CVE-2022-50453
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)
gpiolib: cdev: fix NULL-pointer dereferences
In the Linux kernel, the following vulnerability has been resolved: gpiolib: cdev: fix NULL-pointer dereferences There are several places where we can crash the kernel by requesting lines, unbinding the GPIO device, then calling any of the system calls relevant to the GPIO character device's annonymous file descriptors: ioctl(), read(), poll(). While I observed it with the GPIO simulator, it will also happen for any of the GPIO devices that can be hot-unplugged - for instance any HID GPIO expander (e.g. CP2112). This affects both v1 and v2 uAPI. This fixes it partially by checking if gdev->chip is not NULL but it doesn't entirely remedy the situation as we still have a race condition in which another thread can remove the device after the check.
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) |
|---|---|---|---|---|---|
| d7c51b47ac11e66f547b55640405c1c474642d72 | affected | git | 6d79546622baab843172b52c3af035f83c1b21df | Unavailable | None listed |
| d7c51b47ac11e66f547b55640405c1c474642d72 | affected | git | 7c755a2d6df511eeb5afba966ac28140f9ea5063 | Unavailable | None listed |
| d7c51b47ac11e66f547b55640405c1c474642d72 | affected | git | d66f68ac9e7ba46b6b90fbe25155723f2126088a | Unavailable | None listed |
| d7c51b47ac11e66f547b55640405c1c474642d72 | affected | git | ac6ce3cd7a3e10a2e37b8970bab81b4d33d5cfc3 | Unavailable | None listed |
| d7c51b47ac11e66f547b55640405c1c474642d72 | affected | git | 533aae7c94dbc2b14301cfd68ae7e0e90f0c8438 | 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) |
|---|---|---|---|---|---|
| 4.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.8 | Unavailable | None listed |
| 5.10.163 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.86 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.0.16 | unaffected | semver | Unavailable | 6.0.* | None listed |
| 6.1.2 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |