CVE-2026-43481
net-shapers: don't free reply skb after genlmsg_reply()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
6th
In the Linux kernel, the following vulnerability has been resolved: net-shapers: don't free reply skb after genlmsg_reply() genlmsg_reply() hands the reply skb to netlink, and netlink_unicast() consumes it on all return paths, whether the skb is queued successfully or freed on an error path. net_shaper_nl_get_doit() and net_shaper_nl_cap_get_doit() currently jump to free_msg after genlmsg_reply() fails and call nlmsg_free(msg), which can hit the same skb twice. Return the genlmsg_reply() error directly and keep free_msg only for pre-reply failures.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 13, 2026 |
| Last Updated | May 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
4b623f9f0f59652ea71fcb27d60b4c3b65126dbb < 8738dcc844fff7d0157ee775230e95df3b1884d7 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb < 83f7b54242d0abbfce35a55c01322f50962ed3ee 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb < 57885276cc16a2e2b76282c808a4e84cbecb3aae
Linux / Linux
6.13