Description
In the Linux kernel, the following vulnerability has been resolved: platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. mlxbf_pmc_probe() passes the result of ACPI_COMPANION() to acpi_device_hid(), which dereferences it, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. Accordingly, add a requisite ACPI_COMPANION() check against NULL to the mlxbf-pmc driver and return -ENODEV when the companion is missing.
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
1a218d312e65ec396b2739056a8ea78493015f21 to < 950d8e8375f3ff4787de51b7bdf8dd23a3ad6547affected1a218d312e65ec396b2739056a8ea78493015f21 to < fdfb736282b9665c0169df0c4152ec91fdea2767affected1a218d312e65ec396b2739056a8ea78493015f21 to < bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0affected1a218d312e65ec396b2739056a8ea78493015f21 to < a75b84119e56fc34b0f1403f3b93d357a55dabb6affected1a218d312e65ec396b2739056a8ea78493015f21 to < 71ba8b6e28f7a83b724036f5de07e03bb5473286affected1a218d312e65ec396b2739056a8ea78493015f21 to < d25dd08268aeaceb485189aaa84aa6d68a460291affected1a218d312e65ec396b2739056a8ea78493015f21 to < c38cce70adef874c2a7b5132c14d6c221401deffaffected
Linux Linux
Default version status: affected
5.11affected0 to < 5.11unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/950d8e8375f3ff4787de51b7bdf8dd23a3ad6547 ↗
- https://git.kernel.org/stable/c/fdfb736282b9665c0169df0c4152ec91fdea2767 ↗
- https://git.kernel.org/stable/c/bf1e0cc5cc1d4e71b699fc98cc9198ead0ed53e0 ↗
- https://git.kernel.org/stable/c/a75b84119e56fc34b0f1403f3b93d357a55dabb6 ↗
- https://git.kernel.org/stable/c/71ba8b6e28f7a83b724036f5de07e03bb5473286 ↗
- https://git.kernel.org/stable/c/d25dd08268aeaceb485189aaa84aa6d68a460291 ↗
- https://git.kernel.org/stable/c/c38cce70adef874c2a7b5132c14d6c221401deff ↗