USB: gadget: ffs: fix mm lifetime handling
In the Linux kernel, the following vulnerability has been resolved: USB: gadget: ffs: fix mm lifetime handling io_data stores a pointer to the submitting task's mm_struct, but does not currently hold a reference to it while async requests are pending. This can result in a use-after-free if the task exits before completion handling finishes. Take a reference with mmgrab() when queuing the read request and release it with mmdrop() on request completion.
CVE-2026-90045
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-2026-90045
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": "2e4c7553cd6f9c68bb741582dcb614edcbeca70f",
"lessThan": "aee2fde0f39e2b667084f4d5cc323a5c5543d733",
"versionType": "git"
},
{
"status": "affected",
"version": "2e4c7553cd6f9c68bb741582dcb614edcbeca70f",
"lessThan": "1625827648f4e1595ea6ba5521bc87ee5088b32b",
"versionType": "git"
},
{
"status": "affected",
"version": "2e4c7553cd6f9c68bb741582dcb614edcbeca70f",
"lessThan": "f3d31484b3f26d63c09e5569ebfaa1079a17f171",
"versionType": "git"
},
{
"status": "affected",
"version": "2e4c7553cd6f9c68bb741582dcb614edcbeca70f",
"lessThan": "7411de0ce3b45286de1de82526795658ea6eacb0",
"versionType": "git"
},
{
"status": "affected",
"version": "2e4c7553cd6f9c68bb741582dcb614edcbeca70f",
"lessThan": "5eb5c72c72fef76cb765ef1669b62b6a3ba1bfc8",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_fs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_fs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90045
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48590 · Revision 1
- Added to Heist Feed
- Publisher date