Answer in brief
CVE-2026-89636 records a Critical severity (CVSS 9.8) vulnerability in smb: client: clear ce->tgthint in free_tgts(). 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.
CVSS is 9.8. 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 | >=54be1f6c1c37498bba557049df646cc239fa37e3 <7507bd1885643d0461a6017767492450af1ce2a3 || >=54be1f6c1c37498bba557049df646cc239fa37e3 <9ab46a13798a61d9d020b01d4e57efdabe6624fa || >=54be1f6c1c37498bba557049df646cc239fa37e3 <5baab40404a9393bcc0b7b8f1950bf2c307e0984 || >=54be1f6c1c37498bba557049df646cc239fa37e3 <b1b741cf8e7ce1b91d937e23decd3d3358748700 | 7507bd1885643d0461a6017767492450af1ce2a3, 9ab46a13798a61d9d020b01d4e57efdabe6624fa, 5baab40404a9393bcc0b7b8f1950bf2c307e0984, b1b741cf8e7ce1b91d937e23decd3d3358748700 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Linux/Linuxgeneric | >=54be1f6c1c37498bba557049df646cc239fa37e3 <14f60e959b5ac813715ff72e127beb3584ddabf6 || >=54be1f6c1c37498bba557049df646cc239fa37e3 <3ff9462bb7a06d8d32a1dc02d39580b078ec9e55 || >=54be1f6c1c37498bba557049df646cc239fa37e3 <7507bd1885643d0461a6017767492450af1ce2a3 || >=54be1f6c1c37498bba557049df646cc239fa37e3 <9ab46a13798a61d9d020b01d4e57efdabe6624fa || >=54be1f6c1c37498bba557049df646cc239fa37e3 <5baab40404a9393bcc0b7b8f1950bf2c307e0984 || >=54be1f6c1c37498bba557049df646cc239fa37e3 <b1b741cf8e7ce1b91d937e23decd3d3358748700 | 14f60e959b5ac813715ff72e127beb3584ddabf6, 3ff9462bb7a06d8d32a1dc02d39580b078ec9e55, 7507bd1885643d0461a6017767492450af1ce2a3, 9ab46a13798a61d9d020b01d4e57efdabe6624fa, 5baab40404a9393bcc0b7b8f1950bf2c307e0984, b1b741cf8e7ce1b91d937e23decd3d3358748700 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
In the Linux kernel, the following vulnerability has been resolved: smb: client: clear ce->tgthint in free_tgts() When free_tgts() frees all structures in ce->tlist, ce->tgthint is left pointing to one of the freed cache_dfs_tgt structures. If ce->tgthint is not reset before it is used later, it results in a use-after-free. Set ce->tgthint to NULL in free_tgts() after the elements are freed to reflect that no elements remain.
Quoted source text, attributed separately from HOL analysis.