CVE-2026-52984
Published: June 26, 2026Last modified: June 26, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: netem: fix queue limit check to include reordered packets The queue limit check in netem_enqueue() uses q->t_len which only counts packets in the internal tfifo. Packets placed in sch->q by the reorder path (__qdisc_enqueue_head) are not counted, allowing the total queue occupancy to exceed sch->limit under reordering. Include sch->q.qlen in the limit check.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.175-r0) |
| 25 LTS | linux-lts | Not affected (6.6.89-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72
- https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9
- https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d
- https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6
- https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177
- https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3
- https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b
- https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e