CVE-2025-39870
published 2025-09-23CVE-2025-39870: In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix double free in idxd_setup_wqs() The clean up in idxd_setup_wqs() has…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: Fix double free in idxd_setup_wqs()
The clean up in idxd_setup_wqs() has had a couple bugs because the error
handling is a bit subtle. It's simpler to just re-write it in a cleaner
way. The issues here are:
1) If "idxd->max_wqs" is <= 0 then we call put_device(conf_dev) when
"conf_dev" hasn't been initialized.
2) If kzalloc_node() fails then again "conf_dev" is invalid. It's
either uninitialized or it points to the "conf_dev" from the
previous iteration so it leads to a double free.
It's better to free partial loop iterations within the loop and then
the unwinding at the end can handle whole loop iterations. I also
renamed the labels to describe what the goto does and not where the goto
was located.
Affected
26 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 3fd2f4bc010cdfbc07dd21018dc65bd9370eb7a4 < 9f0e225635475b2285b966271d5e82cba74295b1 | 9f0e225635475b2285b966271d5e82cba74295b1 |
| linux | linux | >= 3fd2f4bc010cdfbc07dd21018dc65bd9370eb7a4 < 39aaa337449e71a41d4813be0226a722827ba606 | 39aaa337449e71a41d4813be0226a722827ba606 |
| linux | linux | >= 47846211998a9ffb0fcc08092eb95ac783d2b11a < df82c7901513fd0fc738052a8e6a330d92cc8ec9 | df82c7901513fd0fc738052a8e6a330d92cc8ec9 |
| linux | linux | >= 5fcd392dae6d6aba7dc64ffdbb838ff191315da3 < ec5430d090d0b6ace8fefa290fc37e88930017d2 | ec5430d090d0b6ace8fefa290fc37e88930017d2 |
| linux | linux | >= 6.1.140 < 6.1.153 | 6.1.153 |
| linux | linux | >= 6.12.30 < 6.12.48 | 6.12.48 |
| linux | linux | >= 6.14.8 < 6.15 | 6.15 |
| linux | linux | >= 6.6.92 < 6.6.107 | 6.6.107 |
| linux | linux | >= d584acdf54f409cb7eae1359ae6c12aaabedeed8 < 25e6146c2812487a88f619d5ff6efbdcd5b2bc31 | 25e6146c2812487a88f619d5ff6efbdcd5b2bc31 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.1.153-1 | 6.1.153-1 |
| linux | linux_kernel | >= 0 < 6.12.48-1 | 6.12.48-1 |
| linux | linux_kernel | >= 0 < 6.16.8-1 | 6.16.8-1 |
| linux | linux_kernel | >= 0 < 6.8.0-106.106 | 6.8.0-106.106 |
| linux | linux_kernel | >= 6.1.140 < 6.1.153 | 6.1.153 |
| linux | linux_kernel | >= 6.12.30 < 6.12.48 | 6.12.48 |
| linux | linux_kernel | >= 6.14.8 < 6.15 | 6.15 |
| linux | linux_kernel | >= 6.15.1 < 6.16.8 | 6.16.8 |
| linux | linux_kernel | >= 6.6.92 < 6.6.107 | 6.6.107 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH