synced JUST NOW
01 Record

CVE-2026-64139

ksmbd: fix SID memory leak in set_posix_acl_entries_dacl() on overflow

UnratedPUBLISHEDCNA: Linux
CNA base scoreUnratedNo CNA CVSS vector

02 Description

ksmbd: fix SID memory leak in set_posix_acl_entries_dacl() on overflow

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
0.17% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 6.3% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-08-23.
Red Hat severity
Low. 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
2026-07-19 15:40Z3 MO AGO
Last updated
2026-08-23 12:45Z2 MO AGO
Reserved
2026-07-19
Assigning CNA
Linux
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-772Missing Release of Resource after Effective LifetimeBase
Data version
5.2
Document digest
83ab7281540dda1f4e087a33cfb2e46fee64d4b40659202194c69d126fea215f

05 Affected products

VendorProductVersionsPlatforms
LinuxLinux41e53a773db6342ac9a689ee5ba635c31744c9f0 to < 9b0a8985b419a71ee1cc9c0cc6a9e1bb7815a2c5, 8d5729350b236896f51379588d9a690b7fafb8db to < 9d378e17c864da08c3a4df41dae92cfa6468b00a, e1955a94b6f17f4b058afa955a6f187eb3ed7615 to < 519fb0a42ce5d7e46935577309fb282a5f2c6ea3, 5e7b8f3c539d69b2ed5f2408e2f75e68ce7eef43 to < 0e198f09cb2a554c04de0fea4e790f1250a943ca, ef7902be3f215b6bf7babe4dc9dd9a7d57dad7a7 to < eced48cb08f07393a5ea770fdd1026452883c3ad, 299f962c0b02d048fb45d248b4da493d03f3175d to < af92ee994cc7f7e83a41c2025f32257a2f82a7ef, 6.1.175 to < 6.1.184, 6.6.136 to < 6.6.142, 6.12.84 to < 6.12.92, 6.18.25 to < 6.18.34, 7.0.2 to < 7.0.11—

06 References

07 Fixed in

Debian 12

  • linux
    Fixed in 6.1.187-1

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

Debian 13

  • linux
    Fixed in 6.12.94-1

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

Debian 14

  • linux
    Fixed in 7.0.12-1

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-azure-6.11
    No fix yet
  • linux-azure-6.14
    No fix yet
  • linux-azure-7.0
    Fixed in 7.0.0-1014.14~24.04.1
  • linux-azure-fde-6.14
    No fix yet
  • linux-azure-fde-7.0
    Fixed in 7.0.0-1013.13~24.04.1
  • 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 7.0.0-1011.11~24.04.1
  • linux-hwe-6.11
    No fix yet
  • linux-hwe-6.14
    No fix yet
  • linux-lowlatency-hwe-6.11
    No fix yet
  • linux-nvidia-6.11
    No fix yet
  • linux-nvidia-7.0
    Fixed in 7.0.0-1016.16~24.04.1
  • 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 7.0.0-1011.11~24.04.1
  • 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 7.0.0-28.28.1~24.04.3

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 7.0.0-28.28
  • linux-aws
    Fixed in 7.0.0-1009.9
  • linux-gcp
    Fixed in 7.0.0-1008.8
  • linux-gke
    Fixed in 7.0.0-1003.4
  • linux-ibm
    Fixed in 7.0.0-1010.10
  • linux-nvidia
    Fixed in 7.0.0-1016.16
  • linux-nvidia-bos
    Fixed in 7.0.0-2016.16
  • linux-oem-7.0
    Fixed in 7.0.0-1009.9
  • linux-oracle
    Fixed in 7.0.0-1008.8
  • linux-raspi
    Fixed in 7.0.0-1015.15
  • linux-realtime
    Fixed in 7.0.0-28.28.1
  • linux-riscv
    Fixed in 7.0.0-28.28.1

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

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.