority LOW 35CWE-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: 3 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: net_sched: ets: fix a race in ets_qdisc_change() Gerrard Tai reported a race condition in ETS, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00156 4th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.239, 5.15.186, 5.5 +6Red Hat: 3 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
LinuxLinux5.10.142 to before 5.10.239; 5.15.66 to before 5.15.186; 5.4.213 to before 5.5; 5.19.8 to before 5.205.10.239, 5.15.186, 5.5, 5.20Patch availableCNA
LinuxLinux6.0 and later5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3, 6.16Patch availableCNA
  • Linux VendorLinux Affected 5.10.142 to before 5.10.239; 5.15.66 to before 5.15.186; 5.4.213 to before 5.5; 5.19.8 to before 5.20 Fixed in 5.10.239, 5.15.186, 5.5, 5.20 Patch available CNA
  • Linux VendorLinux Affected 6.0 and later Fixed in 5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3, 6.16 Patch available CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.4.213 to before 5.5; 5.10.142 to before 5.10.239; 5.15.66 to before 5.15.186; 5.19.8 to before 6.0; 6.0.1 to before 6.1.142; 6.2 to before 6.6.94; 6.7 to before 6.12.34; 6.13 to before 6.15.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*6.0VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:*6.0 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*6.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*6.0 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:*6.0 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*6.16 rc1VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.4.213 to before 5.5; 5.10.142 to before 5.10.239; 5.15.66 to before 5.15.186; 5.19.8 to before 6.0; 6.0.1 to before 6.1.142; 6.2 to before 6.6.94; 6.7 to before 6.12.34; 6.13 to before 6.15.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:* Versions 6.0 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* Versions 6.0 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:* Versions 6.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:* Versions 6.0 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:* Versions 6.0 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* Versions 6.16 rc1 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.239, 5.15.186, 5.5, 5.20
  • Fix · CNA Linux (Linux) Fixed in 5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3, 6.16

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-38107
  2. 2026-10-03 Alias added: GHSA-6fmq-5w8g-7pm6
  3. 2026-10-16 CISA SSVC decision points changed

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