Unscored CVE-2026-23019 EUVD-2026-5075

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

Published Jan 31, 2026 · Updated Nov 10, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.17 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.17 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.14 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.17 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 Package: linux-hwe-6.17 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.17 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.14 Package: linux-oem-6.17 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.17 Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 Package: linux-riscv-6.17 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

devlink_alloc() may return NULL on allocation failure, but
prestera_devlink_alloc() unconditionally calls devlink_priv() on
the returned pointer.

This leads to a NULL pointer dereference if devlink allocation fails.
Add a check for a NULL devlink pointer and return NULL early to avoid
the crash.

Affected products

Vendor	Product	Affected	Fixed
Linux	Linux	5.10	5.15.198

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	6.18.8-1	—
Debian 13	linux	6.12.69-1	DSA-6126-1
Debian 12	linux	6.1.162-1	DSA-6127-1
Debian 11	linux-6.1	6.1.162-1~deb11u1	DLA-4476-1

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu Nvidia-BlueField 24.04 LTS	linux-bluefield	6.8.0-1022.26	—
Ubuntu Nvidia-BlueField 22.04 LTS	linux-bluefield	5.15.0-1086.88	—
Ubuntu 25.10	linux +8	No fix yet	—
Ubuntu 24.04 LTS	linux	6.8.0-117.117	USN-8278-1
Ubuntu 24.04 LTS	linux-aws	6.8.0-1055.58	USN-8278-1
Ubuntu 24.04 LTS	linux-azure	6.8.0-1056.62	USN-8278-2
Ubuntu 24.04 LTS	linux-azure-6.17	6.17.0-1021.21~24.04.1	USN-8604-1
Ubuntu 24.04 LTS	linux-azure-fde	6.8.0-1058.65	—
Ubuntu 24.04 LTS	linux-azure-fde-6.17	6.17.0-1018.18~24.04.1	USN-8605-1
Ubuntu 24.04 LTS	linux-azure-nvidia	6.8.0-1039.42	—
Ubuntu 24.04 LTS	linux-gcp	6.8.0-1058.61	USN-8278-1
Ubuntu 24.04 LTS	linux-gcp-6.17	6.17.0-1021.24~24.04.1	USN-8570-1
Ubuntu 24.04 LTS	linux-gke	6.8.0-1054.60	USN-8278-1
Ubuntu 24.04 LTS	linux-gkeop	6.8.0-1041.44	USN-8278-1
Ubuntu 24.04 LTS	linux-hwe-6.17	6.17.0-41.41~24.04.1	—
