Description
In the Linux kernel, the following vulnerability has been resolved: arm64: mops: Do not dereference src reg for a set operation The source register is not used for SET* and reading it can result in a UBSAN out-of-bounds array access error, specifically when the MOPS exception is taken from a SET* sequence with XZR (reg 31) as the source. Architecturally this is the only case where a src/dst/size field in the ESR can be reported as 31. Prior to 2de451a329cf662b the code in do_el0_mops() was benign as the use of pt_regs_read_reg() prevented the out-of-bounds access.
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
2de451a329cf662beeba71f63c7f83ee24ca6642 to < eec737e17e5567e08148550a7f1d94d495b9fb17affected2de451a329cf662beeba71f63c7f83ee24ca6642 to < 43267d934eacff6c70e15545d804ebbcab8a0bf5affected2de451a329cf662beeba71f63c7f83ee24ca6642 to < 5f6022a74147675124b781fdc056b291850e7786affected2de451a329cf662beeba71f63c7f83ee24ca6642 to < a13bfa4fe0d6949cea14718df2d1fe84c38cd113affected
Linux Linux
Default version status: affected
6.7affected0 to < 6.7unaffected6.12.24 to ≤ 6.12.*unaffected6.13.12 to ≤ 6.13.*unaffected6.14.3 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected