Answer in brief
CVE-2024-46800 records a High severity (CVSS 7.8) vulnerability in sch/netem: fix use after free in netem_dequeue. 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 | >=50612537e9ab29693122fab20fc1eed235054ffe <f0bddb4de043399f16d1969dad5ee5b984a64e7b || >=50612537e9ab29693122fab20fc1eed235054ffe <295ad5afd9efc5f67b86c64fce28fb94e26dc4c9 || >=50612537e9ab29693122fab20fc1eed235054ffe <98c75d76187944296068d685dfd8a1e9fd8c4fdc || >=50612537e9ab29693122fab20fc1eed235054ffe <14f91ab8d391f249b845916820a56f42cf747241 || >=50612537e9ab29693122fab20fc1eed235054ffe <db2c235682913a63054e741fe4e19645fdf2d68e || >=50612537e9ab29693122fab20fc1eed235054ffe <dde33a9d0b80aae0c69594d1f462515d7ff1cb3d || >=50612537e9ab29693122fab20fc1eed235054ffe <32008ab989ddcff1a485fa2b4906234c25dc5cd6 || >=50612537e9ab29693122fab20fc1eed235054ffe <3b3a2a9c6349e25a025d2330f479bc33a6ccb54a | f0bddb4de043399f16d1969dad5ee5b984a64e7b, 295ad5afd9efc5f67b86c64fce28fb94e26dc4c9, 98c75d76187944296068d685dfd8a1e9fd8c4fdc, 14f91ab8d391f249b845916820a56f42cf747241, db2c235682913a63054e741fe4e19645fdf2d68e, dde33a9d0b80aae0c69594d1f462515d7ff1cb3d, 32008ab989ddcff1a485fa2b4906234c25dc5cd6, 3b3a2a9c6349e25a025d2330f479bc33a6ccb54a |
| Linux/Linuxgeneric | 3.3 | Not reported |
Published upstream
Sep 18, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: sch/netem: fix use after free in netem_dequeue If netem_dequeue() enqueues packet to inner qdisc and that qdisc returns __NET_XMIT_STOLEN. The packet is dropped but qdisc_tree_reduce_backlog() is not called to update the parent's q.qlen, leading to the similar use-after-free as Commit e04991a48dbaf382 ("netem: fix return value if duplicate enqueue fails") Commands to trigger KASAN UaF: ip link add type dummy ip link set lo up ip link set dummy0 up tc qdisc add dev lo parent root handle 1: drr tc filter add dev lo parent 1: basic classid 1:1 tc class add dev lo classid 1:1 drr tc qdisc add dev lo parent 1:1 handle 2: netem tc qdisc add dev lo parent 2: handle 3: drr tc filter add dev lo parent 3: basic classid 3:1 action mirred egress redirect dev dummy0 tc class add dev lo classid 3:1 drr ping -c1 -W0.01 localhost # Trigger bug tc class del dev lo classid 1:1 tc class add dev lo classid 1:1 drr ping -c1 -W0.01 localhost # UaF
Quoted source text, attributed separately from HOL analysis.