01 Record
CVE-2026-53026
NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg
HighPUBLISHEDCNA: Linux
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
02 Description
NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg
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
- 0.42% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 36.5% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (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:N/I:N/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-07-15.
- 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
- 2026-06-24 16:29Z4 MO AGO
- Last updated
- 2026-08-05 12:32Z2 MO AGO
- Reserved
- 2026-06-09
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-911Improper Update of Reference CountBase
- Data version
- 5.2
- Document digest
- 557dc2e3a0c343cb76e70e17dc386cb7b9e4a7aa35c62f0cf63fa679316db061
05 Affected products
VendorProductVersionsPlatforms
LinuxLinuxc07dc84ed67c5a182273171639bacbbb87c12175 to < 4584229395d0d65bd517780afe97ffea07cb2c3d, 8072e34e1387d03102b788677d491e2bcceef6f5 to < b81572b073441dfd32213e41857676d0dbff4665, 8072e34e1387d03102b788677d491e2bcceef6f5 to < b48f44f36e6607b2f818560f19deb86b4a9c717b, 6.18.4 to < 6.18.33, 6.19—
06 References
07 Fixed in
AlmaLinux 10
- kernel Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-abi-stablelists Fixed in 6.12.0-211.50.1.el10_2
- kernel-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-cross-headers Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-uki-virt Fixed in 6.12.0-211.50.1.el10_2
- kernel-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-doc Fixed in 6.12.0-211.50.1.el10_2
- kernel-headers Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules-extra-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-debug Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-debug-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-debug-devel Fixed in 6.12.0-211.50.1.el10_2
35 further packages in AlmaLinux 10 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 10
- kernel Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-debug-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-64k-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-abi-stablelists Fixed in 6.12.0-211.50.1.el10_2
- kernel-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-cross-headers Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-debug-uki-virt Fixed in 6.12.0-211.50.1.el10_2
- kernel-devel Fixed in 6.12.0-211.50.1.el10_2
- kernel-devel-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-doc Fixed in 6.12.0-211.50.1.el10_2
- kernel-headers Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules-extra Fixed in 6.12.0-211.50.1.el10_2
- kernel-modules-extra-matched Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-debug Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-debug-core Fixed in 6.12.0-211.50.1.el10_2
- kernel-rt-64k-debug-devel Fixed in 6.12.0-211.50.1.el10_2
35 further packages in CloudLinux 10 not shown (first 40 listed).
Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 7.0.10-1
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-6.17 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-6.17 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-hwe-6.17 No fix yet
- linux-hwe-7.0 Fixed in 7.0.0-28.28~24.04.1
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia-6.11 No fix yet
- linux-nvidia-6.17 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-6.17 No fix yet
- linux-oem-6.8 No fix yet
- linux-oracle-6.14 No fix yet
- linux-oracle-6.17 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 25.10
- linux No fix yet
- linux-aws No fix yet
- linux-azure No fix yet
- linux-azure-fde No fix yet
- linux-gcp No fix yet
- linux-oracle No fix yet
- linux-raspi No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
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 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.