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CVE-2026-23019 In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix NULL dereference on…

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 and versions

Product Affected versions Fixed in
Linux 6.19 earliest → < 6.19 6.19
Linux 6.18 earliest → < 6.18.6 6.18.6
Linux 6.12 earliest → < 6.12.66 6.12.66
Linux 6.6 earliest → < 6.6.121 6.6.121
Linux 6.1 earliest → < 6.1.161 6.1.161
Linux 5.15 earliest → < 5.15.198 5.15.198
Linux 5.10 No fix stated
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → latest No fix stated
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.7 → latest No fix stated
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Product Affected versions Fixed in
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → latest No fix stated

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