Answer in brief
CVE-2026-43411 records a Unknown severity vulnerability in tipc: fix divide-by-zero in tipc_sk_filter_connect(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6787927475e52f6933e3affce365dabb2aa2fadf <600feb0a66a98c6b7f6f02b5f3612e75f9b8540f || >=6787927475e52f6933e3affce365dabb2aa2fadf <3bc9998041076ee05d3f312a22cee6b2ca35527f || >=6787927475e52f6933e3affce365dabb2aa2fadf <579956f9f297eb1b6a5d24de313f3acccee1f9d5 || >=6787927475e52f6933e3affce365dabb2aa2fadf <a360d3815aae1f00dd71b7714a846482e85cc1f7 || >=6787927475e52f6933e3affce365dabb2aa2fadf <c2ebfbe63deb7bfd4dc2532bae62a7ed67713272 || >=6787927475e52f6933e3affce365dabb2aa2fadf <2754e7b3d64748643df867d1ea6fec522914b635 || >=6787927475e52f6933e3affce365dabb2aa2fadf <338c5edeb6ae3f12a4b84dff9d71f6f7f8c202c3 || >=6787927475e52f6933e3affce365dabb2aa2fadf <6c5a9baa15de240e747263aba435a0951da8d8d2 | 600feb0a66a98c6b7f6f02b5f3612e75f9b8540f, 3bc9998041076ee05d3f312a22cee6b2ca35527f, 579956f9f297eb1b6a5d24de313f3acccee1f9d5, a360d3815aae1f00dd71b7714a846482e85cc1f7, c2ebfbe63deb7bfd4dc2532bae62a7ed67713272, 2754e7b3d64748643df867d1ea6fec522914b635, 338c5edeb6ae3f12a4b84dff9d71f6f7f8c202c3, 6c5a9baa15de240e747263aba435a0951da8d8d2 |
| Linux/Linuxgeneric | 4.20 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 6, 2026
In the Linux kernel, the following vulnerability has been resolved: tipc: fix divide-by-zero in tipc_sk_filter_connect() A user can set conn_timeout to any value via setsockopt(TIPC_CONN_TIMEOUT), including values less than 4. When a SYN is rejected with TIPC_ERR_OVERLOAD and the retry path in tipc_sk_filter_connect() executes: delay %= (tsk->conn_timeout / 4); If conn_timeout is in the range [0, 3], the integer division yields 0, and the modulo operation triggers a divide-by-zero exception, causing a kernel oops/panic. Fix this by clamping conn_timeout to a minimum of 4 at the point of use in tipc_sk_filter_connect(). Oops: divide error: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 119 Comm: poc-F144 Not tainted 7.0.0-rc2+ RIP: 0010:tipc_sk_filter_rcv (net/tipc/socket.c:2236 net/tipc/socket.c:2362) Call Trace: tipc_sk_backlog_rcv (include/linux/instrumented.h:82 include/linux/atomic/atomic-instrumented.h:32 include/net/sock.h:2357 net/tipc/socket.c:2406) __release_sock (include/net/sock.h:1185 net/core/sock.c:3213) release_sock (net/core/sock.c:3797) tipc_connect (net/tipc/socket.c:2570) __sys_connect (include/linux/file.h:62 include/linux/file.h:83 net/socket.c:2098)
Quoted source text, attributed separately from HOL analysis.