ata: libata-sff: Ensure that we cannot write outside the allocated buffer (Linux Linux)

CVE-2025-21738
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.22 % · percentile 13 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

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.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < a8f8cf87059ed1905c2a5c72f8b39a4f57b11b4c ; affected 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < d5e6e3000309359eae2a17117aa6e3c44897bf6c ; affected 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < 0dd5aade301a10f4b329fa7454fdcc2518741902 ; affected 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < 0a17a9944b8d89ef03946121241870ac53ddaf45 ; affected 5a5dbd18a7496ed403f6f54bb20c955c65482fa5 < 6e74e53b34b6dec5a50e1404e2680852ec6768d2
Linux · Linuxaffected 2.6.22 ; unaffected 0 < 2.6.22 ; unaffected 6.1.129 ≤ 6.1.* ; unaffected 6.6.78 ≤ 6.6.* ; unaffected 6.12.14 ≤ 6.12.* ; unaffected 6.13.3 ≤ 6.13.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD