CVE-2025-40242
High
Description
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.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux
PublishedDec 4, 2025
First seenDec 4, 2025
How to fix
Update
- Linux Linux5fdc1474e678eea1700aa266c0b7c2c96f81dd0d, 4913592a3358f6ec366b8346b733d5e2360b08e1, 279bde3bbb0ac0bad5c729dfa85983d75a5d7641, 64c61b4ac645222fa7b724cef616c1f862a72a40, 28c4d9bc0708956c1a736a9e49fee71b65deee81, 4.5, 4.10, 4.15, 4.20, 5.5, 5.11, 5.14, 5.15 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | d1340f80f0b8066321b499a376780da00560e857 ≤ v < 5fdc1474e678eea1700aa266c0b7c2c96f81dd0d, d1340f80f0b8066321b499a376780da00560e857 ≤ v < 4913592a3358f6ec366b8346b733d5e2360b08e1, d1340f80f0b8066321b499a376780da00560e857 ≤ v < 279bde3bbb0ac0bad5c729dfa85983d75a5d7641, d1340f80f0b8066321b499a376780da00560e857 ≤ v < 64c61b4ac645222fa7b724cef616c1f862a72a40, d1340f80f0b8066321b499a376780da00560e857 ≤ v < 28c4d9bc0708956c1a736a9e49fee71b65deee81, 6aa628c45875e7b8cca81ed9447a12a0e8f3504a, a97e75203733be0a4263a78fb7b29352be150c1c, 3554b46204e67333e1fb8be0e93936fb08267c80, 5cff77b9827a956d076168b56775aad23bce87e4, 8deedce385d220f90e435f534d71d27526273515, 2225a5cd2fbc2ef0e0f78e585db3844f60416a39, 02e838963fdaa6ce8570b5389aecdc6cf1fb40b0, 01eb3106f43335fdc02111358dae80a5c3fd324d, 4.4.284 ≤ v < 4.5, 4.9.283 ≤ v < 4.10, 4.14.247 ≤ v < 4.15, 4.19.207 ≤ v < 4.20, 5.4.148 ≤ v < 5.5, 5.10.67 ≤ v < 5.11, 5.13.19 ≤ v < 5.14, 5.14.6 ≤ v < 5.15, 5.15 | 5fdc1474e678eea1700aa266c0b7c2c96f81dd0d, 4913592a3358f6ec366b8346b733d5e2360b08e1, 279bde3bbb0ac0bad5c729dfa85983d75a5d7641, 64c61b4ac645222fa7b724cef616c1f862a72a40, 28c4d9bc0708956c1a736a9e49fee71b65deee81, 4.5, 4.10, 4.15, 4.20, 5.5, 5.11, 5.14, 5.15 |
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