| Title | Jens Axboe Fio 3.41 / master commit 84787ad Use After Free |
|---|
| Description | fio version 3.41 (master commit 84787ad) contains a heap-use-after-free vulnerability in its option parsing logic. During jobfile parsing, the function __parse_jobs_ini() (init.c) allocates an options array (opts) that is later freed. However, the freed array is still passed into fio_options_parse() (options.c), which calls sort_options() to sort the options using qsort().
The qsort() comparator (opt_cmp() in parse.c:1139) dereferences entries from the freed memory, leading to a use-after-free (UAF). |
|---|
| Source | ⚠️ https://github.com/axboe/fio/issues/1981 |
|---|
| User | ahuo (UID 90189) |
|---|
| Submission | 09/14/2025 10:22 (7 months ago) |
|---|
| Moderation | 09/21/2025 18:05 (7 days later) |
|---|
| Status | Accepted |
|---|
| VulDB entry | 325181 [axboe fio up to 3.41 init.c __parse_jobs_ini use after free] |
|---|
| Points | 20 |
|---|