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CVE-2023-2513 is a use-after-free vulnerability in the Linux kernel ext4 filesystem's extended-attribute handling. The flaw occurs in ext4_xattr_set_entry() while processing extra inode size for extended attributes. A privileged local user with write access to an affected ext4 filesystem can trigger use of freed memory when the filesystem is mounted using the debug_want_extra_isize=128 debug option.
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No public exploit code observed for this vulnerability.
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15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel ext4 extended-attribute use-after-free in ext4_xattr_set_entry.
A use-after-free vulnerability in the Linux kernel ext4 filesystem's ext4_xattr_set_entry() function.
A use-after-free flaw in the Linux kernel ext4 extended-attribute handling function ext4_xattr_set_entry(). The Red Hat advisory supplies a fixed kernel update.
A use-after-free vulnerability in the Linux kernel ext4 extended-attribute handling function ext4_xattr_set_entry().
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.