CVE-2026-98010
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: drr: clamp quantum in change class
In the Linux kernel, the following vulnerability has been resolved: net/sched: drr: clamp quantum in change class drr_change_class() rejects explicit quantum==0 but falls back to psched_mtu() with no floor. With a crafted size table qdisc_pkt_len reaches ~2 GiB, so quantum=1 (or a zero psched_mtu on a headerless device) makes the deficit-refill loop spin under the qdisc lock. Add clamp_t(u32, quantum, 256, 1<<20) after the zero reject and on the fallback path. The explicit-zero reject is preserved. Conditions to recreate the bug: CONFIG_NET_SCH_DRR=y. Requires CAP_NET_ADMIN (namespace-local via unshare -Urn suffices). tc qdisc add dev dummy0 root drr tc class add dev dummy0 parent 1: classid 1:1 drr quantum 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) |
|---|---|---|---|---|---|
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | e2297bbf9cf6ece86f1d1f8c683517a994990f9e | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | 560794ee6e040b6e1c4ac2b3c8909f341a4596ee | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | 23fea7e6736b2e1c6f6f2f05cccf33d36834da73 | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | b464affe9f9dfe41ac48930c376e3fb8596651b0 | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | dc8b374214ef5bba4882bbd95b361e42555cfc0d | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | d43cded350fe1218493ad3d37a276aff14108ae6 | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | 8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b | Unavailable | None listed |
| 13d2a1d2b032de08d7dcab6a1edcd47802681f96 | affected | git | 8382abec0f1568d0a5590d75a3df92f23fcf5196 | 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) |
|---|---|---|---|---|---|
| 2.6.29 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.29 | 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 |