Ubuntu 24.04 LTS	linux-ibm	6.8.0-1055.56	USN-8278-1
Ubuntu 24.04 LTS	linux-lowlatency	6.8.0-117.117.1	USN-8278-1
Ubuntu 24.04 LTS	linux-nvidia	6.8.0-1054.57	USN-8289-1
Ubuntu 24.04 LTS	linux-nvidia-6.17	6.17.0-1031.31	USN-8669-1
Ubuntu 24.04 LTS	linux-nvidia-lowlatency	6.8.0-1054.57.1	USN-8289-1
Ubuntu 24.04 LTS	linux-nvidia-tegra	6.8.0-1024.24	USN-8296-2
Ubuntu 24.04 LTS	linux-oem-6.17	6.17.0-1030.30	USN-8594-1
Ubuntu 24.04 LTS	linux-oracle	6.8.0-1054.55	—
Ubuntu 24.04 LTS	linux-oracle-6.17	6.17.0-1019.19~24.04.3	USN-8570-2
Ubuntu 24.04 LTS	linux-raspi	6.8.0-1056.60	USN-8278-1
Ubuntu 24.04 LTS	linux-riscv +20	No fix yet	—
Ubuntu 24.04 LTS	linux-xilinx	6.8.0-1032.33	USN-8499-1
Ubuntu 22.04 LTS	linux +1	5.15.0-173.183	USN-8096-1
Ubuntu 22.04 LTS	linux-aws	5.15.0-1103.110	USN-8096-1
Ubuntu 22.04 LTS	linux-aws-6.8	6.8.0-1057.60~22.04.1	—
Ubuntu 22.04 LTS	linux-azure	5.15.0-1109.118	USN-8163-2
Ubuntu 22.04 LTS	linux-azure-6.8	6.8.0-1059.65~22.04.1	USN-8440-1
Ubuntu 22.04 LTS	linux-azure-fde	5.15.0-1109.118.1	—
Ubuntu 22.04 LTS	linux-azure-fde-6.8	6.8.0-1058.65~22.04.1	—
Ubuntu 22.04 LTS	linux-gcp	5.15.0-1103.112	USN-8096-1
Ubuntu 22.04 LTS	linux-gcp-6.8	6.8.0-1060.63~22.04.1	—
Ubuntu 22.04 LTS	linux-gke	5.15.0-1099.105	USN-8096-3
Ubuntu 22.04 LTS	linux-gkeop	5.15.0-1086.94	USN-8096-1
Ubuntu 22.04 LTS	linux-hwe-6.8	6.8.0-124.124~22.04.1	—
Ubuntu 22.04 LTS	linux-ibm +1	5.15.0-1097.100	USN-8141-1, USN-8096-1
Ubuntu 22.04 LTS	linux-ibm-6.8	6.8.0-1055.56~22.04.1	USN-8278-1
Ubuntu 22.04 LTS	linux-intel-iotg	5.15.0-1098.104	USN-8096-1
Ubuntu 22.04 LTS	linux-kvm	5.15.0-1095.100	USN-8096-1
Ubuntu 22.04 LTS	linux-lowlatency-hwe-6.8	6.8.0-117.117.1~22.04.1	USN-8278-1
Ubuntu 22.04 LTS	linux-nvidia	5.15.0-1098.99	USN-8096-1
Ubuntu 22.04 LTS	linux-nvidia-6.8	6.8.0-1054.57~22.04.1	USN-8289-2
Ubuntu 22.04 LTS	linux-nvidia-tegra	5.15.0-1055.55	USN-8096-1
Ubuntu 22.04 LTS	linux-nvidia-tegra-igx	5.15.0-1044.44	USN-8096-5
Ubuntu 22.04 LTS	linux-oracle	5.15.0-1100.106	USN-8096-1
Ubuntu 22.04 LTS	linux-oracle-6.8	6.8.0-1054.55~22.04.1	—
Ubuntu 22.04 LTS	linux-riscv +32	No fix yet	—
Ubuntu 22.04 LTS	linux-riscv-6.8	6.8.0-117.117~22.04.1	—
Ubuntu 22.04 LTS	linux-xilinx-zynqmp	5.15.0-1067.71	USN-8096-1

