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CVE-2024-25739 is an improper validation flaw in the Linux kernel UBI flash-storage subsystem. In kernel versions through 6.7.4, create_empty_lvol() in drivers/mtd/ubi/vtbl.c does not validate ubi->leb_size before using it. A zero logical eraseblock size can cause the function to attempt a zero-byte allocation and crash the kernel. The issue was fixed upstream in Linux kernel 6.9-rc1.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel flaw caused by a missing leb_size validation check that can cause a system crash.
Linux kernel crash caused by a missing leb_size validation check.
Linux kernel flaw fixed in the updated RHEL 8 flatpak-sdk container image.
Linux kernel crash caused by a missing leb_size check.
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.