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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-68345

arm_mpam: guard MBWU state before adding it to garbage

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: arm_mpam: guard MBWU state before adding it to garbage __destroy_component_cfg() adds each RIS mbwu_state object to the MPAM garbage list when destroying component configuration. However, mbwu_state is allocated per RIS and only for RISes with MBWU monitors. A component can therefore have comp->cfg allocated while some RISes still have ris->mbwu_state set to NULL. Passing a NULL mbwu_state to add_to_garbage() dereferences the NULL pointer inside the macro. Skip RISes that do not have an mbwu_state object before adding them to the garbage list.

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

  • 41e8a14950e1732af51cfec8fa09f8ded02a5ca9 to < ca1f96334267ab8d47b2c9d535cdc9920fdde269affected
  • 41e8a14950e1732af51cfec8fa09f8ded02a5ca9 to < 977f52909c624210178a1247fab0b02b110c1106affected

Linux Linux

Default version status: affected

  • 6.19affected
  • 0 to < 6.19unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References