Bug 2514453 (CVE-2026-68444)

Summary: CVE-2026-68444 kernel: firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `arm_ffa` firmware component. A local attacker or malicious process could exploit this vulnerability by providing a NULL argument to the `ffa_partition_info_get()` function. This missing NULL check leads to a NULL pointer dereference, causing a kernel panic and resulting in a Denial of Service (DoS) for the affected system.
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Description OSIDB Bzimport 2026-08-12 00:22:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()

ffa_partition_info_get() passes uuid_str directly to uuid_parse()
without a NULL check. When a caller passes NULL, uuid_parse() ->
__uuid_parse() -> uuid_is_valid() dereferences the pointer, causing
a kernel panic:

  |  Unable to handle kernel NULL pointer dereference at virtual address
  |  0000000000000040
  |  pc : uuid_parse+0x40/0xac
  |  lr : ffa_partition_info_get+0x1c/0x94 [arm_ffa]

Add a NULL guard before uuid_parse() so a NULL argument returns
-ENODEV instead of crashing. Callers are expected to always supply
a valid partition UUID, so NULL is not a supported input.
Comment 1 gkamathe 2026-08-12 05:09:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081257-CVE-2026-68444-1c3c@gregkh/T