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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-98270

drm/amdgpu: check ras and obj before dereference

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check ras and obj before dereference nbio_v7_9_handle_ras_controller_intr_no_bifring() dereferences ras and obj without checking either for NULL. Both amdgpu_ras_get_context() and amdgpu_ras_find_obj() can return NULL, e.g. during the window between adev->nbio.ras being set (early in amdgpu_ras_init(), by design, to enable the fatal-error interrupt as soon as possible) and the PCIE_BIF ras object actually being created in RAS late_init. Any interrupt in that window crashes in hard-IRQ context. This is analogous to commit d190b459b2a4 ("drm/amdgpu: the warning dereferencing obj for nbio_v7_4"), which fixed the same issue in the nbio_v7_4 handler. Found by Linux Verification Center (linuxtesting.org) with SVACE. (cherry picked from commit c7071767a50a32ed727cf800ac84372429e3b4b3)

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 7692e1ee2446fd1940b5caa6e09779504a58881a to < b7c7f07a40037514f8e890aa00f8d7b196d680cfaffected
  • 7692e1ee2446fd1940b5caa6e09779504a58881a to < fc5f845a291fc8175e6857cd6ad042818da192e8affected
  • 7692e1ee2446fd1940b5caa6e09779504a58881a to < 37583946d8751f8e285c467d770ac0b609b82a23affected
  • 7692e1ee2446fd1940b5caa6e09779504a58881a to < 315c22712715491f0dfafdaf2c2b437540e68702affected
  • 7692e1ee2446fd1940b5caa6e09779504a58881a to < 723d4dc628d764b19cf9efca14b82cca5ff020c9affected

Linux Linux

Default version status: affected

  • 6.6affected
  • 0 to < 6.6unaffected
  • 6.6.158 to ≤ 6.6.*unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.54 to ≤ 6.18.*unaffected
  • 7.2.8 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References