CVE-2020-36788

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96affected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < 548f2ff8ea5e0ce767ae3418d1ec5308990be87daffected
LinuxLinux019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 < bcf34aa5082ee2343574bc3f4d1c126030913e54affected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.10.73 <= 5.10.*unaffected
LinuxLinux5.14.12 <= 5.14.*unaffected
LinuxLinux5.15 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References