synced 3 MIN AGO
01 Record

CVE-2026-72381

ksmbd: fix use-after-free of fp->owner.name in durable handle owner check

CriticalPUBLISHEDCNA: Linux
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

ksmbd: fix use-after-free of fp->owner.name in durable handle owner check

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.65% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.6% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Received. NVD last modified this record on 2026-08-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-15 05:56Z2 MO AGO
Last updated
2026-08-17 05:43Z2 MO AGO
Reserved
2026-08-09
Assigning CNA
Linux
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
No CWE assigned
Data version
5.2
Document digest
e800cbc92a3983ac2d0aff2a638eded753f587a104415ba9f4547888c5daa9a9

05 Affected products

VendorProductVersionsPlatforms
LinuxLinux712cdf917e77a6444ce3836874829d770db20ee6 to < fb978d72052704c6b06c6b0f129fcd60b77169f5, c7f0f0d01c88bdcb8b1694d7d321670013f7ed7d to < 93d4d46bf9d442a12ea87278049ec416962c627f, 00ce8d6789dae72d042a4522264964c72891ca37 to < 5a5ac2852cd326529d02f778bc1aa6184701f4d7, 49110a8ce654bbe56bef7c5e44cce31f4b102b8a to < ed98719be41389d416953b8ef9f07a07dfea6b2b, 49110a8ce654bbe56bef7c5e44cce31f4b102b8a to < 38637163501fd9e2f684b8cd275d0db5d79f37c6, c908c853f304a4969b5aa10eba0b50350cc65b80, 6.6.142 to < 6.6.145, 6.12.92 to < 6.12.97, 6.18.25 to < 6.18.40, 7.0.2 to < 7.1, 7.1—

