CVE-2026-98013
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: fq_pie: clamp quantum in change path
In the Linux kernel, the following vulnerability has been resolved: net/sched: fq_pie: clamp quantum in change path fq_pie_change() accepts any quantum value from userspace, including 1. With a crafted size table qdisc_pkt_len reaches ~2 GiB, so quantum=1 makes the deficit-refill loop spin ~2^31 times under the qdisc lock (a soft lockup / denial of service). Add max(256U, ...) matching fq_codel_change(). Conditions to recreate the bug: CONFIG_NET_SCH_FQ_PIE=y. Requires CAP_NET_ADMIN (namespace-local via unshare -Urn suffices). tc qdisc add dev dummy0 root fq_pie tc qdisc change dev dummy0 root fq_pie quantum 1 stab data 32768 size_log 15 cell_log 0
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) |
|---|---|---|---|---|---|
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | ff4f3a0f3abd2ded467931d7da7984a68a768e0b | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | 749aaebc1eb92ce2f38fd3caf68a2f99686d84ef | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | 8fd98e56c41f79278eeb67512c28d7abc175bcf4 | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | 215df1e953ae72a09d425ec188e054058ae23dc9 | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | f90fe65b977e7aa9eb302230a09eb18f8c32ceaa | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | c11e3a39807eb5a200445ae9082843ab86800415 | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | 6655b56e2801008566c594ef231f6c7b3f716c61 | Unavailable | None listed |
| ec97ecf1ebe485a17cd8395a5f35e6b80b57665a | affected | git | 4864f58c53eb47257d55e01f47d4a9f355f7f970 | 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 |