Show 9 more (older releases, extended support, other products)

Release	Package	Fixed in	Advisory
Ubuntu 20.04 LTS	linux-gke +28	No fix yet	—
Ubuntu 18.04 LTS	linux-gcp +14	No fix yet	—
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—
Ubuntu Pro Realtime 24.04 LTS	linux-raspi-realtime	6.8.0-2045.46	USN-8278-1
Ubuntu Pro Realtime 24.04 LTS	linux-realtime	6.8.1-1051.52	USN-8278-1
Ubuntu Pro Realtime 24.04 LTS	linux-realtime-6.14	No fix yet	—
Ubuntu Pro Realtime 24.04 LTS	linux-realtime-6.17	6.17.0-1018.20~24.04.1	USN-8570-1
Ubuntu Pro Realtime 22.04 LTS	linux-intel-iot-realtime	5.15.0-1094.96	USN-8116-1
Ubuntu Pro Realtime 22.04 LTS	linux-realtime	5.15.0-1102.111	USN-8096-4
Ubuntu Pro Realtime 22.04 LTS	linux-realtime-6.8	6.8.1-1051.52~22.04.1	USN-8278-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-aws-fips	6.8.0-1055.58+fips1	USN-8278-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-azure-fips	6.8.0-1059.65+fips1	USN-8393-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-fips	6.8.0-116.116+fips1	USN-8296-1
Ubuntu Pro FIPS-updates 24.04 LTS	linux-gcp-fips	6.8.0-1058.61+fips1	USN-8278-1
Ubuntu Pro FIPS-updates 22.04 LTS	linux-aws-fips	5.15.0-1103.110+fips1	USN-8096-2
Ubuntu Pro FIPS-updates 22.04 LTS	linux-azure-fips	5.15.0-1109.118+fips1	USN-8163-1
Ubuntu Pro FIPS-updates 22.04 LTS	linux-fips	5.15.0-173.183+fips1	USN-8096-2
Ubuntu Pro FIPS-updates 22.04 LTS	linux-gcp-fips	5.15.0-1103.112+fips1	USN-8096-2
Ubuntu Pro FIPS-preview 22.04 LTS	linux-fips +3	No fix yet	—
Ubuntu Pro 20.04 LTS	linux-aws-5.15	5.15.0-1103.110~20.04.1	USN-8096-3
Ubuntu Pro 20.04 LTS	linux-azure-5.15	5.15.0-1110.119~20.04.1	USN-8243-1
Ubuntu Pro 20.04 LTS	linux-gcp-5.15	5.15.0-1103.112~20.04.1	USN-8096-3
Ubuntu Pro 20.04 LTS	linux-hwe-5.15 +1	5.15.0-173.183~20.04.1	USN-8096-3
Ubuntu Pro 20.04 LTS	linux-ibm-5.15	5.15.0-1097.100~20.04.1	USN-8096-1
Ubuntu Pro 20.04 LTS	linux-intel-iotg-5.15	5.15.0-1098.104~20.04.1	USN-8096-3
Ubuntu Pro 20.04 LTS	linux-nvidia-tegra-5.15	5.15.0-1055.55~20.04.1	USN-8096-1
Ubuntu Pro 20.04 LTS	linux-oracle-5.15	5.15.0-1100.106~20.04.1	USN-8096-3
Ubuntu Pro 20.04 LTS	linux-riscv-5.15	5.15.0-1097.101~20.04.1	—

Advisories 33

WID-SEC-2026-0280 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
SSA-457936 SSA-457936: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.7 Siemens ProductCERT · Nov 10, 2026
USN-8604-1 linux-azure-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8440-1 linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8499-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8393-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
USN-8669-1 linux-nvidia-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8570-1 linux-gcp-6.17, linux-realtime-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8570-2 linux-oracle-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8594-1 linux-oem-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 6, 2026
USN-8278-1 linux, linux-aws, linux-aws-fips, linux-gcp, linux-gcp-fips, linux-gke, linux-gkeop, linux-ibm, linux-ibm-6.8, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-raspi, linux-raspi-realtime, linux-realtime, linux-realtime-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 5, 2026
USN-8289-1 linux-nvidia, linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Nov 5, 2026
USN-8289-2 linux-nvidia-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 5, 2026
USN-8278-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 5, 2026
USN-8096-1 linux, linux-aws, linux-gcp, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-oracle, linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8296-1 linux-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8296-2 linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8243-1 linux-azure-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8096-3 linux-aws-5.15, linux-gcp-5.15, linux-gke, linux-hwe-5.15, linux-intel-iotg-5.15, linux-lowlatency-hwe-5.15, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8116-1 linux-intel-iot-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8096-2 linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8163-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8141-1 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8163-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8096-5 linux-nvidia-tegra-igx vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
USN-8096-4 linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
ICSA-26-295-11 Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP CISA ICS & IT advisories · Oct 22, 2026
USN-8605-1 linux-azure-fde-6.17 vulnerabilities Ubuntu Security Notices (USN) · Oct 17, 2026
SSA-019113 SSA-019113: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.6 Siemens ProductCERT · Oct 13, 2026
ICSA-26-209-04 Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP CISA ICS & IT advisories · Jul 28, 2026
DSA-6127-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
DSA-6126-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
DLA-4476-1 linux-6.1 - security update Debian Security (DSA / DLA) · Feb 10, 2026

References