CVE-2026-64108
cifs: Fix busy dentry used after unmounting
02 Description
cifs: Fix busy dentry used after unmounting
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
- 0.12% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 2.2% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (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:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-08-12.
- 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
- 2026-08-05 12:39Z2 MO AGO
- Reserved
- 2026-07-19
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-911Improper Update of Reference CountBase
- Data version
- 5.2
- Document digest
- 7267f3492093207b2ea17f11bac75acf8e4d7a05dd11a625548e872d394f2a68
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/c7364cea52531534676b9f7dbc0a477c11f4c050
- git.kernel.orghttps://git.kernel.org/stable/c/bdc349a87f1fb02c18c4071858a06542bfea783d
- git.kernel.orghttps://git.kernel.org/stable/c/f2deaa2f409a4598eaa10f2a93a676c0632af248
- git.kernel.orghttps://git.kernel.org/stable/c/5e7d9d0805e58fa3760894e73115b7a74024fd07
- git.kernel.orghttps://git.kernel.org/stable/c/e1ffa6cf662383f95816eed1b623429d82675e75
- git.kernel.orghttps://git.kernel.org/stable/c/c68337442f03953237a94577beb468ab2662a851
07 Fixed in
Debian 12
- linux Fixed in 6.1.176-1
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-aws-6.8 Fixed in 6.8.0-1064.67~22.04.1
- linux-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-6.5 No fix yet
- linux-azure-6.8 Fixed in 6.8.0-1067.75~22.04.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-azure-fde-6.8 Fixed in 6.8.0-1065.72~22.04.1
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 No fix yet
- linux-gcp-6.5 No fix yet
- linux-gcp-6.8 Fixed in 6.8.0-1067.75~22.04.1
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 No fix yet
- linux-hwe-6.8 No fix yet
- linux-ibm-6.8 Fixed in 6.8.0-1066.67~22.04.1
- 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-lowlatency-hwe-6.8 Fixed in 6.8.0-139.139.1~22.04.1
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
- linux-nvidia-6.8 Fixed in 6.8.0-1062.65~22.04.1
- 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-oracle-6.8 Fixed in 6.8.0-1061.64~22.04.1
- 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-riscv-6.8 Fixed in 6.8.0-139.139~22.04.1
3 further packages in Ubuntu 22.04 LTS not shown (first 40 listed).
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux Fixed in 6.8.0-139.139
- linux-aws Fixed in 6.8.0-1064.67
- linux-aws-6.14 No fix yet
- linux-aws-6.17 No fix yet
- linux-azure Fixed in 6.8.0-1067.75
- 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 Fixed in 6.8.0-1065.72
- linux-azure-fde-6.14 No fix yet
- linux-azure-fde-6.17 No fix yet
- linux-azure-fde-7.0 Fixed in 7.0.0-1013.13~24.04.1
- linux-azure-nvidia-6.14 No fix yet
- linux-gcp Fixed in 6.8.0-1067.75
- 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-gke Fixed in 6.8.0-1062.70
- linux-gkeop Fixed in 6.8.0-1049.53
- linux-hwe-6.11 No fix yet
- linux-hwe-6.14 No fix yet
- linux-hwe-7.0 Fixed in 7.0.0-28.28~24.04.1
- linux-ibm Fixed in 6.8.0-1064.65
- linux-lowlatency Fixed in 6.8.0-139.139.1
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia Fixed in 6.8.0-1062.65
- linux-nvidia-6.11 No fix yet
- linux-nvidia-7.0 Fixed in 7.0.0-1016.16~24.04.1
- linux-nvidia-lowlatency Fixed in 6.8.0-1062.65.1
- linux-nvidia-tegra Fixed in 6.8.0-1035.38
- linux-oem-6.11 No fix yet
- linux-oem-6.14 No fix yet
- linux-oem-6.8 No fix yet
- linux-oracle Fixed in 6.8.0-1061.64
- linux-oracle-6.14 No fix yet
- linux-oracle-7.0 Fixed in 7.0.0-1011.11~24.04.1
- linux-raspi Fixed in 6.8.0-1064.68
- linux-raspi-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
4 further packages in Ubuntu 24.04 LTS not shown (first 40 listed).
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-azure Fixed in 7.0.0-1010.10
- linux-azure-fde 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 Nvidia-BlueField 24.04 LTS
- linux-bluefield Fixed in 6.8.0-1030.35
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 24.04 LTS
- linux-aws-fips Fixed in 6.8.0-1064.67+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 6.8.0-1067.75+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 6.8.0-139.139+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 6.8.0-1067.75+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 22.04 LTS
- linux-realtime-6.8 Fixed in 6.8.1-1059.60~22.04.1Available with Ubuntu Pro: https://ubuntu.com/pro
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-raspi-realtime Fixed in 6.8.0-2053.55Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 6.8.1-1059.60Available with Ubuntu Pro: https://ubuntu.com/pro
- 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.