Medium 5.5Published Jul 1, 2026

CVE-2026-53332slimbus: qcom-ngd-ctrl: Register callbacks after creating the ngd

Updated under an hour ago (Oct 26, 2026, 1:23 PM ET)

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In 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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	917809e2280bb83994be8b642373fd941d40c407 builds before 946b97d632f0f58a705dafac644c1e9346e01f35; 917809e2280bb83994be8b642373fd941d40c407 builds before 2047eeb38db878a31f58db19d98f8aedf284342e; from 917809e2280bb83994be8b642373fd941d40c407 before afc631e246936a40558f494112a4188401382671; 917809e2280bb83994be8b642373fd941d40c407 builds before 290014c7987636e6105bba89fa04cb4d59f775c1; from 917809e2280bb83994be8b642373fd941d40c407 before fa3790c7ea98328ddc3f7d8bf40247556245a6fc; 917809e2280bb83994be8b642373fd941d40c407 builds before 24ec89123fc9d0d24ce719dcf7fd6c57e5b0d753; 917809e2280bb83994be8b642373fd941d40c407 builds before 08564e15c47a5fb0af6643a43ee15521d49bcdea; 917809e2280bb83994be8b642373fd941d40c407 builds before 2a9d50e9ea406e0c8735938484adc20515ef1b47	CNA record
linux linux_kernel linux:linux_kernel	from 4.19 before 5.10.260; from 5.11 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; 7.1; and 3 more ranges	NVD

References

References

https://git.kernel.org/stable/c/946b97d632f0f58a705dafac644c1e9346e01f35	patch
https://git.kernel.org/stable/c/2047eeb38db878a31f58db19d98f8aedf284342e
https://git.kernel.org/stable/c/afc631e246936a40558f494112a4188401382671
https://git.kernel.org/stable/c/290014c7987636e6105bba89fa04cb4d59f775c1
https://git.kernel.org/stable/c/fa3790c7ea98328ddc3f7d8bf40247556245a6fc	patch
https://git.kernel.org/stable/c/24ec89123fc9d0d24ce719dcf7fd6c57e5b0d753	patch
https://git.kernel.org/stable/c/08564e15c47a5fb0af6643a43ee15521d49bcdea	patch
https://git.kernel.org/stable/c/2a9d50e9ea406e0c8735938484adc20515ef1b47	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.