# CVE-2020-36788: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/nouveau: avoid a use-after-free when BO init...

CVE-2020-36788 is fixed in linux on 1 platform, first by DEBIAN-CVE-2020-36788, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-36788
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/nouveau: avoid a use-after-free when BO init fails  nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm_bo_init() invokes the provided destructor which should de-initialize and free the memory.  Thus, when nouveau_bo_init() returns an error the gem object has already been released and the memory freed by nouveau_bo_del_ttm().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.14.12-1 | [DEBIAN-CVE-2020-36788](https://patchblox.com/security/data/fix/linux/debian-cve-2020-36788.md) | May 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.14.12-1 | [DEBIAN-CVE-2020-36788](https://patchblox.com/security/data/fix/linux/debian-cve-2020-36788.md) | May 21, 2024 |
| Linux | linux Debian 14 | 5.14.12-1 | [DEBIAN-CVE-2020-36788](https://patchblox.com/security/data/fix/linux/debian-cve-2020-36788.md) | May 21, 2024 |

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