net/sched: netem: fix queue limit check to include reordered packets
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0dhttps://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80bhttps://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e