usb: storage: realtek_cr: fix use-after-free on disconnect
In the Linux kernel, the following vulnerability has been resolved: usb: storage: realtek_cr: fix use-after-free on disconnect realtek_cr_destructor() calls timer_delete() before the chip containing the timer is freed. The timer callback may still be running and can rearm itself, resulting in a use-after-free. Use timer_shutdown_sync() to wait for the callback and prevent further rearming. Do this unconditionally because ss_en may be changed after the timer is armed. Move timer_setup() into init_realtek_cr() so the timer is initialized before any failure path can invoke the destructor. Found by static analysis.
CVE-2026-90029
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-2026-90029
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": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
"lessThan": "c1e7e35100efffba7c9e1dfa76519d6cd323ba3d",
"versionType": "git"
},
{
"status": "affected",
"version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
"lessThan": "524d4257f741cd95eb85e2817c9c890928fcfef7",
"versionType": "git"
},
{
"status": "affected",
"version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
"lessThan": "7c4e2f964c65dea4ea22386799d5fb10ef1e3e54",
"versionType": "git"
},
{
"status": "affected",
"version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
"lessThan": "cae9dbba6adae21a04a3bd045e07b489847ff2c6",
"versionType": "git"
},
{
"status": "affected",
"version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
"lessThan": "4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/storage/realtek_cr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"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/storage/realtek_cr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90029
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48583 · Revision 1
- Added to Heist Feed
- Publisher date