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CVE-2023-53751 is a potential use-after-free vulnerability in the Linux kernel CIFS subsystem involving TCP_Server_Info::hostname. Reconnect operations can update the hostname repeatedly, while accesses outside the reconnect path lack adequate protection against those updates. This can result in access to freed hostname memory. The fix protects hostname access outside the reconnect path.
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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.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
A Linux kernel Bluetooth L2CAP use-after-free race condition that can cause a kernel crash.
A Linux kernel Bluetooth L2CAP use-after-free race condition that can cause a kernel crash.
A use-after-free race condition in Linux kernel Bluetooth L2CAP that can cause a kernel crash.
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.