Description
In the Linux kernel, the following vulnerability has been resolved:
s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup pointer being NULL.
The pavgroup pointer is checked on the entrance of the function but without the lcu->lock being held. Therefore there is a race window between dasd_alias_get_start_dev() and _lcu_update() which sets pavgroup to NULL with the lcu->lock held.
Fix by checking the pavgroup pointer with lcu->lock held.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < d86b4267834e6d4af62e3073e48166e349ab1b70; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < 49f401a98b318761ca2e15d4c7869a20043fbed4; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < aaba5ff2742043705bc4c02fd0b2b246e2e16da1; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < 2e473351400e3dd66f0b71eddcef82ee45a584c1; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < d3a67c21b18f33c79382084af556557c442f12a6; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < 650a2e79d176db753654d3dde88e53a2033036ac; >= 8e09f21574ea3028d5629e5de759e0b196c690c5, < db7ba07108a48c0f95b74fabbfd5d63e924f992d |
| Linux | Linux | 2.6.25 |
References
- https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1Patch
- https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4Patch
- https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036acPatch
- https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1Patch
- https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6Patch
- https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70Patch
- https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992dPatch
- https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20bPatch
- https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1Patch
- https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4Patch
- https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036acPatch
- https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1Patch
- https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6Patch
- https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70Patch
- https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992dPatch
- https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20bPatch
Timeline
- Published
- Apr 28, 2024
- Last modified
- Aug 4, 2026
- NVD status
- Modified