CVE-2025-21656— hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur
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I. Basic Information for CVE-2025-21656
Vulnerability Information
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Vulnerability Title
hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (drivetemp) Fix driver producing garbage data when SCSI errors occur scsi_execute_cmd() function can return both negative (linux codes) and positive (scsi_cmnd result field) error codes. Currently the driver just passes error codes of scsi_execute_cmd() to hwmon core, which is incorrect because hwmon only checks for negative error codes. This leads to hwmon reporting uninitialized data to userspace in case of SCSI errors (for example if the disk drive was disconnected). This patch checks scsi_execute_cmd() output and returns -EIO if it's error code is positive. [groeck: Avoid inline variable declaration for portability]
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hwmon模块中drivetemp驱动在SCSI错误时返回错误的错误码。这可能导致用户空间接收到未初始化的数据。
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-2025-21656
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Same Patch Batch · Linux · 2025-01-21 · 25 CVEs total
| CVE-2024-57943 | exfat: fix the new buffer was not zeroed before writing | |
| CVE-2024-57946 | virtio-blk: don't keep queue frozen during system suspend | |
| CVE-2025-21664 | dm thin: make get_first_thin use rcu-safe list first function | |
| CVE-2025-21663 | net: stmmac: dwmac-tegra: Read iommu stream id from device tree | |
| CVE-2025-21662 | net/mlx5: Fix variable not being completed when function returns | |
| CVE-2025-21661 | gpio: virtuser: fix missing lookup table cleanups | |
| CVE-2025-21660 | ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked | |
| CVE-2025-21659 | netdev: prevent accessing NAPI instances from another namespace | |
| CVE-2025-21658 | btrfs: avoid NULL pointer dereference if no valid extent tree | |
| CVE-2025-21657 | sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass() | |
| CVE-2024-57945 | riscv: mm: Fix the out of bound issue of vmemmap address | |
| CVE-2024-57944 | iio: adc: ti-ads1298: Add NULL check in ads1298_init | |
| CVE-2024-57930 | tracing: Have process_string() also allow arrays | |
| CVE-2024-57942 | netfs: Fix ceph copy to cache on write-begin | |
| CVE-2024-57941 | netfs: Fix the (non-)cancellation of copy when cache is temporarily disabled | |
| CVE-2024-57940 | exfat: fix the infinite loop in exfat_readdir() | |
| CVE-2024-57939 | riscv: Fix sleeping in invalid context in die() | |
| CVE-2024-57938 | net/sctp: Prevent autoclose integer overflow in sctp_association_init() | |
| CVE-2024-57936 | RDMA/bnxt_re: Fix max SGEs for the Work Request | |
| CVE-2024-57935 | RDMA/hns: Fix accessing invalid dip_ctx during destroying QP |
Showing top 20 of 25 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-2025-21656
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