net: ena: fix MMIO read buffer leak on probe failure
In the Linux kernel, the following vulnerability has been resolved: net: ena: fix MMIO read buffer leak on probe failure ena_device_init() initializes the MMIO read mechanism with ena_com_mmio_reg_read_request_init(), which allocates a coherent DMA buffer for MMIO read responses. The normal removal path releases this buffer through ena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails after ena_device_init() succeeds, the error path destroys the admin resources and eventually frees ena_dev without destroying the MMIO read request, leaving the coherent DMA buffer allocated. Call ena_com_mmio_reg_read_request_destroy() in the probe error path before releasing the remaining device resources. This issue was found by manual code inspection.
CVE-2026-98486
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-2026-98486
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": "1738cd3ed342294360d6a74d4e58800004bff854",
"lessThan": "a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c",
"versionType": "git"
},
{
"status": "affected",
"version": "1738cd3ed342294360d6a74d4e58800004bff854",
"lessThan": "7bd3e9a2d0c288e54f51df260d9433163f5fbc1e",
"versionType": "git"
},
{
"status": "affected",
"version": "1738cd3ed342294360d6a74d4e58800004bff854",
"lessThan": "30ff01b4c7e419bb70f40f01dcd7f6af680808b3",
"versionType": "git"
},
{
"status": "affected",
"version": "1738cd3ed342294360d6a74d4e58800004bff854",
"lessThan": "47785f9f638b064ce6e32e8e3b6f1ffd83849fc2",
"versionType": "git"
},
{
"status": "affected",
"version": "1738cd3ed342294360d6a74d4e58800004bff854",
"lessThan": "9476b4468862927297c94c440863cd8ed1e7cc83",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/amazon/ena/ena_netdev.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"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": "6.18.55",
"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/net/ethernet/amazon/ena/ena_netdev.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98486
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48884 · Revision 1
- Added to Heist Feed
- Publisher date