CVE-2022-48872
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)
misc: fastrpc: Fix use-after-free race condition for maps
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix use-after-free race condition for maps It is possible that in between calling fastrpc_map_get() until map->fl->lock is taken in fastrpc_free_map(), another thread can call fastrpc_map_lookup() and get a reference to a map that is about to be deleted. Rewrite fastrpc_map_get() to only increase the reference count of a map if it's non-zero. Propagate this to callers so they can know if a map is about to be deleted. Fixes this warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate ... Call trace: refcount_warn_saturate [fastrpc_map_get inlined] [fastrpc_map_lookup inlined] fastrpc_map_create fastrpc_internal_invoke fastrpc_device_ioctl __arm64_sys_ioctl invoke_syscall
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) |
|---|---|---|---|---|---|
| c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 | affected | git | 556dfdb226ce1e5231d8836159b23f8bb0395bf4 | Unavailable | None listed |
| c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 | affected | git | b171d0d2cf1b8387c72c8d325c5d5746fa271e39 | Unavailable | None listed |
| c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 | affected | git | 61a0890cb95afec5c8a2f4a879de2b6220984ef1 | Unavailable | None listed |
| c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 | affected | git | 079c78c68714f7d8d58e66c477b0243b31806907 | Unavailable | None listed |
| c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 | affected | git | 96b328d119eca7563c1edcc4e1039a62e6370ecb | 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) |
|---|---|---|---|---|---|
| 5.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.1 | Unavailable | None listed |
| 5.4.230 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.165 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.90 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.8 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |