slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd

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Summary

CVECVE-2026-53332
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-01 14:16:41 UTC
Updated2026-07-04 12:17:01 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd When the remoteproc starts in parallel with the NGD driver being probed, or the remoteproc is already up when the PDR lookup is being registered, or in the theoretical event that we get an interrupt from the hardware, these callbacks will operate on uninitialized data. This result in issues to boot the affected boards. One such example can be seen in the following fault, where qcom_slim_ngd_ssr_pdr_notify() schedules work on the NULL ngd_up_work. [ 21.858578] ------------[ cut here ]------------ [ 21.858745] WARNING: kernel/workqueue.c:2338 at __queue_work+0x5e0/0x790, CPU#2: kworker/2:2/116 ... [ 21.859251] Call trace: [ 21.859255] __queue_work+0x5e0/0x790 (P) [ 21.859265] queue_work_on+0x6c/0xf0 [ 21.859273] qcom_slim_ngd_ssr_pdr_notify+0x110/0x150 [slim_qcom_ngd_ctrl] [ 21.859304] qcom_slim_ngd_ssr_notify+0x24/0x40 [slim_qcom_ngd_ctrl] [ 21.859318] notifier_call_chain+0xa4/0x230 [ 21.859329] srcu_notifier_call_chain+0x64/0xb8 [ 21.859338] ssr_notify_start+0x40/0x78 [qcom_common] [ 21.859355] rproc_start+0x130/0x230 [ 21.859367] rproc_boot+0x3d4/0x518 ... Move the enablement of interrupts, and the registration of SSR and PDR until after the NGD device has been registered. This could be further refined by moving initialization to the control driver probe and by removing the platform driver model from the picture.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.063660000 (date 2026-07-03)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 917809e2280bb83994be8b642373fd941d40c407 946b97d632f0f58a705dafac644c1e9346e01f35 git Not specified
CNA Linux Linux affected 917809e2280bb83994be8b642373fd941d40c407 fa3790c7ea98328ddc3f7d8bf40247556245a6fc git Not specified
CNA Linux Linux affected 917809e2280bb83994be8b642373fd941d40c407 24ec89123fc9d0d24ce719dcf7fd6c57e5b0d753 git Not specified
CNA Linux Linux affected 917809e2280bb83994be8b642373fd941d40c407 08564e15c47a5fb0af6643a43ee15521d49bcdea git Not specified
CNA Linux Linux affected 917809e2280bb83994be8b642373fd941d40c407 2a9d50e9ea406e0c8735938484adc20515ef1b47 git Not specified
CNA Linux Linux affected 4.19 Not specified
CNA Linux Linux unaffected 4.19 semver Not specified
CNA Linux Linux unaffected 5.10.260 5.10.* semver Not specified
CNA Linux Linux unaffected 6.12.94 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.36 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/fa3790c7ea98328ddc3f7d8bf40247556245a6fc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/24ec89123fc9d0d24ce719dcf7fd6c57e5b0d753 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/08564e15c47a5fb0af6643a43ee15521d49bcdea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/946b97d632f0f58a705dafac644c1e9346e01f35 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2a9d50e9ea406e0c8735938484adc20515ef1b47 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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