Answer in brief
CVE-2026-43481 records a High severity (CVSS 7.8) vulnerability in net-shapers: don't free reply skb after genlmsg_reply(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4b623f9f0f59652ea71fcb27d60b4c3b65126dbb <8738dcc844fff7d0157ee775230e95df3b1884d7 || >=4b623f9f0f59652ea71fcb27d60b4c3b65126dbb <83f7b54242d0abbfce35a55c01322f50962ed3ee || >=4b623f9f0f59652ea71fcb27d60b4c3b65126dbb <57885276cc16a2e2b76282c808a4e84cbecb3aae | 8738dcc844fff7d0157ee775230e95df3b1884d7, 83f7b54242d0abbfce35a55c01322f50962ed3ee, 57885276cc16a2e2b76282c808a4e84cbecb3aae |
| Linux/Linuxgeneric | 6.13 | Not reported |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-43481 records a High severity (CVSS 7.8) vulnerability in net-shapers: don't free reply skb after genlmsg_reply(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4b623f9f0f59652ea71fcb27d60b4c3b65126dbb <8738dcc844fff7d0157ee775230e95df3b1884d7 || >=4b623f9f0f59652ea71fcb27d60b4c3b65126dbb <83f7b54242d0abbfce35a55c01322f50962ed3ee || >=4b623f9f0f59652ea71fcb27d60b4c3b65126dbb <57885276cc16a2e2b76282c808a4e84cbecb3aae | 8738dcc844fff7d0157ee775230e95df3b1884d7, 83f7b54242d0abbfce35a55c01322f50962ed3ee, 57885276cc16a2e2b76282c808a4e84cbecb3aae |
| Linux/Linuxgeneric | 6.13 | Not reported |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
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.
Quoted source text, attributed separately from HOL analysis.