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CVE-2024-36979 is a use-after-free vulnerability in the Linux kernel network bridge Multiple Spanning Tree (MST) VLAN handling code. A VLAN object can be freed while the bridge forward-delay timer path walks the VLAN list, leaving the MST state-setting path able to access freed memory. The fix corrects RCU usage and protects br_mst_vlan_set_state with an RCU read lock.
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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.
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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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel vulnerability covered by the security update.
A Linux kernel bridge networking vulnerability involving a VLAN use-after-free.
Linux kernel bridge MST VLAN use-after-free flaw fixed in the updated image.
Linux kernel bridge MST VLAN use-after-free flaw.
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.