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TI-2025-25262 Aliases CVE-2025-37915GHSA-j8pj-vhjm-p7g6

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

Priority LOW 35CWE-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
Partial Red Hat: 3 without a fix

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: drr: 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 drr, 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 adding to the list to cover 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 0.00225 13th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.294, 5.10.238, 5.15.182 +5Red 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
LinuxLinux5.0 and later5.4.294, 5.10.238, 5.15.182, 6.1.138, 6.6.90, 6.12.28, 6.14.6, 6.15Patch availableCNA
  • Linux VendorLinux Affected 5.0 and later Fixed in 5.4.294, 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 · 12

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.0.1 to before 5.4.294; 5.5 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:5.0:-:*:*:*:*:*:*5.0VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.0:rc3:*:*:*:*:*:*5.0 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.0:rc4:*:*:*:*:*:*5.0 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.0:rc5:*:*:*:*:*:*5.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.0:rc6:*:*:*:*:*:*5.0 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.0:rc7:*:*:*:*:*:*5.0 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.0:rc8:*:*:*:*:*:*5.0 rc8VulnerableLinux
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:*:*:*:*:*:*:*:* Versions 5.0.1 to before 5.4.294; 5.5 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:5.0:-:*:*:*:*:*:* Versions 5.0 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.0:rc3:*:*:*:*:*:* Versions 5.0 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.0:rc4:*:*:*:*:*:* Versions 5.0 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.0:rc5:*:*:*:*:*:* Versions 5.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.0:rc6:*:*:*:*:*:* Versions 5.0 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.0:rc7:*:*:*:*:*:* Versions 5.0 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.0:rc8:*:*:*:*:*:* Versions 5.0 rc8 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
Show 2 more CPE
CPEVersionsRoleVendor
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: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

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.4.294, 5.10.238, 5.15.182, 6.1.138, 6.6.90, 6.12.28, 6.14.6, 6.15

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 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Not affected: 2 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-37915
  2. 2026-10-03 Alias added: GHSA-j8pj-vhjm-p7g6
  3. 2026-10-16 CISA SSVC decision points changed

References

Patch 8

  • 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