CVE-2024-42099

Published: July 31, 2024Last modified: July 31, 2024

Description

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Fix invalid dereferencing of indirect CCW data pointer Fix invalid dereferencing of indirect CCW data pointer in dasd_eckd_dump_sense() that leads to a kernel panic in error cases. When using indirect addressing for DASD CCWs (IDAW) the CCW CDA pointer does not contain the data address itself but a pointer to the IDAL. This needs to be translated from physical to virtual as well before using it. This dereferencing is also used for dasd_page_cache and also fixed although it is very unlikely that this code path ever gets used.

Status

References

• https://git.kernel.org/stable/c/b3a58f3b90f564f42a5c35778d8c5107b2c2150b
• https://git.kernel.org/stable/c/c116475f7d6410b1e6d399207ac75de6cf9c3652