VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify
In the Linux kernel, the following vulnerability has been resolved: VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify During our test, it is found that a warning can be trigger in try_grab_folio as follow: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1678 at mm/gup.c:147 try_grab_folio+0x106/0x130 Modules linked in: CPU: 0 UID: 0 PID: 1678 Comm: syz.3.31 Not tainted 6.15.0-rc5 #163 PREEMPT(undef) RIP: 0010:try_grab_folio+0x106/0x130 Call Trace: follow_huge_pmd+0x240/0x8e0 follow_pmd_mask.constprop.0.isra.0+0x40b/0x5c0 follow_pud_mask.constprop.0.isra.0+0x14a/0x170 follow_page_mask+0x1c2/0x1f0 __get_user_pages+0x176/0x950 __gup_longterm_locked+0x15b/0x1060 ? gup_fast+0x120/0x1f0 gup_fast_fallback+0x17e/0x230 get_user_pages_fast+0x5f/0x80 vmci_host_unlocked_ioctl+0x21c/0xf80 RIP: 0033:0x54d2cd ---[ end trace 0000000000000000 ]--- Digging into the source, context->notify_page may init by get_user_pages_fast and can be seen in vmci_ctx_unset_notify which will try to put_page. However get_user_pages_fast is not finished here and lead to following try_grab_folio warning. The race condition is shown as follow: cpu0 cpu1 vmci_host_do_set_notify vmci_host_setup_notify get_user_pages_fast(uva, 1, FOLL_WRITE, &context->notify_page); lockless_pages_from_mm gup_pgd_range gup_huge_pmd // update &context->notify_page vmci_host_do_set_notify vmci_ctx_unset_notify notify_page = context->notify_page; if (notify_page) put_page(notify_page); // page is freed __
CVE-2025-38102
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-38102
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "74095bbbb19ca74a0368d857603a2438c88ca86c",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "468aec888f838ce5174b96e0cb4396790d6f60ca",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "b4209e4b778e4e57d0636e1c9fc07a924dbc6043",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "58a90db70aa6616411e5f69d1982d9b1dd97d774",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "6e3af836805ed1d7a699f76ec798626198917aa4",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "00ddc7dad55b7bbb78df80d6e174d0c4764dea0c",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "75b5313c80c39a26d27cbb602f968a05576c36f9",
"versionType": "git"
},
{
"status": "affected",
"version": "a1d88436d53a75e950db15834b3d2f8c0c358fdc",
"lessThan": "1bd6406fb5f36c2bb1e96e27d4c3e9f4d09edde4",
"versionType": "git"
}
],
"programFiles": [
"drivers/misc/vmw_vmci/vmci_host.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.296",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.240",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.186",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.142",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.94",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.34",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.3",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/misc/vmw_vmci/vmci_host.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38102
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30522 · Revision 1
- Added to Heist Feed
- Publisher date