CVE-2022-49755
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait While performing fast composition switch, there is a possibility that the process of ffs_ep0_write/ffs_ep0_read get into a race condition due to ep0req being freed up from functionfs_unbind. Consider the scenario that the ffs_ep0_write calls the ffs_ep0_queue_wait by taking a lock &ffs->ev.waitq.lock. However, the functionfs_unbind isn't bounded so it can go ahead and mark the ep0req to NULL, and since there is no NULL check in ffs_ep0_queue_wait we will end up in use-after-free. Fix this by making a serialized execution between the two functions using a mutex_lock(ffs->mutex).
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | facf353c9e8d7885b686d9a4b173d4e0af6441d2 | Unavailable | None listed |
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | e9036e951f93fb8d7b5e9d6e2c7f94a4da312ae4 | Unavailable | None listed |
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | a8d40942df074f4ebcb9bd3413596d92f323b064 | Unavailable | None listed |
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | 6dd9ea05534f323668db94fcc2726c7a84547e78 | Unavailable | None listed |
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | ae8e136bcaae96163b5821984de1036efc9abb1a | Unavailable | None listed |
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | 6aee197b7fbcd61596a78b47d553f2f99111f217 | Unavailable | None listed |
| ddf8abd2599491cbad959c700b90ba72a5dce8d0 | affected | git | 6a19da111057f69214b97c62fb0ac59023970850 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.35 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.35 | Unavailable | None listed |
| 4.14.305 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.272 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.231 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.166 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.91 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.9 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |