CVE - CVE-2024-46800

CVE-ID
CVE-2024-46800	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/14f91ab8d391f249b845916820a56f42cf747241 URL:https://git.kernel.org/stable/c/14f91ab8d391f249b845916820a56f42cf747241 MISC:https://git.kernel.org/stable/c/295ad5afd9efc5f67b86c64fce28fb94e26dc4c9 URL:https://git.kernel.org/stable/c/295ad5afd9efc5f67b86c64fce28fb94e26dc4c9 MISC:https://git.kernel.org/stable/c/32008ab989ddcff1a485fa2b4906234c25dc5cd6 URL:https://git.kernel.org/stable/c/32008ab989ddcff1a485fa2b4906234c25dc5cd6 MISC:https://git.kernel.org/stable/c/3b3a2a9c6349e25a025d2330f479bc33a6ccb54a URL:https://git.kernel.org/stable/c/3b3a2a9c6349e25a025d2330f479bc33a6ccb54a MISC:https://git.kernel.org/stable/c/98c75d76187944296068d685dfd8a1e9fd8c4fdc URL:https://git.kernel.org/stable/c/98c75d76187944296068d685dfd8a1e9fd8c4fdc MISC:https://git.kernel.org/stable/c/db2c235682913a63054e741fe4e19645fdf2d68e URL:https://git.kernel.org/stable/c/db2c235682913a63054e741fe4e19645fdf2d68e MISC:https://git.kernel.org/stable/c/dde33a9d0b80aae0c69594d1f462515d7ff1cb3d URL:https://git.kernel.org/stable/c/dde33a9d0b80aae0c69594d1f462515d7ff1cb3d MISC:https://git.kernel.org/stable/c/f0bddb4de043399f16d1969dad5ee5b984a64e7b URL:https://git.kernel.org/stable/c/f0bddb4de043399f16d1969dad5ee5b984a64e7b
Assigning CNA
kernel.org
Date Record Created
20240911	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240911)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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