CVE-2025-22045 (GCVE-0-2025-22045)
Vulnerability from cvelistv5
Published
2025-04-16 14:12
Modified
2025-05-26 05:17
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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/20241230175550.4046587-13-riel@surriel.com/>)
would probably be making the impact of this a lot worse.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 Version: 016c4d92cd16f569c6485ae62b076c1a4b779536 |
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|
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{
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.20"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.292",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.236",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.180",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.134",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.87",
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{
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"version": "6.12.23",
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},
{
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"version": "6.13.11",
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},
{
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"version": "6.14.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Fix flush_tlb_range() when used for zapping normal PMDs\n\nOn the following path, flush_tlb_range() can be used for zapping normal\nPMD entries (PMD entries that point to page tables) together with the PTE\nentries in the pointed-to page table:\n\n collapse_pte_mapped_thp\n pmdp_collapse_flush\n flush_tlb_range\n\nThe arm64 version of flush_tlb_range() has a comment describing that it can\nbe used for page table removal, and does not use any last-level\ninvalidation optimizations. Fix the X86 version by making it behave the\nsame way.\n\nCurrently, X86 only uses this information for the following two purposes,\nwhich I think means the issue doesn\u0027t have much impact:\n\n - In native_flush_tlb_multi() for checking if lazy TLB CPUs need to be\n IPI\u0027d to avoid issues with speculative page table walks.\n - In Hyper-V TLB paravirtualization, again for lazy TLB stuff.\n\nThe patch \"x86/mm: only invalidate final translations with INVLPGB\" which\nis currently under review (see\n\u003chttps://lore.kernel.org/all/20241230175550.4046587-13-riel@surriel.com/\u003e)\nwould probably be making the impact of this a lot worse."
}
],
"providerMetadata": {
"dateUpdated": "2025-05-26T05:17:16.433Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/618d5612ecb7bfc1c85342daafeb2b47e29e77a3"
},
{
"url": "https://git.kernel.org/stable/c/556d446068f90981e5d71ca686bdaccdd545d491"
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{
"url": "https://git.kernel.org/stable/c/0a8f806ea6b5dd64b3d1f05ff774817d5f7ddbd1"
},
{
"url": "https://git.kernel.org/stable/c/0708fd6bd8161871bfbadced2ca4319b84ab44fe"
},
{
"url": "https://git.kernel.org/stable/c/7085895c59e4057ffae17f58990ccb630087d0d2"
},
{
"url": "https://git.kernel.org/stable/c/93224deb50a8d20df3884f3672ce9f982129aa50"
},
{
"url": "https://git.kernel.org/stable/c/320ac1af4c0bdb92c864dc9250d1329234820edf"
},
{
"url": "https://git.kernel.org/stable/c/78d6f9a9eb2a5da6fcbd76d6191d24b0dcc321be"
},
{
"url": "https://git.kernel.org/stable/c/3ef938c3503563bfc2ac15083557f880d29c2e64"
}
],
"title": "x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-22045",
"datePublished": "2025-04-16T14:12:05.849Z",
"dateReserved": "2024-12-29T08:45:45.810Z",
"dateUpdated": "2025-05-26T05:17:16.433Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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