octeontx2-pf: avoid double free of pool->stack on AQ init failure
In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: avoid double free of pool->stack on AQ init failure otx2_pool_aq_init() frees pool->stack when mailbox sync or retry allocation fails, but leaves the pointer unchanged. Later, otx2_sq_aura_pool_init() unwinds the partial setup through otx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific cn20k_pool_aq_init() implementation has the same bug in its corresponding error path. Set pool->stack to NULL immediately after the local free so the shared cleanup path does not free the same stack again while cleaning up partially initialized pool state. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3. Runtime validation was not performed because reproducing this path requires OcteonTX2/CN20K hardware.
CVE-2026-64222
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-2026-64222
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": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "e6e9bc0bf963662b7042048ab0281014625d4cb4",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "b92e7ea408b6f1144648909c9c49a55d245d7300",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "94192b0579333c3deee2441379aab8ca98fc2e6b",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "4c29603498b05c049dbbbc47e882f2fbf0193cd7",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "0488a0bb344fb1992853b60082acff6be8164d74",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "0d9b9d7dbef976ae7f855b6358f1d703014e96ea",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec",
"versionType": "git"
},
{
"status": "affected",
"version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
"lessThan": "9b244c242bec48b37e82b89787afd6a4c43457e1",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c",
"drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.93",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.35",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.11",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c",
"drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64222
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40976 · Revision 1
- Added to Heist Feed
- Publisher date