01 Record
CVE-2026-31539
smb: smbdirect: introduce smbdirect_socket.recv_io.credits.available
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
smb: smbdirect: introduce smbdirect_socket.recv_io.credits.available
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.32% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 25.8% 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
- Modified. NVD last modified this record on 2026-10-19.
- 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
- 2026-04-24 14:30Z6 MO AGO
- Last updated
- 2026-10-19 18:55Z9 DAYS AGO
- Reserved
- 2026-03-09
- 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
- Data version
- 5.2
- Document digest
- f7c1099403c9114e7fb79d45ea1d812eafcd22752170eea312609685f48b4d71
05 Affected products
VendorProductVersionsPlatforms
LinuxLinux5fb9b459b3686e366640edd4e62805ef7b4de927 to < e811e60e1cc79923c4388146eb1fa26a7482731e, 5fb9b459b3686e366640edd4e62805ef7b4de927 to < f99996870222b598914a1f49d7375dc23752c237, 5fb9b459b3686e366640edd4e62805ef7b4de927 to < 6e3c5052f9686192e178806e017b7377155f4bab, 6.18—
06 References
07 Fixed in
AlmaLinux 9
- kernel Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-abi-stablelists Fixed in 5.14.0-687.52.1.el9_8
- kernel-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-cross-headers Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-uki-virt Fixed in 5.14.0-687.52.1.el9_8
- kernel-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-doc Fixed in 5.14.0-687.52.1.el9_8
- kernel-headers Fixed in 5.14.0-687.52.1.el9_8
- kernel-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug-modules Fixed in 5.14.0-687.52.1.el9_8
34 further packages in AlmaLinux 9 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.
AlmaLinux 10
- kernel Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-abi-stablelists Fixed in 6.12.0-211.55.1.el10_2
- kernel-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-cross-headers Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-uki-virt Fixed in 6.12.0-211.55.1.el10_2
- kernel-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-doc Fixed in 6.12.0-211.55.1.el10_2
- kernel-headers Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules-extra-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-debug Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-debug-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-debug-devel Fixed in 6.12.0-211.55.1.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 9
- kernel Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-debug-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-64k-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-abi-stablelists Fixed in 5.14.0-687.52.1.el9_8
- kernel-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-cross-headers Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-debug-uki-virt Fixed in 5.14.0-687.52.1.el9_8
- kernel-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-devel-matched Fixed in 5.14.0-687.52.1.el9_8
- kernel-doc Fixed in 5.14.0-687.52.1.el9_8
- kernel-headers Fixed in 5.14.0-687.52.1.el9_8
- kernel-modules Fixed in 5.14.0-687.52.1.el9_8
- kernel-modules-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-modules-extra Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug-core Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug-devel Fixed in 5.14.0-687.52.1.el9_8
- kernel-rt-64k-debug-modules Fixed in 5.14.0-687.52.1.el9_8
34 further packages in CloudLinux 9 not shown (first 40 listed).
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 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.
CloudLinux 10
- kernel Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-debug-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-64k-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-abi-stablelists Fixed in 6.12.0-211.55.1.el10_2
- kernel-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-cross-headers Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-debug-uki-virt Fixed in 6.12.0-211.55.1.el10_2
- kernel-devel Fixed in 6.12.0-211.55.1.el10_2
- kernel-devel-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-doc Fixed in 6.12.0-211.55.1.el10_2
- kernel-headers Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules-extra Fixed in 6.12.0-211.55.1.el10_2
- kernel-modules-extra-matched Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-debug Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-debug-core Fixed in 6.12.0-211.55.1.el10_2
- kernel-rt-64k-debug-devel Fixed in 6.12.0-211.55.1.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 6.18.12-1
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-azure-6.11 No fix yet
- linux-gcp-6.11 No fix yet
- linux-gcp-6.14 No fix yet
- 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-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-raspi-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-6.14 No fix yet
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.