CVE-2025-39921— spi: microchip-core-qspi: stop checking viability of op->max_freq in supports_op callback
Possible ATT&CK Techniques 2AI
T1190 · Exploit Public-Facing Application T1068 · Exploitation for Privilege EscalationAffected Version Matrix 6
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2025-39921
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
spi: microchip-core-qspi: stop checking viability of op->max_freq in supports_op callback
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: microchip-core-qspi: stop checking viability of op->max_freq in supports_op callback In commit 13529647743d9 ("spi: microchip-core-qspi: Support per spi-mem operation frequency switches") the logic for checking the viability of op->max_freq in mchp_coreqspi_setup_clock() was copied into mchp_coreqspi_supports_op(). Unfortunately, op->max_freq is not valid when this function is called during probe but is instead zero. Accordingly, baud_rate_val is calculated to be INT_MAX due to division by zero, causing probe of the attached memory device to fail. Seemingly spi-microchip-core-qspi was the only driver that had such a modification made to its supports_op callback when the per_op_freq capability was added, so just remove it to restore prior functionality.
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-microchip-core-qspi驱动程序中未正确验证op->max_freq参数，可能导致设备探测失败。
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-2025-39921
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-39921
请登录查看更多情报信息。
Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total
| CVE-2025-39919 | 8.8 HIGH | wifi: mt76: mt7996: add missing check for rx wcid entries |
| CVE-2025-39918 | 8.8 HIGH | wifi: mt76: fix linked list corruption |
| CVE-2025-39924 | 7.8 HIGH | erofs: fix invalid algorithm for encoded extents |
| CVE-2025-39896 | 7.8 HIGH | accel/ivpu: Prevent recovery work from being queued during device removal |
| CVE-2025-39927 | 7.8 HIGH | ceph: fix race condition validating r_parent before applying state |
| CVE-2025-39906 | 7.8 HIGH | drm/amd/display: remove oem i2c adapter on finish |
| CVE-2025-39908 | 7.8 HIGH | net: dev_ioctl: take ops lock in hwtstamp lower paths |
| CVE-2025-39894 | 7.5 HIGH | netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm |
| CVE-2025-39897 | 7.5 HIGH | net: xilinx: axienet: Add error handling for RX metadata pointer retrieval |
| CVE-2025-39902 | 7.1 HIGH | mm/slub: avoid accessing metadata when pointer is invalid in object_err() |
| CVE-2025-39928 | 7.1 HIGH | i2c: rtl9300: ensure data length is within supported range |
| CVE-2022-50465 | ext4: fix leaking uninitialized memory in fast-commit journal | |
| CVE-2022-50456 | btrfs: fix resolving backrefs for inline extent followed by prealloc | |
| CVE-2022-50458 | clk: tegra: Fix refcount leak in tegra210_clock_init | |
| CVE-2022-50460 | cifs: Fix xid leak in cifs_flock() | |
| CVE-2022-50459 | scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername() | |
| CVE-2022-50461 | net: ethernet: ti: am65-cpsw: Fix PM runtime leakage in am65_cpsw_nuss_ndo_slave_open() | |
| CVE-2022-50462 | MIPS: vpe-mt: fix possible memory leak while module exiting | |
| CVE-2023-53490 | mptcp: fix disconnect vs accept race | |
| CVE-2023-53489 | tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. |
Showing top 20 of 169 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2022-4994
KVM: x86: wean fast IN from emulator_pio_in - CVE-2026-64560
posix-cpu-timers: Prevent UAF caused by non-leader exec() ra - CVE-2026-64559
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl - CVE-2026-64558
s390/pkey: Check length in pkey_pckmo handler implementation - CVE-2026-64556
perf/core: Detach event groups during remove_on_exec
Same vendor: Linux
- CVE-2022-4994
KVM: x86: wean fast IN from emulator_pio_in - CVE-2026-64560
posix-cpu-timers: Prevent UAF caused by non-leader exec() ra - CVE-2026-64559
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl - CVE-2026-64558
s390/pkey: Check length in pkey_pckmo handler implementation - CVE-2026-64556
perf/core: Detach event groups during remove_on_exec
V. Comments for CVE-2025-39921
No comments yet