CVE-2020-36788
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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().
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/548f2ff8ea5e0ce767ae3418d1ec5308990be87dPatch
- https://git.kernel.org/stable/c/bcf34aa5082ee2343574bc3f4d1c126030913e54Patch
- https://git.kernel.org/stable/c/f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96Patch
- https://git.kernel.org/stable/c/548f2ff8ea5e0ce767ae3418d1ec5308990be87dPatch
- https://git.kernel.org/stable/c/bcf34aa5082ee2343574bc3f4d1c126030913e54Patch
- https://git.kernel.org/stable/c/f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.