Answer in brief
CVE-2026-23019 records a Medium severity (CVSS 5.5) vulnerability in net: marvell: prestera: fix NULL dereference on devlink_alloc() failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-23019 records a Medium severity (CVSS 5.5) vulnerability in net: marvell: prestera: fix NULL dereference on devlink_alloc() failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <8a4333b2818f0d853b43e139936c20659366e4a0 || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <325aea74be7e192b5c947c782da23b0d19a5fda2 || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <94e070cd50790317fba7787ae6006934b7edcb6f || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <3950054c9512add0cc79ab7e72b6d2f9f675e25b || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <326a4b7e61d01db3507f71c8bb5e85362f607064 || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <a428e0da1248c353557970848994f35fd3f005e2 | 8a4333b2818f0d853b43e139936c20659366e4a0, 325aea74be7e192b5c947c782da23b0d19a5fda2, 94e070cd50790317fba7787ae6006934b7edcb6f, 3950054c9512add0cc79ab7e72b6d2f9f675e25b, 326a4b7e61d01db3507f71c8bb5e85362f607064, a428e0da1248c353557970848994f35fd3f005e2 |
| Linux/Linuxgeneric | 5.10 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Jan 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <8a4333b2818f0d853b43e139936c20659366e4a0 || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <325aea74be7e192b5c947c782da23b0d19a5fda2 || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <94e070cd50790317fba7787ae6006934b7edcb6f || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <3950054c9512add0cc79ab7e72b6d2f9f675e25b || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <326a4b7e61d01db3507f71c8bb5e85362f607064 || >=34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 <a428e0da1248c353557970848994f35fd3f005e2 | 8a4333b2818f0d853b43e139936c20659366e4a0, 325aea74be7e192b5c947c782da23b0d19a5fda2, 94e070cd50790317fba7787ae6006934b7edcb6f, 3950054c9512add0cc79ab7e72b6d2f9f675e25b, 326a4b7e61d01db3507f71c8bb5e85362f607064, a428e0da1248c353557970848994f35fd3f005e2 |
| Linux/Linuxgeneric | 5.10 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Jan 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
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.
Quoted source text, attributed separately from HOL analysis.