CVE-2024-58068: OPP: fix dev_pm_opp_find_bw_*() when bandwidth table not initialized

Description

In the Linux kernel, the following vulnerability has been resolved: OPP: fix dev_pm_opp_find_bw_*() when bandwidth table not initialized If a driver calls dev_pm_opp_find_bw_ceil/floor() the retrieve bandwidth from the OPP table but the bandwidth table was not created because the interconnect properties were missing in the OPP consumer node, the kernel will crash with: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004 ... pc : _read_bw+0x8/0x10 lr : _opp_table_find_key+0x9c/0x174 ... Call trace: _read_bw+0x8/0x10 (P) _opp_table_find_key+0x9c/0x174 (L) _find_key+0x98/0x168 dev_pm_opp_find_bw_ceil+0x50/0x88 ... In order to fix the crash, create an assert function to check if the bandwidth table was created before trying to get a bandwidth with _read_bw().

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

add1dc094a7456d3c56782b7478940b6a550c7ed to < 8532fd078d2a5286915d03bb0a0893ee1955acefaffected
add1dc094a7456d3c56782b7478940b6a550c7ed to < 84ff05c9bd577157baed711a4f0b41206593978baffected
add1dc094a7456d3c56782b7478940b6a550c7ed to < ff2def251849133be6076a7c2d427d8eb963c223affected
add1dc094a7456d3c56782b7478940b6a550c7ed to < 5165486681dbd67b61b975c63125f2a5cb7f96d1affected
add1dc094a7456d3c56782b7478940b6a550c7ed to < b44b9bc7cab2967c3d6a791b1cd542c89fc07f0eaffected

Linux Linux

Default version status: affected

6.0affected
0 to < 6.0unaffected
6.1.129 to ≤ 6.1.*unaffected
6.6.76 to ≤ 6.6.*unaffected
6.12.13 to ≤ 6.12.*unaffected
6.13.2 to ≤ 6.13.*unaffected
6.14 to ≤ *unaffected

CVE-2024-58068

OPP: fix dev_pm_opp_find_bw_*() when bandwidth table not initialized

Description

Affected products

Linux Linux

Linux Linux

References