Description

In the Linux kernel, the following vulnerability has been resolved: clk: qcom: gfx3d: add parent to parent request map After commit d228ece36345 ("clk: divider: remove round_rate() in favor of determine_rate()") determining GFX3D clock rate crashes, because the passed parent map doesn't provide the expected best_parent_hw clock (with the roundd_rate path before the offending commit the best_parent_hw was ignored). Set the field in parent_req in addition to setting it in the req, fixing the crash. clk_hw_round_rate (drivers/clk/clk.c:1764) (P) clk_divider_bestdiv (drivers/clk/clk-divider.c:336) divider_determine_rate (drivers/clk/clk-divider.c:358) clk_alpha_pll_postdiv_determine_rate (drivers/clk/qcom/clk-alpha-pll.c:1275) clk_core_determine_round_nolock (drivers/clk/clk.c:1606) clk_core_round_rate_nolock (drivers/clk/clk.c:1701) __clk_determine_rate (drivers/clk/clk.c:1741) clk_gfx3d_determine_rate (drivers/clk/qcom/clk-rcg2.c:1268) clk_core_determine_round_nolock (drivers/clk/clk.c:1606) clk_core_round_rate_nolock (drivers/clk/clk.c:1701) clk_core_round_rate_nolock (drivers/clk/clk.c:1710) clk_round_rate (drivers/clk/clk.c:1804) dev_pm_opp_set_rate (drivers/opp/core.c:1440 (discriminator 1)) msm_devfreq_target (drivers/gpu/drm/msm/msm_gpu_devfreq.c:51) devfreq_set_target (drivers/devfreq/devfreq.c:360) devfreq_update_target (drivers/devfreq/devfreq.c:426) devfreq_monitor (drivers/devfreq/devfreq.c:458) process_one_work (arch/arm64/include/asm/jump_label.h:36 include/trace/events/workqueue.h:110 kernel/workqueue.c:3284) worker_thread (kernel/workqueue.c:3356 (discriminator 2) kernel/workqueue.c:3443 (discriminator 2)) kthread (kernel/kthread.c:467) ret_from_fork (arch/arm64/kernel/entry.S:861)

Affected Products 5

References 6

• git.kernel.org https://git.kernel.org/stable/c/2583cb925ca1ce450aa5d74a05a67448db970193
  Patch
• git.kernel.org https://git.kernel.org/stable/c/547ae2f17349c7586953af5ef50de43ef3f65e9e
  Patch
• git.kernel.org https://git.kernel.org/stable/c/56360aa4ddd736fc19e6d0b0206c5e437e0d6ff8
  Patch
• git.kernel.org https://git.kernel.org/stable/c/82cfe5292b11deb1dc33822f67f73cfbe8eafe25
  Patch
• git.kernel.org https://git.kernel.org/stable/c/8aa972eba1f29068d13bec716d33abca30fb3f2a
  Patch
• git.kernel.org https://git.kernel.org/stable/c/aed53da569fb96eec09b4817b1953bcc2e467eea
  Patch

Remediation

• git.kernel.org https://git.kernel.org/stable/c/2583cb925ca1ce450aa5d74a05a67448db970193
  Patch
• git.kernel.org https://git.kernel.org/stable/c/547ae2f17349c7586953af5ef50de43ef3f65e9e
  Patch
• git.kernel.org https://git.kernel.org/stable/c/56360aa4ddd736fc19e6d0b0206c5e437e0d6ff8
  Patch
• git.kernel.org https://git.kernel.org/stable/c/82cfe5292b11deb1dc33822f67f73cfbe8eafe25
  Patch
• git.kernel.org https://git.kernel.org/stable/c/8aa972eba1f29068d13bec716d33abca30fb3f2a
  Patch
• git.kernel.org https://git.kernel.org/stable/c/aed53da569fb96eec09b4817b1953bcc2e467eea
  Patch