CVE-2022-50005
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)
nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout
In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout When the pn532 uart device is detaching, the pn532_uart_remove() is called. But there are no functions in pn532_uart_remove() that could delete the cmd_timeout timer, which will cause use-after-free bugs. The process is shown below: (thread 1) | (thread 2) | pn532_uart_send_frame pn532_uart_remove | mod_timer(&pn532->cmd_timeout,...) ... | (wait a time) kfree(pn532) //FREE | pn532_cmd_timeout | pn532_uart_send_frame | pn532->... //USE This patch adds del_timer_sync() in pn532_uart_remove() in order to prevent the use-after-free bugs. What's more, the pn53x_unregister_nfc() is well synchronized, it sets nfc_dev->shutting_down to true and there are no syscalls could restart the cmd_timeout timer.
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) |
|---|---|---|---|---|---|
| c656aa4c27b17a8c70da223ed5ab42145800d6b5 | affected | git | 50403ee6daddf0d7a14e9d3b51a377c39a08ec8c | Unavailable | None listed |
| c656aa4c27b17a8c70da223ed5ab42145800d6b5 | affected | git | 9c34c33893db7a80d0e4b55c23d3b65e29609cfb | Unavailable | None listed |
| c656aa4c27b17a8c70da223ed5ab42145800d6b5 | affected | git | 2c71f5d55a86fd5969428abf525c1ae6b1c7b0f5 | Unavailable | None listed |
| c656aa4c27b17a8c70da223ed5ab42145800d6b5 | affected | git | f1e941dbf80a9b8bab0bffbc4cbe41cc7f4c6fb6 | 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) |
|---|---|---|---|---|---|
| 5.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.5 | Unavailable | None listed |
| 5.10.140 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.64 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.19.6 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |