scsi: core: Validate MODE SENSE lengths in scsi_cdl_enable()
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Validate MODE SENSE lengths in scsi_cdl_enable() scsi_cdl_enable() uses length fields returned by MODE SENSE to locate the ATA feature mode page in a 64-byte stack buffer. A target can report a total length shorter than its mode header and block descriptors. The unsigned subtraction used for the MODE SELECT length can wrap, and the separately computed buf_data can point beyond buf. During automatic scan, enable is false, so the read-modify-write of buf_data[4] can clear the low two bits of a target-selected out-of-bounds stack byte. scsi_mode_select() can then copy up to 64 bytes from outside the buffer into the outgoing MODE SELECT payload, disclosing stack contents to the target. This is reachable while scanning a USB storage device that identifies as an ATA device and advertises CDL support. No filesystem mount or userspace access to the block device is required. On upstream commit cee9395acd80 ("Linux 7.3-rc1"), a build-specific, one-vCPU QEMU/Raw Gadget proof using QEMU-only multi-UDC allocator sampling executed a fixed proof command inside the guest and created a UID-0-owned marker during automatic enumeration, with KASLR and NX enabled. The issue was independently found during security research at Drivesec S.r.l. Cap the available length to the buffer size. Validate and consume the mode header and block descriptor lengths before using the page, and require the five bytes needed to access th
CVE-2026-98232
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-2026-98232
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": "1b22cfb14142aba7742d307c4f8d7006f919308c",
"lessThan": "39491a1ae93054fea10b4030180e5c797b2c0343",
"versionType": "git"
},
{
"status": "affected",
"version": "1b22cfb14142aba7742d307c4f8d7006f919308c",
"lessThan": "60b0b8ce803e3c2b2a9e5485ab3f88599fb4c7a4",
"versionType": "git"
},
{
"status": "affected",
"version": "1b22cfb14142aba7742d307c4f8d7006f919308c",
"lessThan": "6233d0b3ef4623df0d6934dc8b93b161e9854f6b",
"versionType": "git"
},
{
"status": "affected",
"version": "1b22cfb14142aba7742d307c4f8d7006f919308c",
"lessThan": "99a6e4a9176da456904b67dcbae6e77d122782b7",
"versionType": "git"
},
{
"status": "affected",
"version": "1b22cfb14142aba7742d307c4f8d7006f919308c",
"lessThan": "3d676e458fe0c566f5a62753dc696b6a862fc412",
"versionType": "git"
}
],
"programFiles": [
"drivers/scsi/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": "6.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.5",
"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": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/scsi/scsi.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98232
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38312 · Revision 1
- Added to Heist Feed
- Publisher date