tipc: reject inverted service ranges from peer bindings
In the Linux kernel, the following vulnerability has been resolved: tipc: reject inverted service ranges from peer bindings tipc_update_nametbl() inserts a binding advertised by a peer node using the lower and upper service-range bounds taken directly from the wire, without checking that lower <= upper. The local bind path validates the ordering (tipc_uaddr_valid()), but the name-distribution path does not. A binding with lower > upper is inserted at the far end of the service-range rbtree (keyed on lower) where no lookup or withdrawal can ever match it (service_range_foreach_match() requires sr->lower <= end). The publication, its service_range node and the augmented rbtree entry are then leaked for the lifetime of the namespace, and there is no per-peer cap equivalent to TIPC_MAX_PUBL on locally created bindings. Reject inverted ranges in the network path as well. A peer node can otherwise leak unbounded binding-table memory by sending PUBLICATION items with lower > upper.
CVE-2026-74281
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-2026-74281
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": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "cd1955f81bd8ebeef51b324989ac871ad1947fb6",
"versionType": "git"
},
{
"status": "affected",
"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "f683200b83a0085d4e11abea8c1fdd9fdfb95b0b",
"versionType": "git"
},
{
"status": "affected",
"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "f1715d92ee3095d9215b493a8603a81f646fcf61",
"versionType": "git"
},
{
"status": "affected",
"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "581ef56e5c34d475056ce086dc2ba0e872ba6857",
"versionType": "git"
},
{
"status": "affected",
"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "7e401233f9bb74a626e70698d0d62f3a94ac0676",
"versionType": "git"
},
{
"status": "affected",
"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "973bf0ed896b9898668dbadb82ed849d7d573010",
"versionType": "git"
},
{
"status": "affected",
"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
"lessThan": "2afb648f7b99216c687db1f89739c995e1144153",
"versionType": "git"
}
],
"programFiles": [
"net/tipc/name_distr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/tipc/name_distr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74281
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33078 · Revision 1
- Added to Heist Feed
- Publisher date