Answer in brief
CVE-2026-98708 records a Unknown severity vulnerability in wifi: mac80211: keep paired old chanctx alive. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <1c82d0c5d509179ba2a4edfa096f516aebf960b0 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <afd1cdd16a25c7185b812a612ab7d5f2cbd1e086 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <3412e9a800786d1dec4a58367db1cba275e7ef11 | 21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2, 1c82d0c5d509179ba2a4edfa096f516aebf960b0, afd1cdd16a25c7185b812a612ab7d5f2cbd1e086, 3412e9a800786d1dec4a58367db1cba275e7ef11 |
| Linux/Linuxgeneric | 3.17 | Not reported |
| Linux/Linuxgeneric | >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <47864a9092fd6f6b3f312d1e5b233ecdc68b1bd8 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <1c82d0c5d509179ba2a4edfa096f516aebf960b0 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <afd1cdd16a25c7185b812a612ab7d5f2cbd1e086 || >=5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f <3412e9a800786d1dec4a58367db1cba275e7ef11 | 47864a9092fd6f6b3f312d1e5b233ecdc68b1bd8, 21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2, 1c82d0c5d509179ba2a4edfa096f516aebf960b0, afd1cdd16a25c7185b812a612ab7d5f2cbd1e086, 3412e9a800786d1dec4a58367db1cba275e7ef11 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 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: wifi: mac80211: keep paired old chanctx alive An in-place replacement keeps reciprocal replace_ctx pointers between the old WILL_BE_REPLACED chanctx and the new REPLACES_OTHER chanctx. However, the early free paths only consider assigned and reserved link users when deciding whether to free the old chanctx. That lets the old chanctx be freed too early while the replacement partner still points back to it, either when the last assigned link is released or when that link successfully reassigns to another existing context. Later unreserve and switch-finalization paths can then follow a stale replace_ctx pointer. Keep a paired old chanctx alive until the replacement pair has been torn down. Apply the same check to both __ieee80211_link_release_channel() and ieee80211_link_use_reserved_reassign(). If the replacement is later abandoned, ieee80211_link_unreserve_chanctx() already tears down the pairing before freeing the old chanctx once no users remain.
Quoted source text, attributed separately from HOL analysis.