06 References

07 Fixed in

Debian 13

  • linux
    Fixed in 6.12.100-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 7.1.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux-hwe-edge
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux-aws-5.0
    No fix yet
  • linux-aws-5.3
    No fix yet
  • linux-azure
    No fix yet
  • linux-azure-5.3
    No fix yet
  • linux-azure-edge
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-5.3
    No fix yet
  • linux-gke-4.15
    No fix yet
  • linux-gke-5.4
    No fix yet
  • linux-gkeop-5.4
    No fix yet
  • linux-hwe
    No fix yet
  • linux-hwe-edge
    No fix yet
  • linux-oem
    No fix yet
  • linux-oracle-5.0
    No fix yet
  • linux-oracle-5.3
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • linux-aws-5.11
    No fix yet
  • linux-aws-5.13
    No fix yet
  • linux-aws-5.8
    No fix yet
  • linux-azure-5.11
    No fix yet
  • linux-azure-5.13
    No fix yet
  • linux-azure-5.8
    No fix yet
  • linux-azure-fde
    No fix yet
  • linux-gcp-5.11
    No fix yet
  • linux-gcp-5.13
    No fix yet
  • linux-gcp-5.8
    No fix yet
  • linux-gke
    No fix yet
  • linux-gke-5.15
    No fix yet
  • linux-gkeop
    No fix yet
  • linux-gkeop-5.15
    No fix yet
  • linux-hwe-5.11
    No fix yet
  • linux-hwe-5.13
    No fix yet
  • linux-hwe-5.8
    No fix yet
  • linux-intel-5.13
    No fix yet
  • linux-oem-5.10
    No fix yet
  • linux-oem-5.13
    No fix yet
  • linux-oem-5.14
    No fix yet
  • linux-oem-5.6
    No fix yet
  • linux-oracle-5.11
    No fix yet
  • linux-oracle-5.13
    No fix yet
  • linux-oracle-5.8
    No fix yet
  • linux-raspi2
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.11
    No fix yet
  • linux-riscv-5.8
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • linux-allwinner-5.19
    No fix yet
  • linux-aws-5.19
    No fix yet
  • linux-aws-6.2
    No fix yet
  • linux-aws-6.5
    No fix yet
  • linux-azure-5.19
    No fix yet
  • linux-azure-6.2
    No fix yet
  • linux-azure-6.5
    No fix yet
  • linux-azure-fde-5.19
    No fix yet
  • linux-azure-fde-6.2
    No fix yet
  • linux-gcp-5.19
    No fix yet
  • linux-gcp-6.2
    No fix yet
  • linux-gcp-6.5
    No fix yet
  • linux-hwe-5.19
    No fix yet
  • linux-hwe-6.2
    No fix yet
  • linux-hwe-6.5
    No fix yet
  • linux-intel-iot-realtime
    No fix yet
  • linux-lowlatency-hwe-5.19
    No fix yet
  • linux-lowlatency-hwe-6.2
    No fix yet
  • linux-lowlatency-hwe-6.5
    No fix yet
  • linux-nvidia-6.2
    No fix yet
  • linux-nvidia-6.5
    No fix yet
  • linux-oem-5.17
    No fix yet
  • linux-oem-6.0
    No fix yet
  • linux-oem-6.1
    No fix yet
  • linux-oem-6.5
    No fix yet
  • linux-oracle-6.5
    No fix yet
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.19
    No fix yet
  • linux-riscv-6.5
    No fix yet
  • linux-starfive-5.19
    No fix yet
  • linux-starfive-6.2
    No fix yet
  • linux-starfive-6.5
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • linux-aws-6.14
    No fix yet
  • linux-aws-6.17
    No fix yet
  • linux-aws-7.0
    Fixed in 7.0.0-1013.13~24.04.1
  • linux-azure-6.11
    No fix yet
  • linux-azure-6.14
    No fix yet
  • linux-azure-6.17
    No fix yet
  • linux-azure-7.0
    Fixed in 7.0.0-1017.17~24.04.1
  • linux-azure-fde-6.14
    No fix yet
  • linux-azure-fde-6.17
    No fix yet
  • linux-azure-fde-7.0
    Fixed in 7.0.0-1016.16~24.04.1
  • linux-azure-nvidia-6.14
    No fix yet
  • linux-gcp-6.11
    No fix yet
  • linux-gcp-6.14
    No fix yet
  • linux-gcp-7.0
    Fixed in 7.0.0-1013.13~24.04.1
  • linux-hwe-6.11
    No fix yet
  • linux-hwe-6.14
    No fix yet
  • linux-hwe-7.0
    Fixed in 7.0.0-34.34~24.04.1
  • linux-lowlatency-hwe-6.11
    No fix yet
  • linux-nvidia-6.11
    No fix yet
  • linux-nvidia-7.0
    No fix yet
  • linux-oem-6.11
    No fix yet
  • linux-oem-6.14
    No fix yet
  • linux-oem-6.8
    No fix yet
  • linux-oracle-6.14
    No fix yet
  • linux-oracle-7.0
    Fixed in 7.0.0-1012.12~24.04.1
  • linux-raspi-realtime
    No fix yet
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-6.14
    No fix yet
  • linux-riscv-6.17
    No fix yet
  • linux-riscv-7.0
    Fixed in 7.0.0-34.34.1~24.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • linux
    Fixed in 7.0.0-34.34
  • linux-aws
    Fixed in 7.0.0-1013.13
  • linux-azure
    Fixed in 7.0.0-1017.17
  • linux-azure-fde
    Fixed in 7.0.0-1016.16
  • linux-gcp
    Fixed in 7.0.0-1013.13
  • linux-gke
    Fixed in 7.0.0-1007.8
  • linux-ibm
    Fixed in 7.0.0-1014.14
  • linux-nvidia
    No fix yet
  • linux-nvidia-bos
    No fix yet
  • linux-oem-7.0
    Fixed in 7.0.0-1014.14
  • linux-oracle
    Fixed in 7.0.0-1012.12
  • linux-raspi
    Fixed in 7.0.0-1020.20
  • linux-realtime
    Fixed in 7.0.0-34.34.1
  • linux-riscv
    Fixed in 7.0.0-34.34.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro Realtime 24.04 LTS

  • linux-realtime-6.14
    No fix yet
  • linux-realtime-6.17
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.