Linux Kernel clk: qcom gfx3d parent map crash
CVE-2026-46247 Published on June 3, 2026
clk: qcom: gfx3d: add parent to parent request map
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)
Products Associated with CVE-2026-46247
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Affected Versions
Linux:- Version 55213e1acec9218580c90d36034aa0370a51daab and below 82cfe5292b11deb1dc33822f67f73cfbe8eafe25 is affected.
- Version 55213e1acec9218580c90d36034aa0370a51daab and below 547ae2f17349c7586953af5ef50de43ef3f65e9e is affected.
- Version 55213e1acec9218580c90d36034aa0370a51daab and below 56360aa4ddd736fc19e6d0b0206c5e437e0d6ff8 is affected.
- Version 55213e1acec9218580c90d36034aa0370a51daab and below aed53da569fb96eec09b4817b1953bcc2e467eea is affected.
- Version 55213e1acec9218580c90d36034aa0370a51daab and below 8aa972eba1f29068d13bec716d33abca30fb3f2a is affected.
- Version 55213e1acec9218580c90d36034aa0370a51daab and below 2583cb925ca1ce450aa5d74a05a67448db970193 is affected.
- Version 4.5 is affected.
- Before 4.5 is unaffected.
- Version 6.1.165, <= 6.1.* is unaffected.
- Version 6.6.128, <= 6.6.* is unaffected.
- Version 6.12.75, <= 6.12.* is unaffected.
- Version 6.18.14, <= 6.18.* is unaffected.
- Version 6.19.4, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.