Answer in brief
CVE-2026-98625 records a Unknown severity vulnerability in netfilter: flowtable: publish HW_DEAD after worker is done. 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 | >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <f92e8f39726ba68a7c42c6b7566be687c8161579 || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <00e452a7ca9fda135ea3d04a11128d5088e354a8 || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <56f39c7d139bb76072efe2fb3dcafc13ba915ad8 || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <e20701843032c438f879066a77ea85e361c6b999 || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <b4f0f05dfbe836a171bff261f17d098a4d5461ea || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <b0ef9450e93f2adeb77593db14c2ac7c6c8f5060 || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <f26652e99f519e6bd34f8a9b48fbb33c603585f2 || >=2c8897953f3b2ff5498f3f275708a742bfcdbc24 <d644b23afe1ef509c9961a6d84a093c2587edf02 | f92e8f39726ba68a7c42c6b7566be687c8161579, 00e452a7ca9fda135ea3d04a11128d5088e354a8, 56f39c7d139bb76072efe2fb3dcafc13ba915ad8, e20701843032c438f879066a77ea85e361c6b999, b4f0f05dfbe836a171bff261f17d098a4d5461ea, b0ef9450e93f2adeb77593db14c2ac7c6c8f5060, f26652e99f519e6bd34f8a9b48fbb33c603585f2, d644b23afe1ef509c9961a6d84a093c2587edf02 |
| Linux/Linuxgeneric | 5.7 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: publish HW_DEAD after worker is done flow_offload_work_del() sets NF_FLOW_HW_DEAD before the work handler clears NF_FLOW_HW_PENDING. Once a flow is both HW_DYING and HW_DEAD, a concurrent garbage collection pass can remove it and schedule it for RCU freeing. The offload worker holds neither an RCU read lock nor a reference to the flow. If it is preempted after publishing HW_DEAD, the RCU callback can free the flow before the worker resumes and clears HW_PENDING, resulting in a use-after-free. Move HW_DEAD publication to the common worker epilogue after the pending bit is cleared, making it the final flow access by destroy work. Order all preceding flow accesses before publishing the bit that allows garbage collection to free the object.
Quoted source text, attributed separately from HOL analysis.