Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before 8cb96cffceead3cbd0541154d7ecc5e6474edda1; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before 77168af195d04b34c6de62b874624e74d64cef8d; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before 921ff697bb6f7067059793becf8b2d00de71ce41; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before 55f4df40178cdfede0d7ae848fbab00efa9b95c1; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before c9adf8399732306dfc97b3adb4778038743e3f5e; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before 52b331c99baac653ca794bd8487c8ec4de8db203; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f; affected 5e6bdd37c5526ef01326df5dabb93011ee89237e before cddb447c62466f3076938ce120028d7b591f9f37; affected fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04; affected 5f7c9989f11305aaa43e0f4378f4f070022a9f2b; affected 5.4.26 before 5.5; affected 5.5.10 before 5.6 |
| Linux / Linux | affected 5.6; unaffected 0 before 5.6; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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