Answer in brief
CVE-2026-72492 records a Unknown severity vulnerability in ksmbd: fix use-after-free in same_client_has_lease(). 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.
Answer in brief
CVE-2026-72492 records a Unknown severity vulnerability in ksmbd: fix use-after-free in same_client_has_lease(). 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 | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <aaa3bb2bbf2ccbfea9e4e0b9dabf3afc60b50cd0 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <09634cd055d9bd8dd167995ea52bcd8028dd5dac || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <7c3264d273d524aa6adcce23c01087271f13586f || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <79c7c59bb519db6f5a2a151965e825ec725614cc || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <35d3d6ff2bc1e7aaecb15d5377ebbd6227acae0d || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <0ff82a9cf9312678d8bc4edeef0b6e82659ac12a || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <65b655f65c3ca1ab5d598d3832bb0ff531725858 | aaa3bb2bbf2ccbfea9e4e0b9dabf3afc60b50cd0, 09634cd055d9bd8dd167995ea52bcd8028dd5dac, 7c3264d273d524aa6adcce23c01087271f13586f, 79c7c59bb519db6f5a2a151965e825ec725614cc, 35d3d6ff2bc1e7aaecb15d5377ebbd6227acae0d, 0ff82a9cf9312678d8bc4edeef0b6e82659ac12a, 65b655f65c3ca1ab5d598d3832bb0ff531725858 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in same_client_has_lease() same_client_has_lease() returns an opinfo pointer from ci->m_op_list after dropping ci->m_lock without taking a reference. smb_grant_oplock() then dereferences that pointer in copy_lease() and when checking breaking_cnt. A concurrent close can remove the old lease from ci->m_op_list and drop the last reference before the caller uses the returned pointer, leading to a use-after-free. Take a reference when same_client_has_lease() selects an existing lease, drop any previous match while scanning, and release the returned reference in smb_grant_oplock() after copying the lease state.
Quoted source text, attributed separately from HOL analysis.
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 | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <aaa3bb2bbf2ccbfea9e4e0b9dabf3afc60b50cd0 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <09634cd055d9bd8dd167995ea52bcd8028dd5dac || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <7c3264d273d524aa6adcce23c01087271f13586f || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <79c7c59bb519db6f5a2a151965e825ec725614cc || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <35d3d6ff2bc1e7aaecb15d5377ebbd6227acae0d || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <0ff82a9cf9312678d8bc4edeef0b6e82659ac12a || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <65b655f65c3ca1ab5d598d3832bb0ff531725858 | aaa3bb2bbf2ccbfea9e4e0b9dabf3afc60b50cd0, 09634cd055d9bd8dd167995ea52bcd8028dd5dac, 7c3264d273d524aa6adcce23c01087271f13586f, 79c7c59bb519db6f5a2a151965e825ec725614cc, 35d3d6ff2bc1e7aaecb15d5377ebbd6227acae0d, 0ff82a9cf9312678d8bc4edeef0b6e82659ac12a, 65b655f65c3ca1ab5d598d3832bb0ff531725858 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in same_client_has_lease() same_client_has_lease() returns an opinfo pointer from ci->m_op_list after dropping ci->m_lock without taking a reference. smb_grant_oplock() then dereferences that pointer in copy_lease() and when checking breaking_cnt. A concurrent close can remove the old lease from ci->m_op_list and drop the last reference before the caller uses the returned pointer, leading to a use-after-free. Take a reference when same_client_has_lease() selects an existing lease, drop any previous match while scanning, and release the returned reference in smb_grant_oplock() after copying the lease state.
Quoted source text, attributed separately from HOL analysis.