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CVE-2024-46858 is a use-after-free vulnerability in the Linux kernel Multipath TCP (MPTCP) path manager. Concurrent packet-processing and Generic Netlink address-flush paths can both reach mptcp_pm_del_add_timer. The address-removal path can release an address-list entry after leaving the pm.lock-protected critical section while another CPU subsequently dereferences the entry's add_timer member during synchronized timer deletion. The fix retains the timer reference while holding pm.lock, uses that retained reference for sk_stop_timer_sync(), and moves list removal into mptcp_pm_del_add_timer under the lock, preventing entry member accesses outside the protected region.
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Linux kernel MPTCP path-manager use-after-free vulnerability in __timer_delete_sync.
A use-after-free vulnerability in the Linux kernel MPTCP path manager involving __timer_delete_sync.
Use-after-free vulnerability in the Linux kernel MPTCP path manager involving __timer_delete_sync().
Use-after-free vulnerability in the Linux kernel Multipath TCP path manager involving __timer_delete_sync.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
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