Description
In the Linux kernel, the following vulnerability has been resolved:
CDC-NCM: avoid overflow in sanity checking
A broken device may give an extreme offset like 0xFFF0
and a reasonable length for a fragment. In the sanity
check as formulated now, this will create an integer
overflow, defeating the sanity check. Both offset
and offset + len need to be checked in such a manner
that no overflow can occur.
And those quantities should be unsigned.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.19.285 – < 4.19.323, 5.4.245 – < 5.4.285, 4.14.317 – < 4.15, 5.7 | 4.19.323 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.16.12-1 | — |
| Debian 13 | linux | 5.16.12-1 | — |
| Debian 12 | linux | 5.16.12-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-202.222 | USN-7159-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1136.146 | USN-7159-2 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1142.149 | USN-7195-1 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1096.103 | USN-7159-3 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1140.149 | USN-7159-1 |
| Ubuntu 20.04 LTS | linux-gke +27 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1083.88 | USN-7159-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1008.11~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1045.46 | USN-7159-4 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1124.132 | USN-7159-1 |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1135.144 | USN-7159-3 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1120.132 | USN-7159-1 |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1055.59 | USN-7159-1 |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1136.146+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1142.149+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1110.120 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1140.149+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2113.119 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2092.98 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1129.140 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2076.81 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1107.114 | — |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-231.243 | USN-7121-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1175.188 | USN-7121-1 |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1136.146~18.04.1 | USN-7159-2 |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | 4.15.0-1183.198 | USN-7121-1 |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1142.149~18.04.1 | USN-7195-2 |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | 4.15.0-1168.185 | USN-7121-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1140.149~18.04.1 | USN-7159-1 |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-202.222~18.04.1 | USN-7159-1 |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1083.88~18.04.1 | USN-7159-1 |
| Ubuntu Pro 18.04 LTS | linux-kvm | 4.15.0-1158.163 | USN-7121-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle | 4.15.0-1137.148 | USN-7121-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1135.144~18.04.1 | USN-7159-3 |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1120.132~18.04.1 | USN-7159-5 |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-261.295 | USN-7148-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1176.191 | USN-7148-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1175.188~16.04.1 | USN-7121-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1183.198~16.04.1 | USN-7121-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1168.185~16.04.1 | USN-7121-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-231.243~16.04.1 | USN-7121-1 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1139.149 | USN-7148-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1137.148~16.04.1 | USN-7121-3 |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1138.144 | USN-7148-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1183.198~14.04.1 | USN-7121-2 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-261.295~14.04.1 | USN-7148-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +4 | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.66.1 | SUSE-SU-2024:3190-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| SLES 15 SP5 | kernel-syms +1 | 5.14.21-150500.55.80.1 | SUSE-SU-2024:3483-1 |
| SLES 15 SP4 | kernel-64kb +4 | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SLES 15 SP4 | kernel-docs +1 | 5.14.21-150400.24.133.1 | SUSE-SU-2024:3408-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.197.1 | SUSE-SU-2024:3252-1 |
| SLES 12 SP5 | kernel-docs +1 | 4.12.14-122.228.2 | SUSE-SU-2024:3251-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.228.1 | SUSE-SU-2024:3251-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SLES for SAP 15 SP4 | kernel-docs +1 | 5.14.21-150400.24.133.1 | SUSE-SU-2024:3408-1 |
| SLES for SAP 15 SP4 | kernel-source +2 | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.197.1 | SUSE-SU-2024:3252-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.228.1 | SUSE-SU-2024:3251-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.200.1 | SUSE-SU-2024:3189-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.67.3 | SUSE-SU-2024:3209-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.91.3 | SUSE-SU-2024:3227-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.91.3 | SUSE-SU-2024:3227-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_19 +1 | 1-150500.11.3.2 | SUSE-SU-2024:3483-1, SUSE-SU-2024:3209-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_31 | 1-150400.9.3.2 | SUSE-SU-2024:3408-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.228.1 | SUSE-SU-2024:3251-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_60 | 1-8.3.1 | SUSE-SU-2024:3251-1 |
| SLE HPC 15 SP4 | kernel-64kb +3 | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SLE HPC 15 SP4 | kernel-docs +1 | 5.14.21-150400.24.133.1 | SUSE-SU-2024:3408-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +2 | 5.14.21-150500.13.67.3 | SUSE-SU-2024:3209-1 |
| SUSE Real Time Module 15 SP5 | kernel-syms-rt | 5.14.21-150500.13.67.1 | SUSE-SU-2024:3209-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SUSE Manager Server 4.3 | kernel-source +2 | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SUSE Manager Server 4.3 | kernel-syms | 5.14.21-150400.24.133.1 | SUSE-SU-2024:3408-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.133.2.150400.24.64.5 | SUSE-SU-2024:3408-1 |
| SUSE Manager Proxy 4.3 | kernel-source +1 | 5.14.21-150400.24.133.2 | SUSE-SU-2024:3408-1 |
| SUSE Manager Proxy 4.3 | kernel-syms | 5.14.21-150400.24.133.1 | SUSE-SU-2024:3408-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +3 | 5.14.21-150500.55.80.1 | SUSE-SU-2024:3483-1 |
| openSUSE Leap 15.5 | kernel-64kb +6 | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.66.1 | SUSE-SU-2024:3190-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| openSUSE Leap 15.5 | kernel-rt +2 | 5.14.21-150500.13.67.3 | SUSE-SU-2024:3209-1 |
| openSUSE Leap 15.5 | kernel-syms-rt | 5.14.21-150500.13.67.1 | SUSE-SU-2024:3209-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-default | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| openSUSE Leap Micro 5.5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| openSUSE Leap Micro 5.5 | kernel-rt | 5.14.21-150500.13.67.3 | SUSE-SU-2024:3209-1 |
Advisories 20
- USN-7195-2 linux-azure-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7159-3 linux-bluefield, linux-oracle, linux-oracle-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7121-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7159-1 linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-raspi, linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7148-1 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7159-4 linux-iot vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7159-5 linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7121-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7195-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7121-3 linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7159-2 linux-aws, linux-aws-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- SUSE-SU-2024:3227-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3408-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3483-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3189-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3209-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3252-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3190-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3251-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1898 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Aug 6, 2025
References
- https://git.kernel.org/stable/c/a612395c7631918e0e10ea48b9ce5ab4340f26a6
- https://git.kernel.org/stable/c/9957fbf34f52a4d8945d1bf39aae400ef9a11246
- https://git.kernel.org/stable/c/69560efa001397ebb8dc1c3e6a3ce00302bb9f7f
- https://git.kernel.org/stable/c/49909c9f8458cacb5b241106cba65aba5a6d8f4c
- https://git.kernel.org/stable/c/7b737e47b87589031f0d4657f6d7b0b770474925
- https://git.kernel.org/stable/c/8d2b1a1ec9f559d30b724877da4ce592edc41fdc