CVE-2024-26770: HID: nvidia-shield: Add missing null pointer checks to LED initialization
In the Linux kernel, the following vulnerability has been resolved:
HID: nvidia-shield: Add missing null pointer checks to LED initialization
devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.
[jkosina@suse.com: tweak changelog a bit]
Security readout for executives and security teams
Plain-English summary
This is a Linux kernel defect in the NVIDIA SHIELD HID driver. During LED initialization, memory allocation can fail and return NULL; the fixed code adds missing checks. The source bundle provides no CVSS score, no CWE, and no confirmed active exploitation, so business urgency should be driven by kernel exposure and vendor update status.
Executive priority
Treat this as a routine kernel maintenance item unless your environment depends on the affected HID driver or your vendor rates it higher. There is no source-backed evidence of active exploitation, but kernel fixes should still enter the normal patch cycle.
Technical view
CVE-2024-26770 addresses missing NULL pointer validation after devm_kasprintf() in HID nvidia-shield LED initialization. The Linux stable fixes add allocation-result checks. The available record identifies Linux kernel versions as affected but does not describe a remote attack path, privilege requirement, or confirmed security impact beyond the unsafe NULL handling condition.
Likely exposure
Exposure is most relevant to Linux systems running affected kernel builds with the nvidia-shield HID driver path present or reachable. The bundle lists Linux 6.5, 6.6.19, 6.7.7, and 6.8-related affected data, but operators should map this against their distribution kernel advisories.
Exploitation context
The source bundle does not show CISA KEV listing, public exploitation, exploit availability, or a practical trigger path. The defect depends on a failed allocation during driver LED initialization, but the sources do not establish how reliably an attacker could cause that condition.
Researcher notes
The record is sparse: no CVSS, CWE, exploit narrative, or detailed affected range semantics are provided. Analysis should stay close to the Linux commit text and vendor kernel advisories. Avoid assuming remote exploitation, privilege escalation, or confidentiality impact from the available evidence.
Mitigation direction
Check distribution advisories for CVE-2024-26770 and install fixed kernel packages.
Prioritize hosts using NVIDIA SHIELD HID controller support or loading that driver.
Track the referenced Linux stable commits in kernel build provenance.
If no vendor package exists, follow vendor guidance for backporting the NULL checks.
Validation and detection
Inventory Linux kernel versions and compare them with distribution advisories for this CVE.
Check whether the nvidia-shield HID driver is built, packaged, or loaded.
Confirm patched kernels include one of the referenced stable fixes or equivalent backport.
Review vulnerability scanner findings for kernel package mapping accuracy.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2024-26770 mapping review
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