Answer in brief
CVE-2023-53990 records a High severity (CVSS 7.8) vulnerability in SMB3: Add missing locks to protect deferred close file list. 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 7.8. 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 | >=860efae127888ae535bc4eda1b7f27642727c69e <0f87e18203bd30f71eb1a65259e28e291b6cc43a || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <3aa9d065b0685b4e6052f3f2a2462966fdc44fd2 || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <cb36365dac25d546ca4af0eb22acb43c9b4ddfdf || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <32a046ccaeea6c19965c04a4c521e703f6607924 || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <ab9ddc87a9055c4bebd6524d5d761d605d52e557 || 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 || >=5.15.63 <5.15.111 || >=5.19.4 <5.20 | 0f87e18203bd30f71eb1a65259e28e291b6cc43a, 3aa9d065b0685b4e6052f3f2a2462966fdc44fd2, cb36365dac25d546ca4af0eb22acb43c9b4ddfdf, 32a046ccaeea6c19965c04a4c521e703f6607924, ab9ddc87a9055c4bebd6524d5d761d605d52e557, 5.15.111, 5.20 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-53990 records a High severity (CVSS 7.8) vulnerability in SMB3: Add missing locks to protect deferred close file list. 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 7.8. 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 | >=860efae127888ae535bc4eda1b7f27642727c69e <0f87e18203bd30f71eb1a65259e28e291b6cc43a || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <3aa9d065b0685b4e6052f3f2a2462966fdc44fd2 || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <cb36365dac25d546ca4af0eb22acb43c9b4ddfdf || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <32a046ccaeea6c19965c04a4c521e703f6607924 || >=ca08d0eac020d48a3141dbec0a3cf64fbdb17cde <ab9ddc87a9055c4bebd6524d5d761d605d52e557 || 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 || >=5.15.63 <5.15.111 || >=5.19.4 <5.20 | 0f87e18203bd30f71eb1a65259e28e291b6cc43a, 3aa9d065b0685b4e6052f3f2a2462966fdc44fd2, cb36365dac25d546ca4af0eb22acb43c9b4ddfdf, 32a046ccaeea6c19965c04a4c521e703f6607924, ab9ddc87a9055c4bebd6524d5d761d605d52e557, 5.15.111, 5.20 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.
Quoted source text, attributed separately from HOL analysis.