Description
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Do not complete a failed ESE read as successful dasd_int_handler() completes an NRF read of an unallocated ESE track by calling ese_read() and unconditionally marking the request DASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has zeroed the destination buffer: a failed sense-data parse or a current track outside the requested range both return early, leaving the destination pages untouched. The request is still completed successfully, so the block layer is handed stale / uninitialized memory instead of zeros. Check the ese_read() return value and fail the request through the normal error path instead of forcing DASD_CQR_SUCCESS.
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
5e6bdd37c5526ef01326df5dabb93011ee89237e to < 8cb96cffceead3cbd0541154d7ecc5e6474edda1affected5e6bdd37c5526ef01326df5dabb93011ee89237e to < 77168af195d04b34c6de62b874624e74d64cef8daffected5e6bdd37c5526ef01326df5dabb93011ee89237e to < 921ff697bb6f7067059793becf8b2d00de71ce41affected5e6bdd37c5526ef01326df5dabb93011ee89237e to < 55f4df40178cdfede0d7ae848fbab00efa9b95c1affected5e6bdd37c5526ef01326df5dabb93011ee89237e to < c9adf8399732306dfc97b3adb4778038743e3f5eaffected5e6bdd37c5526ef01326df5dabb93011ee89237e to < 52b331c99baac653ca794bd8487c8ec4de8db203affected5e6bdd37c5526ef01326df5dabb93011ee89237e to < b0d94dd6e82df396e2254c8b0f25eff7d19c2e7faffected5e6bdd37c5526ef01326df5dabb93011ee89237e to < cddb447c62466f3076938ce120028d7b591f9f37affectedfbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04affected5f7c9989f11305aaa43e0f4378f4f070022a9f2baffected5.4.26 to < 5.5affected5.5.10 to < 5.6affected
Linux Linux
Default version status: affected
5.6affected0 to < 5.6unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.109 to ≤ 6.12.*unaffected6.18.50 to ≤ 6.18.*unaffected7.2.4 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/8cb96cffceead3cbd0541154d7ecc5e6474edda1 ↗
- https://git.kernel.org/stable/c/77168af195d04b34c6de62b874624e74d64cef8d ↗
- https://git.kernel.org/stable/c/921ff697bb6f7067059793becf8b2d00de71ce41 ↗
- https://git.kernel.org/stable/c/55f4df40178cdfede0d7ae848fbab00efa9b95c1 ↗
- https://git.kernel.org/stable/c/c9adf8399732306dfc97b3adb4778038743e3f5e ↗
- https://git.kernel.org/stable/c/52b331c99baac653ca794bd8487c8ec4de8db203 ↗
- https://git.kernel.org/stable/c/b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f ↗
- https://git.kernel.org/stable/c/cddb447c62466f3076938ce120028d7b591f9f37 ↗