Answer in brief
CVE-2026-45972 records a Critical severity (CVSS 9.8) vulnerability in smb: client: fix potential UAF and double free in smb2_open_file(). 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-2026-45972 records a Critical severity (CVSS 9.8) vulnerability in smb: client: fix potential UAF and double free in smb2_open_file(). 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.
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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=743f70406264348c0830f38409eb6c40a42fb2db <96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74 || >=3a6d6b332f92990958602c1e35ce0173e2dd62e9 <7425453ea16dbc3bbb0f6cac4d60b537e5e4d151 || >=b64e3b5d8d759dd4333992e4ba4dadf9359952c8 <4d339b219004869e96c4ce56b8891f83a38da4c0 || >=9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5 <e66dcf7bb9c4df5582c82bc3582725abcbfbea73 || >=e3a43633023e3cacaca60d4b8972d084a2b06236 <639deb962986ef2f5e2a6d5a600c66f922471e81 || >=e3a43633023e3cacaca60d4b8972d084a2b06236 <ebbbc4bfad4cb355d17c671223d0814ee3ef4eda || >=6.1.163 <6.1.165 || >=6.6.124 <6.6.128 || >=6.12.70 <6.12.75 || >=6.18.10 <6.18.14 | 96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74, 7425453ea16dbc3bbb0f6cac4d60b537e5e4d151, 4d339b219004869e96c4ce56b8891f83a38da4c0, e66dcf7bb9c4df5582c82bc3582725abcbfbea73, 639deb962986ef2f5e2a6d5a600c66f922471e81, ebbbc4bfad4cb355d17c671223d0814ee3ef4eda, 6.1.165, 6.6.128, 6.12.75, 6.18.14 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.
Quoted source text, attributed separately from HOL analysis.
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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=743f70406264348c0830f38409eb6c40a42fb2db <96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74 || >=3a6d6b332f92990958602c1e35ce0173e2dd62e9 <7425453ea16dbc3bbb0f6cac4d60b537e5e4d151 || >=b64e3b5d8d759dd4333992e4ba4dadf9359952c8 <4d339b219004869e96c4ce56b8891f83a38da4c0 || >=9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5 <e66dcf7bb9c4df5582c82bc3582725abcbfbea73 || >=e3a43633023e3cacaca60d4b8972d084a2b06236 <639deb962986ef2f5e2a6d5a600c66f922471e81 || >=e3a43633023e3cacaca60d4b8972d084a2b06236 <ebbbc4bfad4cb355d17c671223d0814ee3ef4eda || >=6.1.163 <6.1.165 || >=6.6.124 <6.6.128 || >=6.12.70 <6.12.75 || >=6.18.10 <6.18.14 | 96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74, 7425453ea16dbc3bbb0f6cac4d60b537e5e4d151, 4d339b219004869e96c4ce56b8891f83a38da4c0, e66dcf7bb9c4df5582c82bc3582725abcbfbea73, 639deb962986ef2f5e2a6d5a600c66f922471e81, ebbbc4bfad4cb355d17c671223d0814ee3ef4eda, 6.1.165, 6.6.128, 6.12.75, 6.18.14 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.
Quoted source text, attributed separately from HOL analysis.