Answer in brief
CVE-2024-44965 records a Unknown severity vulnerability in x86/mm: Fix pti_clone_pgtable() alignment assumption. 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.
A CVSS score is not reported in the current record. 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 | >=16a3fe634f6a568c6234b8747e5d50487fed3526 <18da1b27ce16a14a9b636af9232acb4fb24f4c9e || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <25a727233a40a9b33370eec9f0cad67d8fd312f8 || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6 || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <4d143ae782009b43b4f366402e5c37f59d4e4346 || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <5c580c1050bcbc15c3e78090859d798dcf8c9763 || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <df3eecb5496f87263d171b254ca6e2758ab3c35c || >=16a3fe634f6a568c6234b8747e5d50487fed3526 <41e71dbb0e0a0fe214545fe64af031303a08524c | 18da1b27ce16a14a9b636af9232acb4fb24f4c9e, 25a727233a40a9b33370eec9f0cad67d8fd312f8, d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6, 4d143ae782009b43b4f366402e5c37f59d4e4346, 5c580c1050bcbc15c3e78090859d798dcf8c9763, ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed, df3eecb5496f87263d171b254ca6e2758ab3c35c, 41e71dbb0e0a0fe214545fe64af031303a08524c |
| Linux/Linuxgeneric | 4.19 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
Published upstream
Sep 4, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix pti_clone_pgtable() alignment assumption Guenter reported dodgy crashes on an i386-nosmp build using GCC-11 that had the form of endless traps until entry stack exhaust and then #DF from the stack guard. It turned out that pti_clone_pgtable() had alignment assumptions on the start address, notably it hard assumes start is PMD aligned. This is true on x86_64, but very much not true on i386. These assumptions can cause the end condition to malfunction, leading to a 'short' clone. Guess what happens when the user mapping has a short copy of the entry text? Use the correct increment form for addr to avoid alignment assumptions.
Quoted source text, attributed separately from HOL analysis.