Answer in brief
CVE-2025-22045 records a High severity (CVSS 7.8) vulnerability in x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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 7.8. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=016c4d92cd16f569c6485ae62b076c1a4b779536 <618d5612ecb7bfc1c85342daafeb2b47e29e77a3 || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <556d446068f90981e5d71ca686bdaccdd545d491 || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <0a8f806ea6b5dd64b3d1f05ff774817d5f7ddbd1 || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <0708fd6bd8161871bfbadced2ca4319b84ab44fe || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <7085895c59e4057ffae17f58990ccb630087d0d2 || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <93224deb50a8d20df3884f3672ce9f982129aa50 || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <320ac1af4c0bdb92c864dc9250d1329234820edf || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <78d6f9a9eb2a5da6fcbd76d6191d24b0dcc321be || >=016c4d92cd16f569c6485ae62b076c1a4b779536 <3ef938c3503563bfc2ac15083557f880d29c2e64 | 618d5612ecb7bfc1c85342daafeb2b47e29e77a3, 556d446068f90981e5d71ca686bdaccdd545d491, 0a8f806ea6b5dd64b3d1f05ff774817d5f7ddbd1, 0708fd6bd8161871bfbadced2ca4319b84ab44fe, 7085895c59e4057ffae17f58990ccb630087d0d2, 93224deb50a8d20df3884f3672ce9f982129aa50, 320ac1af4c0bdb92c864dc9250d1329234820edf, 78d6f9a9eb2a5da6fcbd76d6191d24b0dcc321be, 3ef938c3503563bfc2ac15083557f880d29c2e64 |
| Linux/Linuxgeneric | 4.20 | Not reported |
Published upstream
Apr 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs On the following path, flush_tlb_range() can be used for zapping normal PMD entries (PMD entries that point to page tables) together with the PTE entries in the pointed-to page table: collapse_pte_mapped_thp pmdp_collapse_flush flush_tlb_range The arm64 version of flush_tlb_range() has a comment describing that it can be used for page table removal, and does not use any last-level invalidation optimizations. Fix the X86 version by making it behave the same way. Currently, X86 only uses this information for the following two purposes, which I think means the issue doesn't have much impact: - In native_flush_tlb_multi() for checking if lazy TLB CPUs need to be IPI'd to avoid issues with speculative page table walks. - In Hyper-V TLB paravirtualization, again for lazy TLB stuff. The patch "x86/mm: only invalidate final translations with INVLPGB" which is currently under review (see <https://lore.kernel.org/all/[email protected]/>) would probably be making the impact of this a lot worse.
Quoted source text, attributed separately from HOL analysis.