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CVE-2025-68773— spi: fsl-cpm: Check length parity before switching to 16 bit mode

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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fsl-cpm SPI驱动在切换到16位模式前未验证长度奇偶性，可能导致缓冲区溢出。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 29

VendorProduct Version RangeStatus
Linux Linux 60afe299bb541a928ba39bcb4ae8d3e428d1c5a5< c8f1d35076b78df61ace737e41cc1f4b7b63236c affected
4badd33929c05ed314794b95f1af1308f7222be8< 9c34a4a2ead00979d203a8c16bea87f0ef5291d8 affected
7f6738e003b364783f3019fdf6e7645bc8dd1643< 837a23a11e0f734f096c7c7b0778d0e625e3dc87 affected
fc96ec826bced75cc6b9c07a4ac44bbf651337ab< 3dd6d01384823e1bd8602873153d6fc4337ac4fe affected
fc96ec826bced75cc6b9c07a4ac44bbf651337ab< 743cebcbd1b2609ec5057ab474979cef73d1b681 affected
fc96ec826bced75cc6b9c07a4ac44bbf651337ab< be0b613198e6bfa104ad520397cab82ad3ec1771 affected
fc96ec826bced75cc6b9c07a4ac44bbf651337ab< 1417927df8049a0194933861e9b098669a95c762 affected
42c04316d9275ec267d36e5e9064cd56c9884148 affected
… +21 more rows
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I. Basic Information for CVE-2025-68773

Vulnerability Information
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Vulnerability Title
spi: fsl-cpm: Check length parity before switching to 16 bit mode
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: fsl-cpm: Check length parity before switching to 16 bit mode Commit fc96ec826bce ("spi: fsl-cpm: Use 16 bit mode for large transfers with even size") failed to make sure that the size is really even before switching to 16 bit mode. Until recently the problem went unnoticed because kernfs uses a pre-allocated bounce buffer of size PAGE_SIZE for reading EEPROM. But commit 8ad6249c51d0 ("eeprom: at25: convert to spi-mem API") introduced an additional dynamically allocated bounce buffer whose size is exactly the size of the transfer, leading to a buffer overrun in the fsl-cpm driver when that size is odd. Add the missing length parity verification and remain in 8 bit mode when the length is not even.
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fsl-cpm SPI驱动在切换到16位模式前未验证长度奇偶性，可能导致缓冲区溢出。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 60afe299bb541a928ba39bcb4ae8d3e428d1c5a5 ~ c8f1d35076b78df61ace737e41cc1f4b7b63236c -
Linux Linux 6.4 -

II. Public POCs for CVE-2025-68773

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III. Intelligence Information for CVE-2025-68773

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-68811 9.8 CRITICAL svcrdma: use rc_pageoff for memcpy byte offset
CVE-2025-68794 9.8 CRITICAL iomap: adjust read range correctly for non-block-aligned positions
CVE-2025-68817 9.8 CRITICAL ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-68775 9.8 CRITICAL net/handshake: duplicate handshake cancellations leak socket
CVE-2025-71068 9.8 CRITICAL svcrdma: bound check rq_pages index in inline path
CVE-2025-68809 9.1 CRITICAL ksmbd: vfs: fix race on m_flags in vfs_cache
CVE-2025-71093 9.1 CRITICAL e1000: fix OOB in e1000_tbi_should_accept()
CVE-2025-71095 9.1 CRITICAL net: stmmac: fix the crash issue for zero copy XDP_TX action
CVE-2025-68818 8.8 HIGH scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-71072 8.2 HIGH shmem: fix recovery on rename failures
CVE-2025-68799 8.1 HIGH caif: fix integer underflow in cffrml_receive()
CVE-2025-68803 8.0 HIGH NFSD: NFSv4 file creation neglects setting ACL
CVE-2025-68795 7.8 HIGH ethtool: Avoid overflowing userspace buffer on stats query
CVE-2025-68808 7.8 HIGH media: vidtv: initialize local pointers upon transfer of memory ownership
CVE-2025-71099 7.8 HIGH drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()
CVE-2025-68792 7.8 HIGH tpm2-sessions: Fix out of range indexing in name_size
CVE-2025-68793 7.8 HIGH drm/amdgpu: fix a job->pasid access race in gpu recovery
CVE-2025-68815 7.8 HIGH net/sched: ets: Remove drr class from the active list if it changes to strict
CVE-2025-68801 7.8 HIGH mlxsw: spectrum_router: Fix neighbour use-after-free
CVE-2025-71082 7.8 HIGH Bluetooth: btusb: revert use of devm_kzalloc in btusb

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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