Medium 5.5Published Jul 1, 2026

CVE-2026-53339i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()

Updated under an hour ago (Oct 27, 2026, 1:40 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: i2c: qcom-cci: Fix NULL pointer dereference in cci_remove() On all modern platforms Qualcomm CCI controller provides two I2C masters, and on particular boards only one I2C master may be initialized, and in such cases the device unbinding or driver removal causes a NULL pointer dereference, because cci_halt() is called for all two I2C masters, but a completion is initialized only for the single enabled master: % rmmod i2c-qcom-cci Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 <snip> Call trace: __wait_for_common+0x194/0x1a8 (P) wait_for_completion_timeout+0x20/0x2c cci_remove+0xc4/0x138 [i2c_qcom_cci] platform_remove+0x20/0x30 device_remove+0x4c/0x80 device_release_driver_internal+0x1c8/0x224 driver_detach+0x50/0x98 bus_remove_driver+0x6c/0xbc driver_unregister+0x30/0x60 platform_driver_unregister+0x14/0x20 qcom_cci_driver_exit+0x18/0x1008 [i2c_qcom_cci] ....

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: Analyzed
Record last updated: Jul 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e517526195de400158e05a08764d1fb61d579105 before e8669d12da0ade52adfe0abe96cd99e708abc9bd; from e517526195de400158e05a08764d1fb61d579105 before 4d2b4a9cda6837e5ee1de1290f2e773a713b71e9; from e517526195de400158e05a08764d1fb61d579105 before a50b8adb9cdb9a495b0b45583956897b7411ed7a; from e517526195de400158e05a08764d1fb61d579105 before 7107627b8b35015027201e7a095a3f6e30b4a46f; from e517526195de400158e05a08764d1fb61d579105 before 4cd206c1d57a9370d5219f7b1fc45169d7bdf951; from e517526195de400158e05a08764d1fb61d579105 before a162a260c8c4db7501c65220e76913e8e351f823; from e517526195de400158e05a08764d1fb61d579105 before 8ce7ff721a5e9d06d53ef65d01c89fce6d26d6ff; from e517526195de400158e05a08764d1fb61d579105 before 729ac5a4b966aac42e08a94dea966f4429008548	CNA record
linux linux_kernel linux:linux_kernel	from 5.8 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.176; from 6.2 before 6.6.143; from 6.7 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/e8669d12da0ade52adfe0abe96cd99e708abc9bd	patch
https://git.kernel.org/stable/c/4d2b4a9cda6837e5ee1de1290f2e773a713b71e9	patch
https://git.kernel.org/stable/c/a50b8adb9cdb9a495b0b45583956897b7411ed7a	patch
https://git.kernel.org/stable/c/7107627b8b35015027201e7a095a3f6e30b4a46f	patch
https://git.kernel.org/stable/c/4cd206c1d57a9370d5219f7b1fc45169d7bdf951	patch
https://git.kernel.org/stable/c/a162a260c8c4db7501c65220e76913e8e351f823	patch
https://git.kernel.org/stable/c/8ce7ff721a5e9d06d53ef65d01c89fce6d26d6ff	patch
https://git.kernel.org/stable/c/729ac5a4b966aac42e08a94dea966f4429008548	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.