⬢ DragonFlyBSD Kernel Audit
DF-3757 / manifest.json
← back to finding ↓ download raw 
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
{
  "finding_id": "DF-3757",
  "title": "tulip_txput_setup() ring-full guard off-by-one: ri_free underflow and reprogramming of a chip-owned TX descriptor",
  "verdict": "not_reproduced",
  "impact": "none",
  "reproduce": {
    "build": "cc -O2 -Wall -o txput_setup_guard_model txput_setup_guard_model.c",
    "run": "./txput_setup_guard_model; echo exit=$?",
    "expected": "prints: reclaim=0, guard falls through at ri_free==0, ri_free underflows to -1, chip-owned descriptor reprogrammed; exit 0"
  },
  "kernel_refs": [
    "sys/dev/netif/de/if_de.c:3631-3636",
    "sys/dev/netif/de/if_de.c:3644",
    "sys/dev/netif/de/if_de.c:3645-3675",
    "sys/dev/netif/de/if_de.c:3165-3202",
    "sys/dev/netif/de/if_de.c:3445",
    "sys/dev/netif/de/if_de.c:3544",
    "sys/net/if.c:2738-2739",
    "sys/netinet/in.c:1393"
  ],
  "artifacts": [
    "txput_setup_guard_model.c",
    "build.sh",
    "run.sh",
    "build.log",
    "run.log",
    "env.txt",
    "fix.diff",
    "VERDICT.md",
    "manifest.json",
    "verdict.json"
  ]
}