Acknowledged
Created: Jul 7, 2025
Updated: Jul 8, 2025
Found In Version: 10.23.30.1
Severity: Standard
Applicable for: Wind River Linux LTS 23
Component/s: Kernel
In the Linux kernel, the following vulnerability has been resolved:EOL][EOL]net_sched: sch_sfq: reject invalid perturb period[EOL][EOL]Gerrard Tai reported that SFQ perturb_period has no range check yet,[EOL]and this can be used to trigger a race condition fixed in a separate patch.[EOL][EOL]We want to make sure ctl->perturb_period * HZ will not overflow[EOL]and is positive.[EOL][EOL][EOL]tc qd add dev lo root sfq perturb -10 # negative value : error[EOL]Error: sch_sfq: invalid perturb period.[EOL][EOL]tc qd add dev lo root sfq perturb 1000000000 # too big : error[EOL]Error: sch_sfq: invalid perturb period.[EOL][EOL]tc qd add dev lo root sfq perturb 2000000 # acceptable value[EOL]tc -s -d qd sh dev lo[EOL]qdisc sfq 8005: root refcnt 2 limit 127p quantum 64Kb depth 127 flows 128 divisor 1024 perturb 2000000sec[EOL] Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)[EOL] backlog 0b 0p requeues 0
CREATE(Triage):(User=admin) [CVE-2025-38193 (https://nvd.nist.gov/vuln/detail/CVE-2025-38193)
