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CVE-2022-50673 is a use-after-free vulnerability in the Linux kernel ext4 filesystem's orphan-inode cleanup path during filesystem mount. When ext4 orphan cleanup processes an orphaned inode, it adds the inode to the orphan list and may invoke truncation. If journal-inode attachment then fails with an out-of-memory error, the inode can be released while the last-orphan state still references it. A subsequent cleanup iteration can add the already freed inode to the orphan list, dereferencing freed memory. The upstream fix propagates the journal-inode attachment failure correctly, preventing reuse of the stale inode reference.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel ext4 use-after-free vulnerability in ext4_orphan_cleanup.
A Linux kernel ext4 use-after-free vulnerability in ext4_orphan_cleanup.
A Linux kernel ext4 use-after-free vulnerability in ext4_orphan_cleanup.
A Linux kernel ext4 use-after-free vulnerability in ext4_orphan_cleanup.
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.