Answer in brief
CVE-2023-53055 records a Medium severity (CVSS 5.5) vulnerability in fscrypt: destroy keyring after security_sb_delete(). 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 5.5. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e6f4fd85ef1ee6ab356bfbd64df28c1cb73aee7e <992a3f3e8a0c92151dfdf65fc85567c865fd558a || >=d7e7b9af104c7b389a0c21eb26532511bce4b510 <d77531fac6a1fd9f1db0195438ba5419d72b96c4 || >=d7e7b9af104c7b389a0c21eb26532511bce4b510 <497ab5d9c7852dfedab2c9de75e41b60e54b7c5d || >=d7e7b9af104c7b389a0c21eb26532511bce4b510 <ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a || 391cceee6d435e616f68631e68f5b32d480b1e67 || 68d15d6558a386f46d815a6ac39edecad713a1bf || >=5.15.78 <5.15.105 || >=5.10.154 <5.11 || >=6.0.8 <6.1 | 992a3f3e8a0c92151dfdf65fc85567c865fd558a, d77531fac6a1fd9f1db0195438ba5419d72b96c4, 497ab5d9c7852dfedab2c9de75e41b60e54b7c5d, ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a, 5.15.105, 5.11, 6.1 |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
May 2, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: fscrypt: destroy keyring after security_sb_delete() fscrypt_destroy_keyring() must be called after all potentially-encrypted inodes were evicted; otherwise it cannot safely destroy the keyring. Since inodes that are in-use by the Landlock LSM don't get evicted until security_sb_delete(), this means that fscrypt_destroy_keyring() must be called *after* security_sb_delete(). This fixes a WARN_ON followed by a NULL dereference, only possible if Landlock was being used on encrypted files.
Quoted source text, attributed separately from HOL analysis.