CVE-2022-50510 PUBLISHED

perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()

Assigner: Linux
Reserved: 07.10.2025 Published: 07.10.2025 Updated: 07.10.2025

In the Linux kernel, the following vulnerability has been resolved:

perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()

arm_smmu_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path.

Similar to the handling of arm_ccn_init() in commit 26242b330093 ("bus: arm-ccn: Prevent hotplug callback leak")

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21 to d69bdb61d577297d3851fc9f6403574bf73ef41f (excl.)
  • affected from 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21 to 359286f886feef38536eaa7e673dc3440f03b0a1 (excl.)
  • affected from 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21 to b131304fe722853cf26e55c4fa21fc58a36e7f21 (excl.)
  • affected from 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21 to f245ca9a0fe7f794a8187ad803d5e2ced5a11cb2 (excl.)
  • affected from 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21 to 582babe17ea878ec1d76f30e03f3a6ce6e30eb91 (excl.)
  • affected from 7d839b4b9e00645e49345d6ce5dfa8edf53c1a21 to 6f2d566b46436a50a80d6445e82879686b89588c (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.2 is affected
  • unaffected from 0 to 5.2 (excl.)
  • unaffected from 5.4.229 to 5.4.* (incl.)
  • unaffected from 5.10.163 to 5.10.* (incl.)
  • unaffected from 5.15.86 to 5.15.* (incl.)
  • unaffected from 6.0.16 to 6.0.* (incl.)
  • unaffected from 6.1.2 to 6.1.* (incl.)
  • unaffected from 6.2 to * (incl.)

References