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CVE-2023-1281 is a use-after-free vulnerability in the Linux kernel traffic-control index classifier (tcindex). While packets traverse the classifier, its imperfect-hash area can be updated and destroy a traffic-control extension still referenced by packet-processing code. A subsequent call to tcf_exts_exec() can dereference the freed extension. Linux kernel versions from 4.14 up to, but excluding, the upstream fix commit ee059170b1f7e94e55fa6cadee544e176a6e59c2 are affected.
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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.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free flaw in the Linux kernel tcindex traffic-control index filter that allows privilege escalation.
A Linux kernel use-after-free vulnerability in the traffic-control tcindex filter that allows privilege escalation.
A use-after-free vulnerability in the Linux kernel tcindex traffic-control index filter that allows privilege escalation.
A use-after-free flaw in the Linux kernel traffic-control tcindex filter that can allow privilege escalation, fixed by the kernel-rt update.
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.