Loading vulnerability…
CVE-2024-39276 is a reference-count leak in the Linux kernel ext4 extended-attribute block-cache lookup path, ext4_xattr_block_cache_find(). When an existing mb_cache entry is found, its e_refcnt is incremented by the cache lookup. If the subsequent ext4_sb_bread() operation fails with -ENOMEM, the error path does not release that acquired cache-entry reference. Repeated execution of this path leaks references and can cause mb_cache_destroy() to detect outstanding references during ext4 filesystem teardown.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A reference-count leak in the Linux kernel ext4 extended-attribute block cache lookup path.
A CVE referenced by the OpenShift Container Platform 4.17.19 advisory; the content provides no vulnerability-specific description.
A low-severity Linux kernel ext4 filesystem flaw involving a reference-count leak in mb_cache_entry during ext4_xattr_block_cache_find().
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.