curl: Heap use-after-free (write) in mev_forget_socket() via reentrant curl_easy_pause() — incomplete fix for CVE-2026-9080

lib/multiev.c keeps a hash table multi-ev.shentries of per-socket bookkeeping structs struct mevshentry used to decide when to notify the application's socket callback CURLMOPTSOCKETFUNCTION about interest changes on a socket. CVE-2026-9080 "multi: handle pause in multi socket callback", commit...

curl: UAF read in mev_pollset_diff() trace path after curl_easy_pause() in socket callback

Summary: The CVE-2026-9080 fix re-fetches the shentry after the socket callback inside mevshentryupdate, because curleasypause called from that callback re-enters mevassess and can free the entry. The same re-fetch was not applied at the caller, mevpollsetdiff, which dereferences its own entry...

curl: Use-after-free in `mev_forget_socket` when `curl_easy_pause()` is called from a `CURL_POLL_REMOVE` socket callback (incomplete fix of CVE-2026-9080)

Summary libcurl's event interface lets the application's socket callback CURLMOPTSOCKETFUNCTION call curleasypause. CVE-2026-9080 was issued for a use-after-free that this triggers, and the fix added a post-callback re-fetch of the socket-hash entry in the UPDATE leg mevshentryupdate,...

GSD-2023-1000247 tipc: re-fetch skb cb after tipc_msg_validate

tipc: re-fetch skb cb after tipcmsgvalidate This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.158 by commit...

GSD-2022-1003929 netfilter: conntrack: re-fetch conntrack after insertion

netfilter: conntrack: re-fetch conntrack after insertion This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.246 by commit...

GSD-2022-1003813 netfilter: conntrack: re-fetch conntrack after insertion

netfilter: conntrack: re-fetch conntrack after insertion This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.197 by commit...

GSD-2022-1003656 netfilter: conntrack: re-fetch conntrack after insertion

netfilter: conntrack: re-fetch conntrack after insertion This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.120 by commit...

GSD-2022-1003453 netfilter: conntrack: re-fetch conntrack after insertion

netfilter: conntrack: re-fetch conntrack after insertion This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.45 by commit...

PT-2022-32076

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.4.197 Description The issue is related to netfilter: conntrack, where a re-fetch of conntrack after insertion is required. The actual impact and attack plausibility have not yet been proven. Recommendations Fo...