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CVE-2024-38541 is an out-of-bounds write vulnerability in the Linux kernel Open Firmware (OF) module code's of_modalias() function. If the caller supplies an output buffer too small for the initial snprintf() operation, the resulting length value can become negative and the output pointer can be advanced beyond the end of the buffer. Subsequent operations may therefore write outside the allocated buffer. The upstream fix adds an overflow check after the first snprintf() call and corrects the subsequent post-strlen() bounds check to account for the terminating NUL byte.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical network-reachable vulnerability with low attack complexity and no required privileges or user interaction, potentially allowing complete compromise of confidentiality, integrity, and availability according to the listed CVSS v3 vector.
Linux kernel Open Firmware module alias buffer-overflow issue.
Linux kernel Open Firmware modalias buffer-overflow flaw.
Linux kernel Open Firmware modalias buffer-overflow flaw.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.