cbcvebase.
CVE-2024-46800
published 2024-09-18

CVE-2024-46800: 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…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.27%
18.8th percentile
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

Affected

37 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
debianlinux-6.1< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
googlechrome_chrome
linuxlinux
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < f0bddb4de043399f16d1969dad5ee5b984a64e7bf0bddb4de043399f16d1969dad5ee5b984a64e7b
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < 295ad5afd9efc5f67b86c64fce28fb94e26dc4c9295ad5afd9efc5f67b86c64fce28fb94e26dc4c9
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < 98c75d76187944296068d685dfd8a1e9fd8c4fdc98c75d76187944296068d685dfd8a1e9fd8c4fdc
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < 14f91ab8d391f249b845916820a56f42cf74724114f91ab8d391f249b845916820a56f42cf747241
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < db2c235682913a63054e741fe4e19645fdf2d68edb2c235682913a63054e741fe4e19645fdf2d68e
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < dde33a9d0b80aae0c69594d1f462515d7ff1cb3ddde33a9d0b80aae0c69594d1f462515d7ff1cb3d
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < 32008ab989ddcff1a485fa2b4906234c25dc5cd632008ab989ddcff1a485fa2b4906234c25dc5cd6
linuxlinux>= 50612537e9ab29693122fab20fc1eed235054ffe < 3b3a2a9c6349e25a025d2330f479bc33a6ccb54a3b3a2a9c6349e25a025d2330f479bc33a6ccb54a
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.112-16.1.112-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-49.496.8.0-49.49
linuxlinux_kernel>= 0 < 4.4.0-261.2954.4.0-261.295
linuxlinux_kernel>= 0 < 4.15.0-231.2434.15.0-231.243
linuxlinux_kernel>= 3.3 < 4.19.3224.19.322
linuxlinux_kernel>= 4.20 < 5.4.2845.4.284
linuxlinux_kernel>= 5.11 < 5.15.1675.15.167

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.