scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak qla2x00_do_dport_diagnostics() allocates the qla_dport_diag response buffer with kmalloc_obj() (non-zeroing) and, on success, copies the full sizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound sg_copy_to_buffer() only fills as many bytes as the user request payload provides, and qla26xx_dport_diagnostics() zeroes only dd->buf. The options and unused[] fields are therefore copied out uninitialized, leaking kernel heap contents to user space. Allocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2().
CVE-2026-89859
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-2026-89859
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": "ec89146215d124c429bff84b498dccdc4919ffa7",
"lessThan": "2ecc30066c2284d2ed11bbd576ec97156b384054",
"versionType": "git"
},
{
"status": "affected",
"version": "ec89146215d124c429bff84b498dccdc4919ffa7",
"lessThan": "5dfc77099c7d9fde9520a229794b0154d7ccccc1",
"versionType": "git"
},
{
"status": "affected",
"version": "ec89146215d124c429bff84b498dccdc4919ffa7",
"lessThan": "d6e2411516bb95e52cb74c9c56b60ad2548a2730",
"versionType": "git"
},
{
"status": "affected",
"version": "ec89146215d124c429bff84b498dccdc4919ffa7",
"lessThan": "9fc03be982763a131913f84fe73b240ae45bca37",
"versionType": "git"
},
{
"status": "affected",
"version": "ec89146215d124c429bff84b498dccdc4919ffa7",
"lessThan": "a152edab3854f01dd2daf3eaf8f32cbabdb3834e",
"versionType": "git"
}
],
"programFiles": [
"drivers/scsi/qla2xxx/qla_bsg.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/scsi/qla2xxx/qla_bsg.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89859
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48561 · Revision 1
- Added to Heist Feed
- Publisher date