net: macb: fix dma_alloc_coherent() leak on macb_alloc() error paths
In the Linux kernel, the following vulnerability has been resolved: net: macb: fix dma_alloc_coherent() leak on macb_alloc() error paths Fix 3 leaks in macb_alloc() error paths: - Tx buffer allocated but crossing a 4G boundary: Tx leaked. - Rx buffer allocation fails: Tx leaked. - Rx buffer allocated but crossing a 4G boundary: Tx & Rx leaked. This is because our error handling calls macb_free(bp) which in turn frees the buffers stored in bp->queues[0], but nothing has been stored in there. Fix by storing allocated buffers into bp->queues[0] ASAP.
CVE-2026-98492
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-2026-98492
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": "78d901897b3cae06b38f54e48a2378cf9da21175",
"lessThan": "bda487567d0b7b15dfa876511085c0666b9efad5",
"versionType": "git"
},
{
"status": "affected",
"version": "78d901897b3cae06b38f54e48a2378cf9da21175",
"lessThan": "259e6cbb6a097da8ced544ee92a6fbde35aa1338",
"versionType": "git"
},
{
"status": "affected",
"version": "78d901897b3cae06b38f54e48a2378cf9da21175",
"lessThan": "23d42b9a3bcd55b17d3b371544fedc708c2397e9",
"versionType": "git"
},
{
"status": "affected",
"version": "982a4d9a2e12b693f684eff943043a607628d871",
"versionType": "git"
},
{
"status": "affected",
"version": "6.17.3",
"lessThan": "6.18",
"versionType": "semver"
}
],
"programFiles": [
"drivers/net/ethernet/cadence/macb_main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"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/cadence/macb_main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98492
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38531 · Revision 1
- Added to Heist Feed
- Publisher date