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CVE-2026-68345

arm_mpam: guard MBWU state before adding it to garbage

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 41e8a14950e1732af51cfec8fa09f8ded02a5ca9
Version < ca1f96334267ab8d47b2c9d535cdc9920fdde269
Status affected
Version 41e8a14950e1732af51cfec8fa09f8ded02a5ca9
Version < 977f52909c624210178a1247fab0b02b110c1106
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.19
Status affected
Version 0
Version < 6.19
Status unaffected
Version <= 7.1.*
Version 7.1.6
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.098
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/ca1f96334267ab8d47b2c9d535cdc9920fdde269
https://git.kernel.org/stable/c/977f52909c624210178a1247fab0b02b110c1106