Bug 2467133 (CVE-2026-43145)

Summary: CVE-2026-43145 kernel: remoteproc: imx_rproc: Fix invalid loaded resource table detection
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's remoteproc (remote processor) subsystem, specifically within the `imx_rproc` driver. The `imx_rproc_elf_find_loaded_rsc_table()` function could incorrectly report the presence of a loaded resource table even when the current firmware did not provide one. This misinterpretation by the remoteproc core could lead to a system crash, resulting in a Denial of Service (DoS) when attempting to start firmware without a resource table.
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Description OSIDB Bzimport 2026-05-06 13:06:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

remoteproc: imx_rproc: Fix invalid loaded resource table detection

imx_rproc_elf_find_loaded_rsc_table() may incorrectly report a loaded
resource table even when the current firmware does not provide one.

When the device tree contains a "rsc-table" entry, priv->rsc_table is
non-NULL and denotes where a resource table would be located if one is
present in memory. However, when the current firmware has no resource
table, rproc->table_ptr is NULL. The function still returns
priv->rsc_table, and the remoteproc core interprets this as a valid loaded
resource table.

Fix this by returning NULL from imx_rproc_elf_find_loaded_rsc_table() when
there is no resource table for the current firmware (i.e. when
rproc->table_ptr is NULL). This aligns the function's semantics with the
remoteproc core: a loaded resource table is only reported when a valid
table_ptr exists.

With this change, starting firmware without a resource table no longer
triggers a crash.
Comment 1 Keith Grant 2026-05-06 18:38:21 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050626-CVE-2026-43145-59af@gregkh/T