ice: fix metadata_dst refcount handling on representor teardown
In the Linux kernel, the following vulnerability has been resolved: ice: fix metadata_dst refcount handling on representor teardown ice_eswitch_release_repr() uses metadata_dst_free() to release the representor's metadata_dst. metadata_dst_free() directly frees the underlying memory without checking the dst_entry refcount. When ice_eswitch_port_start_xmit() processes a packet, it takes a reference via dst_hold() and attaches the metadata_dst to the skb. If the representor is torn down while packets are still queued on the lower device (e.g. in a qdisc), the metadata_dst is freed while references are still held. Use dst_release() instead, which correctly decrements the refcount and only frees the object when all references are dropped. The dst subsystem already handles metadata_dst cleanup in dst_destroy() when DST_METADATA is set. Other drivers sharing this pattern (nfp, airoha, bnxt) already use dst_release() for their metadata_dst lifecycle.
CVE-2026-99043
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-2026-99043
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": "f5396b8a663f7a78ee5b75a47ee524b40795b265",
"lessThan": "1f263235651775f93c15d90c9f25c3f4a4ef6512",
"versionType": "git"
},
{
"status": "affected",
"version": "f5396b8a663f7a78ee5b75a47ee524b40795b265",
"lessThan": "6f5544f53f1e58ea8a49fb9f9158d5793b9205b0",
"versionType": "git"
},
{
"status": "affected",
"version": "f5396b8a663f7a78ee5b75a47ee524b40795b265",
"lessThan": "beb05f484a1e4a5a66e3678e4b7f3147f651c080",
"versionType": "git"
},
{
"status": "affected",
"version": "f5396b8a663f7a78ee5b75a47ee524b40795b265",
"lessThan": "5e4d20db5179e83a4948927bc39e489a9a83256d",
"versionType": "git"
},
{
"status": "affected",
"version": "f5396b8a663f7a78ee5b75a47ee524b40795b265",
"lessThan": "58858b8f14803a7eeac297b3ce20f3b21bf2ff66",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/intel/ice/ice_eswitch.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/intel/ice/ice_eswitch.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-99043
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #52875 · Revision 1
- Added to Heist Feed
- Publisher date