net: mana: fix use-after-free in add_adev() error path
In the Linux kernel, the following vulnerability has been resolved: net: mana: fix use-after-free in add_adev() error path If auxiliary_device_add() fails, add_adev() jumps to add_fail and calls auxiliary_device_uninit(adev). The auxiliary device has its release callback set to adev_release(), which frees the containing struct mana_adev. Since adev is embedded in struct mana_adev, the subsequent fall-through to init_fail and access to adev->id may result in a use-after-free. Fix this by saving the allocated auxiliary device id in a local variable before calling auxiliary_device_add(), and use that saved id in the cleanup path after auxiliary_device_uninit().
CVE-2026-43056
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-2026-43056
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": "a69839d4327d053b18d8e1b0e7ddeee78db78f4f",
"lessThan": "d88541ffd56d62a61e77209080001eddd4d69815",
"versionType": "git"
},
{
"status": "affected",
"version": "a69839d4327d053b18d8e1b0e7ddeee78db78f4f",
"lessThan": "43f5b19fd190fea20d052bc84741b28031d5baa9",
"versionType": "git"
},
{
"status": "affected",
"version": "a69839d4327d053b18d8e1b0e7ddeee78db78f4f",
"lessThan": "5f4061f8225d18695e5afe9bbf1cb7bd673d7872",
"versionType": "git"
},
{
"status": "affected",
"version": "a69839d4327d053b18d8e1b0e7ddeee78db78f4f",
"lessThan": "e5a75bf026c686b91a7dc6f9c5caf5016745d1fe",
"versionType": "git"
},
{
"status": "affected",
"version": "a69839d4327d053b18d8e1b0e7ddeee78db78f4f",
"lessThan": "c4ea7d8907cf72b259bf70bd8c2e791e1c4ff70f",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/microsoft/mana/mana_en.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/microsoft/mana/mana_en.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43056
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40013 · Revision 1
- Added to Heist Feed
- Publisher date