CVE-2026-52929
HIGHCVSS v3.1: 7.5 · EPSS: 0.0039 (31.2 percentile)
Source data as of:
At a glance
- Severity
- HIGH
- CVSS
- 7.5 v3.1 · NVD
- EPSS
- 0.0039 (31.2 percentile) · FIRST.org
- CISA KEV
- No
- Attack conditions (CVSS vector)
- NetworkNo privilegesNo user interaction · Source: NVD Vector
- Published
- 2026-06-24 · Modified: 2026-06-28
- References
- Jump to references (8)
CVSS / EPSS / KEV
Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources
Description
In the Linux kernel, the following vulnerability has been resolved: sctp: stream: fully roll back denied add-stream state When ADD_OUT_STREAMS is denied, SCTP only shrinks the queued chunks and then lowers outcnt. That leaves removed stream metadata behind, so a later re-add can reuse a stale ext and hit a null-pointer dereference in the scheduler get path. Fix the rollback by tearing down the removed stream state the same way other stream resizes do. Unschedule the current scheduler state, drop the removed stream ext state with sctp_stream_outq_migrate(), and then reschedule the remaining streams. This keeps scheduler-private RR/FC/PRIO lists consistent while fully rolling back denied outgoing stream additions.
References
Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.
- Reference https://git.kernel.org/stable/c/0cd2dc6dce8ca47212cd306ccd52eb315ef3cf85
- Reference https://git.kernel.org/stable/c/1c6773b8c081509dcd5cd2954f2b02c50c00f151
- Reference https://git.kernel.org/stable/c/39dc2b0eb5371a669ebc9ec6072b9184eac95418
- Reference https://git.kernel.org/stable/c/7dd9a42b044aad2dbe037db1c1e2943582485b44
- Reference https://git.kernel.org/stable/c/9662eb0401518f0b4681f10e7fbf688f504f24cf
- Reference https://git.kernel.org/stable/c/a5f8a90ac9f77c678a9781c0a464b635e0d63e49
- Reference https://git.kernel.org/stable/c/a6724b7b812ac8793514a1d5938db5d9d29ae725
- Reference https://git.kernel.org/stable/c/d5ea0b3e261fcb2cfff142675516165244cab1da