CVE-2026-53344— pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 6
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I. Basic Information for CVE-2026-53344
Vulnerability Information
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Vulnerability Title
pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init Regmap initialization triggers regcache_maple_populate() which attempts SPI read to populate cache. SPI read requires mcp->dev and mcp->addr to be set, without them, NULL pointer dereference occurs during probe. Move initialization before mcp23s08_spi_regmap_init() call.
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 6.19版本存在安全漏洞，该漏洞源于未初始化mcp->dev和mcp->addr，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
II. Public POCs for CVE-2026-53344
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Patches & Fixes for CVE-2026-53344 (2)
Same Patch Batch · Linux · 2026-07-01 · 31 CVEs total
| CVE-2026-53355 | 9.8 CRITICAL | net: rds: clear i_sends on setup unwind |
| CVE-2026-53354 | 8.8 HIGH | arm64: errata: Mitigate TLBI errata on various Arm CPUs |
| CVE-2026-53341 | 7.8 HIGH | fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() |
| CVE-2026-53356 | 7.8 HIGH | drm/i915/gem: Fix phys BO pread/pwrite with offset |
| CVE-2026-53329 | 7.0 HIGH | drm/amd/display: Use krealloc_array() in dal_vector_reserve() |
| CVE-2026-53343 | ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow | |
| CVE-2026-53326 | debugobjects: Don't call fill_pool() in early boot hardirq context | |
| CVE-2026-53328 | sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task() | |
| CVE-2026-53353 | hsr: Remove WARN_ONCE() in hsr_addr_is_self(). | |
| CVE-2026-53330 | drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval() | |
| CVE-2026-53352 | signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads() | |
| CVE-2026-53351 | riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI | |
| CVE-2026-53350 | ASoC: wm_adsp: Fix NULL dereference when removing firmware controls | |
| CVE-2026-53348 | ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions | |
| CVE-2026-53349 | netfilter: nf_conntrack: destroy stale expectfn expectations on unregister | |
| CVE-2026-53346 | rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES | |
| CVE-2026-53347 | drm/virtio: Fix driver removal with disabled KMS | |
| CVE-2026-53345 | KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying | |
| CVE-2026-53342 | arm64: mm: call pagetable dtor when freeing hot-removed page tables | |
| CVE-2026-53327 | debugobjects: Do not fill_pool() if pi_blocked_on |
Showing top 20 of 31 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev - CVE-2026-74575
thunderbolt: Prevent XDomain delayed work use-after-free on
Same vendor: Linux
- CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev - CVE-2026-74575
thunderbolt: Prevent XDomain delayed work use-after-free on
V. Comments for CVE-2026-53344
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