cbcvebase.
CVE-2025-21738
published 2025-02-27

CVE-2025-21738: In the Linux kernel, the following vulnerability has been resolved: ata: libata-sff: Ensure that we cannot write outside the allocated buffer reveliofuzzing…

PriorityP423medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
12.8th percentile
In the Linux kernel, the following vulnerability has been resolved: ata: libata-sff: Ensure that we cannot write outside the allocated buffer reveliofuzzing reported that a SCSI_IOCTL_SEND_COMMAND ioctl with out_len set to 0xd42, SCSI command set to ATA_16 PASS-THROUGH, ATA command set to ATA_NOP, and protocol set to ATA_PROT_PIO, can cause ata_pio_sector() to write outside the allocated buffer, overwriting random memory. While a ATA device is supposed to abort a ATA_NOP command, there does seem to be a bug either in libata-sff or QEMU, where either this status is not set, or the status is cleared before read by ata_sff_hsm_move(). Anyway, that is most likely a separate bug. Looking at __atapi_pio_bytes(), it already has a safety check to ensure that __atapi_pio_bytes() cannot write outside the allocated buffer. Add a similar check to ata_pio_sector(), such that also ata_pio_sector() cannot write outside the allocated buffer.

Affected

19 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.129-1 (bookworm)linux 6.1.129-1 (bookworm)
debianlinux-6.1< linux 6.1.129-1 (bookworm)linux 6.1.129-1 (bookworm)
linuxlinux
linuxlinux>= 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < a8f8cf87059ed1905c2a5c72f8b39a4f57b11b4ca8f8cf87059ed1905c2a5c72f8b39a4f57b11b4c
linuxlinux>= 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < d5e6e3000309359eae2a17117aa6e3c44897bf6cd5e6e3000309359eae2a17117aa6e3c44897bf6c
linuxlinux>= 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < 0dd5aade301a10f4b329fa7454fdcc25187419020dd5aade301a10f4b329fa7454fdcc2518741902
linuxlinux>= 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < 0a17a9944b8d89ef03946121241870ac53ddaf450a17a9944b8d89ef03946121241870ac53ddaf45
linuxlinux>= 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < 6e74e53b34b6dec5a50e1404e2680852ec6768d26e74e53b34b6dec5a50e1404e2680852ec6768d2
linuxlinux_kernel< 6.1.1296.1.129
linuxlinux_kernel>= 0 < 6.1.129-16.1.129-1
linuxlinux_kernel>= 0 < 6.12.15-16.12.15-1
linuxlinux_kernel>= 0 < 6.12.15-16.12.15-1
linuxlinux_kernel>= 0 < 6.8.0-64.676.8.0-64.67
linuxlinux_kernel>= 6.13 < 6.13.36.13.3
linuxlinux_kernel>= 6.2 < 6.6.786.6.78
linuxlinux_kernel>= 6.7 < 6.12.146.12.14
msrccbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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