CVE-2026-23019
BaseFortify
Publication date: 2026-01-31
Last updated on: 2026-03-25
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 5.10 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | From 6.13 (inc) to 6.18.6 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.121 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.66 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.161 (exc) |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | From 5.10.1 (inc) to 5.15.198 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update the Linux kernel to a version where the prestera driver includes the fix for the NULL pointer dereference in devlink_alloc(). This involves applying the patch that adds a NULL check for the devlink pointer in prestera_devlink_alloc() and returns early to avoid the crash.
Can you explain this vulnerability to me?
This vulnerability occurs in the Linux kernel's Marvell Prestera driver where a function called devlink_alloc() may fail and return NULL. However, the code does not check for this NULL return value and proceeds to use it, leading to a NULL pointer dereference and a potential crash. The fix involves adding a check for the NULL pointer and returning early to prevent the crash.
How can this vulnerability impact me? :
This vulnerability can cause the system to crash due to a NULL pointer dereference when the devlink allocation fails. This can lead to denial of service or instability in systems using the affected Marvell Prestera driver in the Linux kernel.