Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 41e8a14950e1732af51cfec8fa09f8ded02a5ca9 before ca1f96334267ab8d47b2c9d535cdc9920fdde269; affected 41e8a14950e1732af51cfec8fa09f8ded02a5ca9 before 977f52909c624210178a1247fab0b02b110c1106 |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.