CVE-2026-23042
published 2026-02-04CVE-2026-23042: In the Linux kernel, the following vulnerability has been resolved: idpf: fix aux device unplugging when rdma is not supported by vport If vport flags do not…
PriorityP423medium5.5
EPSS
0.14%
4.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not
allocate vdev_info for this vport. This leads to kernel NULL pointer
dereference in idpf_idc_vport_dev_down(), which references vdev_info for
every vport regardless.
Check, if vdev_info was ever allocated before unplugging aux device.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.18.8-1 (forky) | linux 6.18.8-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= be91128c579c86d295da4325f6ac4710e4e6d2b4 < 0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a | 0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a |
| linux | linux | >= be91128c579c86d295da4325f6ac4710e4e6d2b4 < 4648fb2f2e7210c53b85220ee07d42d1e4bae3f9 | 4648fb2f2e7210c53b85220ee07d42d1e4bae3f9 |
| linux | linux_kernel | >= 0 < 6.18.8-1 | 6.18.8-1 |
| linux | linux_kernel | >= 6.17.0 < 6.18.6 | 6.18.6 |
| ubuntu | linux-azure-6.17 | — | — |
| ubuntu | linux-azure-fde-6.17 | — | — |
| ubuntu | linux-gcp-6.17 | — | — |
| ubuntu | linux-oem-6.17 | — | — |
| ubuntu | linux-oracle-6.17 | — | — |
| ubuntu | linux-realtime-6.17 | — | — |
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Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2026-07-28
CVE-2026-23057 Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Foo-over-UDP (FOU);
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Drivers core;
- Null block device driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPIO subsystem;
- GPU drivers;
- I2C subsystem;
- IIO ADC drivers;
- IIO subsystem;
- On-Chip Interconnect management framework;
- IOMMU subsystem;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
- UACCE accelerator framework;
- MMC subsystem
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2026-07-24
CVE-2026-23057 Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Foo-over-UDP (FOU);
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Null block device driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPIO subsystem;
- GPU drivers;
- I2C subsystem;
- IIO ADC drivers;
- IIO subsystem;
- InfiniBand drivers;
- On-Chip Interconnect management framework;
- IOMMU subsystem;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
- UA
Ubuntu
Linux kernel (Azure CVM) vulnerabilities
vendor_ubuntu·2026-07-24
CVE-2025-71190 Linux kernel (Azure CVM) vulnerabilities
Title: Linux kernel (Azure CVM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Foo-over-UDP (FOU);
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Null block device driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPIO subsystem;
- GPU drivers;
- I2C subsystem;
- IIO ADC drivers;
- IIO subsystem;
- InfiniBand drivers;
- On-Chip Interconnect management framework;
- IOMMU subsystem;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2026-07-23
CVE-2025-71190 Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Foo-over-UDP (FOU);
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Drivers core;
- Null block device driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPIO subsystem;
- GPU drivers;
- I2C subsystem;
- IIO ADC drivers;
- IIO subsystem;
- On-Chip Interconnect management framework;
- IOMMU subsystem;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
- UACCE accelerator framework;
- MMC subsystem;
-
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-07-20
CVE-2025-71190 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Foo-over-UDP (FOU);
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Drivers core;
- Null block device driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPIO subsystem;
- GPU drivers;
- I2C subsystem;
- IIO ADC drivers;
- IIO subsystem;
- On-Chip Interconnect management framework;
- IOMMU subsystem;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- Multiple devices driver;
- UACCE accelerator framework;
- MMC subsystem;
- Ether
Red Hat
kernel: idpf: fix aux device unplugging when rdma is not supported by vport
vendor_redhat·2026-02-04·CVSS 5.5
CVE-2026-23042 [MEDIUM] CWE-476 kernel: idpf: fix aux device unplugging when rdma is not supported by vport
kernel: idpf: fix aux device unplugging when rdma is not supported by vport
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not
allocate vdev_info for this vport. This leads to kernel NULL pointer
dereference in idpf_idc_vport_dev_down(), which references vdev_info for
every vport regardless.
Check, if vdev_info was ever allocated before unplugging aux device.
Statement: The idpf driver can hit a NULL pointer dereference when unplugging the RDMA auxiliary device for a vport that does not support RDMA. If the vport flags do not include VIRTCHNL2_VPORT_ENABLE_RDMA then vdev_info is never allocated. The teardown path idpf_idc_vport_de
Debian
CVE-2026-23042: linux - In the Linux kernel, the following vulnerability has been resolved: idpf: fix a...
vendor_debian·2026
CVE-2026-23042 [LOW] CVE-2026-23042: linux - In the Linux kernel, the following vulnerability has been resolved: idpf: fix a...
In the Linux kernel, the following vulnerability has been resolved: idpf: fix aux device unplugging when rdma is not supported by vport If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not allocate vdev_info for this vport. This leads to kernel NULL pointer dereference in idpf_idc_vport_dev_down(), which references vdev_info for every vport regardless. Check, if vdev_info was ever allocated before unplugging aux device.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved (fixed in 6.18.8-1)
sid: resolved (fixed in 6.18.8-1)
trixie: resolved
VulDB
Linux Kernel up to 6.18.5/6.19-rc4 idpf idpf_idc_vport_dev_down null pointer dereference (Nessus ID 297914 / WID-SEC-2026-0324)
vuldb·2026-04-30
CVE-2026-23042 [CRITICAL] Linux Kernel up to 6.18.5/6.19-rc4 idpf idpf_idc_vport_dev_down null pointer dereference (Nessus ID 297914 / WID-SEC-2026-0324)
A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.18.5/6.19-rc4. The affected element is the function idpf_idc_vport_dev_down of the component idpf. This manipulation causes null pointer dereference.
This vulnerability is tracked as CVE-2026-23042. The attack is only possible within the local network. No exploit exists.
It is advisable to upgrade the affected component.
GHSA
GHSA-8936-48hj-4rqp: In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport fla
ghsa_unreviewed·2026-02-04
CVE-2026-23042 GHSA-8936-48hj-4rqp: In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport fla
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not
allocate vdev_info for this vport. This leads to kernel NULL pointer
dereference in idpf_idc_vport_dev_down(), which references vdev_info for
every vport regardless.
Check, if vdev_info was ever allocated before unplugging aux device.
OSV
CVE-2026-23042: In the Linux kernel, the following vulnerability has been resolved: idpf: fix aux device unplugging when rdma is not supported by vport If vport flags
osv·2026-02-04
CVE-2026-23042 CVE-2026-23042: In the Linux kernel, the following vulnerability has been resolved: idpf: fix aux device unplugging when rdma is not supported by vport If vport flags
In the Linux kernel, the following vulnerability has been resolved: idpf: fix aux device unplugging when rdma is not supported by vport If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not allocate vdev_info for this vport. This leads to kernel NULL pointer dereference in idpf_idc_vport_dev_down(), which references vdev_info for every vport regardless. Check, if vdev_info was ever allocated before unplugging aux device.
OSV
idpf: fix aux device unplugging when rdma is not supported by vport
osv·2026-02-04
CVE-2026-23042 idpf: fix aux device unplugging when rdma is not supported by vport
idpf: fix aux device unplugging when rdma is not supported by vport
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix aux device unplugging when rdma is not supported by vport
If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not
allocate vdev_info for this vport. This leads to kernel NULL pointer
dereference in idpf_idc_vport_dev_down(), which references vdev_info for
every vport regardless.
Check, if vdev_info was ever allocated before unplugging aux device.
No detection rules found.
No public exploits indexed.
2026-02-04
Published