CVE-2025-37896— spi: spi-mem: Add fix to avoid divide error
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I. Basic Information for CVE-2025-37896
Vulnerability Information
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Vulnerability Title
spi: spi-mem: Add fix to avoid divide error
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: spi-mem: Add fix to avoid divide error For some SPI flash memory operations, dummy bytes are not mandatory. For example, in Winbond SPINAND flash memory devices, the `write_cache` and `update_cache` operation variants have zero dummy bytes. Calculating the duration for SPI memory operations with zero dummy bytes causes a divide error when `ncycles` is calculated in the spi_mem_calc_op_duration(). Add changes to skip the 'ncylcles' calculation for zero dummy bytes. Following divide error is fixed by this change: Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI ... ? do_trap+0xdb/0x100 ? do_error_trap+0x75/0xb0 ? spi_mem_calc_op_duration+0x56/0xb0 ? exc_divide_error+0x3b/0x70 ? spi_mem_calc_op_duration+0x56/0xb0 ? asm_exc_divide_error+0x1b/0x20 ? spi_mem_calc_op_duration+0x56/0xb0 ? spinand_select_op_variant+0xee/0x190 [spinand] spinand_match_and_init+0x13e/0x1a0 [spinand] spinand_manufacturer_match+0x6e/0xa0 [spinand] spinand_probe+0x357/0x7f0 [spinand] ? kernfs_activate+0x87/0xd0 spi_mem_probe+0x7a/0xb0 spi_probe+0x7d/0x130
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于spi-mem模块未处理零虚拟字节情况，可能导致除零错误。
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-2025-37896
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Same Patch Batch · Linux · 2025-05-20 · 95 CVEs total
| CVE-2025-37924 | 9.8 CRITICAL | ksmbd: fix use-after-free in kerberos authentication |
| CVE-2025-37958 | mm/huge_memory: fix dereferencing invalid pmd migration entry | |
| CVE-2025-37954 | smb: client: Avoid race in open_cached_dir with lease breaks | |
| CVE-2025-37953 | sch_htb: make htb_deactivate() idempotent | |
| CVE-2025-37949 | xenbus: Use kref to track req lifetime | |
| CVE-2025-37948 | arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs | |
| CVE-2025-37947 | ksmbd: prevent out-of-bounds stream writes by validating *pos | |
| CVE-2025-37946 | s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs | |
| CVE-2025-37945 | net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY | |
| CVE-2025-37950 | ocfs2: fix panic in failed foilio allocation | |
| CVE-2025-37957 | KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception | |
| CVE-2025-37956 | ksmbd: prevent rename with empty string | |
| CVE-2025-37960 | memblock: Accept allocated memory before use in memblock_double_array() | |
| CVE-2025-37959 | bpf: Scrub packet on bpf_redirect_peer | |
| CVE-2025-37961 | ipvs: fix uninit-value for saddr in do_output_route4 | |
| CVE-2025-37963 | arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users | |
| CVE-2025-37962 | ksmbd: fix memory leak in parse_lease_state() | |
| CVE-2025-37964 | x86/mm: Eliminate window where TLB flushes may be inadvertently skipped | |
| CVE-2025-37965 | drm/amd/display: Fix invalid context error in dml helper | |
| CVE-2025-37967 | usb: typec: ucsi: displayport: Fix deadlock |
Showing top 20 of 95 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-37896
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