7.4

CVE-2026-93260

powerpc/xive: propagate IPI init errors to prevent use-after-free

In the Linux kernel, the following vulnerability has been resolved:

powerpc/xive: propagate IPI init errors to prevent use-after-free

When xive_init_ipis() fails (e.g. irq_domain_alloc_irqs() fails),
the error path frees the global xive_ipis array.  However,
xive_smp_probe() previously ignored this failure and proceeded to
call xive_setup_cpu_ipi(), which dereferences the already-freed
xive_ipis pointer -- a use-after-free.

Now that xive_smp_probe() returns int (previous patch), propagate
the error from xive_init_ipis() and xive_setup_cpu_ipi() through
xive_smp_probe().  Check the return value in both pnv_smp_probe()
and pSeries_smp_probe() so that IPI setup is aborted cleanly on
failure, avoiding the use-after-free.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 243e25112d06b348f087a6f7aba4bbc288285bdd
Version < c554a8d376d5aea1b237ed6bef6f9fbfc550e67f
Status affected
Version 243e25112d06b348f087a6f7aba4bbc288285bdd
Version < 411a3c016e7a95f5fa105a0587e07d0647a77727
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.12
Status affected
Version 0
Version < 4.12
Status unaffected
Version <= 7.2.*
Version 7.2.6
Status unaffected
Version <= *
Version 7.3-rc1
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 0.13% 0.024
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.4 1.4 5.9
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/c554a8d376d5aea1b237ed6bef6f9fbfc550e67f
https://git.kernel.org/stable/c/411a3c016e7a95f5fa105a0587e07d0647a77727