CVE-2023-52439
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
uio: Fix use-after-free in uio_open
In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
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) |
|---|---|---|---|---|---|
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 3174e0f7de1ba392dc191625da83df02d695b60c | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | e93da893d52d82d57fc0db2ca566024e0f26ff50 | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 5e0be1229ae199ebb90b33102f74a0f22d152570 | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 5cf604ee538ed0c467abe3b4cda5308a6398f0f7 | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 17a8519cb359c3b483fb5c7367efa9a8a508bdea | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 35f102607054faafe78d2a6994b18d5d9d6e92ad | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 913205930da6213305616ac539447702eaa85e41 | Unavailable | None listed |
| 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 | affected | git | 0c9ae0b8605078eafc3bea053cc78791e97ba2e2 | Unavailable | None listed |
| 13af019c87f2d90e663742cb1a819834048842ae | affected | git | Unavailable | Unavailable | None listed |
| 4.14.100 | affected | semver | 4.15 | 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) |
|---|---|---|---|---|---|
| 4.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.18 | Unavailable | None listed |
| 4.19.306 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.268 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.209 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.148 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.74 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.13 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.7.1 | unaffected | semver | Unavailable | 6.7.* | None listed |
| 6.8 | unaffected | original_commit_for_fix | Unavailable | * | None listed |