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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
8e09f21574ea3028d5629e5de759e0b196c690c5 to < d86b4267834e6d4af62e3073e48166e349ab1b70affected8e09f21574ea3028d5629e5de759e0b196c690c5 to < 49f401a98b318761ca2e15d4c7869a20043fbed4affected8e09f21574ea3028d5629e5de759e0b196c690c5 to < aaba5ff2742043705bc4c02fd0b2b246e2e16da1affected8e09f21574ea3028d5629e5de759e0b196c690c5 to < 2e473351400e3dd66f0b71eddcef82ee45a584c1affected8e09f21574ea3028d5629e5de759e0b196c690c5 to < f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20baffected8e09f21574ea3028d5629e5de759e0b196c690c5 to < d3a67c21b18f33c79382084af556557c442f12a6affected8e09f21574ea3028d5629e5de759e0b196c690c5 to < 650a2e79d176db753654d3dde88e53a2033036acaffected8e09f21574ea3028d5629e5de759e0b196c690c5 to < db7ba07108a48c0f95b74fabbfd5d63e924f992daffected
Linux Linux
Default version status: affected
2.6.25affected0 to < 2.6.25unaffected4.9.330 to ≤ 4.9.*unaffected4.14.295 to ≤ 4.14.*unaffected4.19.260 to ≤ 4.19.*unaffected5.4.215 to ≤ 5.4.*unaffected5.10.146 to ≤ 5.10.*unaffected5.15.71 to ≤ 5.15.*unaffected5.19.12 to ≤ 5.19.*unaffected6.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70 ↗
- https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4 ↗
- https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1 ↗
- https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1 ↗
- https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b ↗
- https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6 ↗
- https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac ↗
- https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d ↗