octeontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init() rvu_mbox_init() is called separately for AF-PF mailboxes during probe and for AF-VF mailboxes when SR-IOV is enabled. Each call used to allocate a new ng_rvu object, leaking the first allocation when the pointer was overwritten on the second call. Sharing one ng_rvu across both paths exposed several teardown bugs: the error path freed all cn20k mailbox DMA and kfree()d ng_rvu even when only the failing init type should be unwound, leaving live AF-PF mailbox memory in use after an AF-VF init failure. mutex_init() was also re-run on the AF-VF path while AF-PF mailbox handlers could still hold rvu->mbox_lock. Probe and SR-IOV failure paths did not release cn20k mailbox DMA either, since cleanup only happened in rvu_remove(). Allocate ng_rvu once with devm_kzalloc(), initialize mbox_lock in the same block, unwind only the mailbox memory for the failing init type, and free cn20k mailbox DMA from the probe and pci_enable_sriov() error paths.
CVE-2026-90079
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-2026-90079
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": "e53ee4acb220acab6832669334279367b0206af6",
"lessThan": "c08314f91782983d67af0807ed1360e404ac4a8b",
"versionType": "git"
},
{
"status": "affected",
"version": "e53ee4acb220acab6832669334279367b0206af6",
"lessThan": "a0fcbea79f034f49bdd44915f28938922023458d",
"versionType": "git"
},
{
"status": "affected",
"version": "e53ee4acb220acab6832669334279367b0206af6",
"lessThan": "3b11a77f69980932c3924054d66e565c9a135747",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/af/cn20k/api.h",
"drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/af/cn20k/api.h",
"drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90079
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36493 · Revision 1
- Added to Heist Feed
- Publisher date