CVE-2026-98009
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net/sched: ets: clamp quantum in parse and fallback paths
In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: clamp quantum in parse and fallback paths ets_qdisc_change() falls back to psched_mtu() with no floor for bands without an explicit quantum. With a crafted size table qdisc_pkt_len reaches ~2 GiB, so a zero psched_mtu on a headerless device makes the deficit-refill loop spin under the qdisc lock. Move the floor into ets_quantum_parse() so explicitly configured quanta are also clamped to [256, 1<<20], not just the fallback path. Conditions to recreate the bug: CONFIG_NET_SCH_ETS=y. Requires CAP_NET_ADMIN (namespace-local via unshare -Urn suffices). tc qdisc add dev dummy0 root ets bands 3 strict 2 quanta 1 1
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 440b66cc7b56ea38e9b878ae88da91992efaa4c4 | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 4ef8664eafafc8db68a1d52601f17dc008a223b7 | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 8b8d782c3b96376217087767dcf662cd3d25f226 | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 226d2702e74a570f5bfae6115b4706da4b94e5cf | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 99ae477b892e203a37985ebc56f0063e072f7f4b | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 8f80b113dea0bed3c1a31a4224b72775cd9ec52d | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | de22c30ec5598aca8797f02082d2ee1358dfa3ff | Unavailable | None listed |
| dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 | affected | git | 1c38487f46b243bfeefec0c0c86023a3904f2214 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.6 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.111 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.53 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.7 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |