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
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.
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.