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

AI Predicted 5.5 Difficulty: Moderate EPSS 0.11% · P2

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxe517526195de400158e05a08764d1fb61d579105< e8669d12da0ade52adfe0abe96cd99e708abc9bdaffected
e517526195de400158e05a08764d1fb61d579105< 4d2b4a9cda6837e5ee1de1290f2e773a713b71e9affected
e517526195de400158e05a08764d1fb61d579105< a50b8adb9cdb9a495b0b45583956897b7411ed7aaffected
e517526195de400158e05a08764d1fb61d579105< 7107627b8b35015027201e7a095a3f6e30b4a46faffected
e517526195de400158e05a08764d1fb61d579105< 4cd206c1d57a9370d5219f7b1fc45169d7bdf951affected
e517526195de400158e05a08764d1fb61d579105< a162a260c8c4db7501c65220e76913e8e351f823affected
e517526195de400158e05a08764d1fb61d579105< 8ce7ff721a5e9d06d53ef65d01c89fce6d26d6ffaffected
e517526195de400158e05a08764d1fb61d579105< 729ac5a4b966aac42e08a94dea966f4429008548affected
… +10 more rows
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I. Basic Information for CVE-2026-53339

Vulnerability Information
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Vulnerability Title
i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()
Source: CVE Program / CVE List V5
Vulnerability Description
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] ....
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 5.8版本存在安全漏洞，该漏洞源于在cci_remove()中存在空指针取消引用问题，当仅初始化一个I2C主机时，对所有两个I2C主机调用cci_halt()可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux e517526195de400158e05a08764d1fb61d579105 ~ e8669d12da0ade52adfe0abe96cd99e708abc9bd -
LinuxLinux 5.8 -

II. Public POCs for CVE-2026-53339

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III. Intelligence Information for CVE-2026-53339

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Patches & Fixes for CVE-2026-53339 (8)

Same Patch Batch · Linux · 2026-07-01 · 31 CVEs total

CVE-2026-533559.8 CRITICALnet: rds: clear i_sends on setup unwind
CVE-2026-533548.8 HIGHarm64: errata: Mitigate TLBI errata on various Arm CPUs
CVE-2026-533567.8 HIGHdrm/i915/gem: Fix phys BO pread/pwrite with offset
CVE-2026-533417.8 HIGHfhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh()
CVE-2026-533297.0 HIGHdrm/amd/display: Use krealloc_array() in dal_vector_reserve()
CVE-2026-53342arm64: mm: call pagetable dtor when freeing hot-removed page tables
CVE-2026-53353hsr: Remove WARN_ONCE() in hsr_addr_is_self().
CVE-2026-53352signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()
CVE-2026-53351riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI
CVE-2026-53350ASoC: wm_adsp: Fix NULL dereference when removing firmware controls
CVE-2026-53348ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions
CVE-2026-53349netfilter: nf_conntrack: destroy stale expectfn expectations on unregister
CVE-2026-53346rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES
CVE-2026-53347drm/virtio: Fix driver removal with disabled KMS
CVE-2026-53344pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
CVE-2026-53345KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying
CVE-2026-53343ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
CVE-2026-53327debugobjects: Do not fill_pool() if pi_blocked_on
CVE-2026-53340i2c: imx: fix clock and pinctrl state inconsistency in runtime PM
CVE-2026-53338net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53339

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