Answer in brief
CVE-2025-40242 records a High severity (CVSS 7.0) vulnerability in gfs2: Fix unlikely race in gdlm_put_lock. 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 7.0. 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 | >=d1340f80f0b8066321b499a376780da00560e857 <5fdc1474e678eea1700aa266c0b7c2c96f81dd0d || >=d1340f80f0b8066321b499a376780da00560e857 <4913592a3358f6ec366b8346b733d5e2360b08e1 || >=d1340f80f0b8066321b499a376780da00560e857 <279bde3bbb0ac0bad5c729dfa85983d75a5d7641 || >=d1340f80f0b8066321b499a376780da00560e857 <64c61b4ac645222fa7b724cef616c1f862a72a40 || >=d1340f80f0b8066321b499a376780da00560e857 <28c4d9bc0708956c1a736a9e49fee71b65deee81 || 6aa628c45875e7b8cca81ed9447a12a0e8f3504a || a97e75203733be0a4263a78fb7b29352be150c1c || 3554b46204e67333e1fb8be0e93936fb08267c80 || 5cff77b9827a956d076168b56775aad23bce87e4 || 8deedce385d220f90e435f534d71d27526273515 || 2225a5cd2fbc2ef0e0f78e585db3844f60416a39 || 02e838963fdaa6ce8570b5389aecdc6cf1fb40b0 || 01eb3106f43335fdc02111358dae80a5c3fd324d || >=4.4.284 <4.5 || >=4.9.283 <4.10 || >=4.14.247 <4.15 || >=4.19.207 <4.20 || >=5.4.148 <5.5 || >=5.10.67 <5.11 || >=5.13.19 <5.14 || >=5.14.6 <5.15 | 5fdc1474e678eea1700aa266c0b7c2c96f81dd0d, 4913592a3358f6ec366b8346b733d5e2360b08e1, 279bde3bbb0ac0bad5c729dfa85983d75a5d7641, 64c61b4ac645222fa7b724cef616c1f862a72a40, 28c4d9bc0708956c1a736a9e49fee71b65deee81, 4.5, 4.10, 4.15, 4.20, 5.5, 5.11, 5.14, 5.15 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Dec 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix unlikely race in gdlm_put_lock In gdlm_put_lock(), there is a small window of time in which the DFL_UNMOUNT flag has been set but the lockspace hasn't been released, yet. In that window, dlm may still call gdlm_ast() and gdlm_bast(). To prevent it from dereferencing freed glock objects, only free the glock if the lockspace has actually been released.
Quoted source text, attributed separately from HOL analysis.