synced 7 MIN AGO
01 Record

CVE-2024-26638

nbd: always initialize struct msghdr completely

MediumPUBLISHEDCNA: Linux
CNA base score4.4 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

nbd: always initialize struct msghdr completely

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.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.22% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 12.6% of scored records. A rank, not a probability.
NVD base score
4.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
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
2024-03-18 10:14Z2 YR AGO
Last updated
2026-05-11 20:01Z5 MO AGO
Reserved
2024-02-19
Assigning CNA
Linux
Record state
PUBLISHED
Severity
Medium (CVSS 4.4)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-908Use of Uninitialized ResourceBase
  • CWE-456Missing Initialization of a VariableVariant
Data version
5.2
Document digest
a12762e7d4d5b305c2c0d35b3f255570c2884919f20196d05b2a3b92cf4fcc46

05 Affected products

VendorProductVersionsPlatforms
LinuxLinuxf94fd25cb0aaf77fd7453f31c5d394a1a68ecf60 to < d9c54763e5cdbbd3f81868597fe8aca3c96e6387, f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60 to < 1960f2b534da1e6c65fb96f9e98bda773495f406, f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60 to < b0028f333420a65a53a63978522db680b37379dd, f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60 to < 78fbb92af27d0982634116c7a31065f24d092826, 5.19—

06 References

07 Fixed in

AlmaLinux 8

  • bpftool
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-abi-stablelists
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-core
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-cross-headers
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-core
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-modules
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-modules-extra
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-doc
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-headers
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-modules
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-modules-extra
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-tools
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-tools-libs
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-tools-libs-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-core
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-553.22.1.el8_10
  • perf
    Fixed in 4.18.0-553.22.1.el8_10
  • python3-perf
    Fixed in 4.18.0-553.22.1.el8_10

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • bpftool
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-abi-stablelists
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-core
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-cross-headers
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-core
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-modules
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-debug-modules-extra
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-doc
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-headers
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-modules
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-modules-extra
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-tools
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-tools-libs
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-tools-libs-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-core
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-553.22.1.el8_10
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-553.22.1.el8_10
  • perf
    Fixed in 4.18.0-553.22.1.el8_10
  • python3-perf
    Fixed in 4.18.0-553.22.1.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 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 12

  • linux
    Fixed in 6.1.76-1

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

Debian 13

  • linux
    Fixed in 6.6.15-1

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

Debian 14

  • linux
    Fixed in 6.6.15-1

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-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-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
    Fixed in 6.5.0-1022.23~22.04.1
  • 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
    Fixed in 6.5.0-1022.24~22.04.1
  • linux-hwe-5.19
    No fix yet
  • linux-hwe-6.2
    No fix yet
  • linux-hwe-6.5
    Fixed in 6.5.0-41.41~22.04.2
  • 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
    Fixed in 6.5.0-41.41.1~22.04.1
  • linux-nvidia-6.2
    No fix yet
  • linux-nvidia-6.5
    Fixed in 6.5.0-1021.22
  • 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
    Fixed in 6.5.0-1024.25
  • linux-oracle-6.5
    Fixed in 6.5.0-1024.24~22.04.1
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.19
    No fix yet
  • linux-riscv-6.5
    Fixed in 6.5.0-40.40.1~22.04.1
  • linux-starfive-5.19
    No fix yet
  • linux-starfive-6.2
    No fix yet
  • linux-starfive-6.5
    Fixed in 6.5.0-1015.16~22.04.1

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-raspi-realtime
    Fixed in 6.8.0-2001.1
    Available 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.

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.