ata: libata-scsi: bound the ATA passthru sense descriptor writes
In the Linux kernel, the following vulnerability has been resolved: ata: libata-scsi: bound the ATA passthru sense descriptor writes When an ATA PASS-THROUGH command to an ATAPI device fails, the sense buffer holds the device's REQUEST SENSE reply, and ata_scsi_set_passthru_sense_fields() trusts its additional length byte, sb[7], when adding the ATA Status Return descriptor. A faulty or malicious device can use that to make the kernel read and write past the 96-byte buffer in three ways: - scsi_sense_desc_find() is passed sb[7] + 8 as the buffer length, so its clamp against sb[7] does nothing and the walk runs off the end. - A type-9 descriptor found near the end is filled in unchecked. - A new descriptor at sb[8 + len] needs len + 22 bytes, not len + 14, so len 75..82 writes up to 8 bytes past the end. Reproduced with KASAN under qemu, with the emulated ATAPI REQUEST SENSE reply patched: BUG: KASAN: slab-out-of-bounds in scsi_sense_desc_find+0x1a5/0x210 BUG: KASAN: slab-out-of-bounds in ata_scsi_qc_complete+0x1a15/0x1a50 Both are gone with this patch, and a valid descriptor is still filled in.
CVE-2026-98545
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98545
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ce477199c53e3db5a096981c565e232498ddeae4",
"lessThan": "c698f6deabf680f8f4a1727ef2dc80fe78815fbf",
"versionType": "git"
},
{
"status": "affected",
"version": "97981926224afe17ba3e22e0c2b7dd8b516ee574",
"lessThan": "d9a7147b93624660626cd7c3b1143715699e1f5c",
"versionType": "git"
},
{
"status": "affected",
"version": "97981926224afe17ba3e22e0c2b7dd8b516ee574",
"lessThan": "1603abb0c50420e97cf4a1feddbd5e183c5fdf86",
"versionType": "git"
},
{
"status": "affected",
"version": "97981926224afe17ba3e22e0c2b7dd8b516ee574",
"lessThan": "80fbb0bc4d11683c88f2f9d3997ea02fcada5408",
"versionType": "git"
},
{
"status": "affected",
"version": "97981926224afe17ba3e22e0c2b7dd8b516ee574",
"lessThan": "80320b278fea07ffcda3f57b67b61658e0a4e1ca",
"versionType": "git"
},
{
"status": "affected",
"version": "67d9d0b6ae4aaf2c4cef103a96a145c7fdfb15f8",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.44",
"lessThan": "6.6.158",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.10.3",
"lessThan": "6.11",
"versionType": "semver"
}
],
"programFiles": [
"drivers/ata/libata-scsi.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/ata/libata-scsi.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98545
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38569 · Revision 1
- Added to Heist Feed
- Publisher date