cbcvebase.
CVE-2024-45016
published 2024-09-11

CVE-2024-45016: In the Linux kernel, the following vulnerability has been resolved: netem: fix return value if duplicate enqueue fails There is a bug in netem_enqueue()…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.4th percentile
In the Linux kernel, the following vulnerability has been resolved: netem: fix return value if duplicate enqueue fails There is a bug in netem_enqueue() introduced by commit 5845f706388a ("net: netem: fix skb length BUG_ON in __skb_to_sgvec") that can lead to a use-after-free. This commit made netem_enqueue() always return NET_XMIT_SUCCESS when a packet is duplicated, which can cause the parent qdisc's q.qlen to be mistakenly incremented. When this happens qlen_notify() may be skipped on the parent during destruction, leaving a dangling pointer for some classful qdiscs like DRR. There are two ways for the bug happen: - If the duplicated packet is dropped by rootq->enqueue() and then the original packet is also dropped. - If rootq->enqueue() sends the duplicated packet to a different qdisc and the original packet is dropped. In both cases NET_XMIT_SUCCESS is returned even though no packets are enqueued at the netem qdisc. The fix is to defer the enqueue of the duplicate packet until after the original packet has been guaranteed to return NET_XMIT_SUCCESS.

Affected

47 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)
linuxlinux
linuxlinux
linuxlinux
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 3.16.66 < 3.173.17
linuxlinux>= 4.14.106 < 4.154.15
linuxlinux>= 4.19.28 < 4.204.20
linuxlinux>= 4.20.15 < 4.214.21
linuxlinux>= 4.9.163 < 4.104.10
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < 759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4759e3e8c4a6a6b4e52ebc4547123a457f0ce90d4
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < c414000da1c2ea1ba9a5e5bb1a4ba774e51e202dc414000da1c2ea1ba9a5e5bb1a4ba774e51e202d
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < 52d99a69f3d556c6426048c9d481b912205919d852d99a69f3d556c6426048c9d481b912205919d8
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < 0486d31dd8198e22b63a4730244b38fffce6d4690486d31dd8198e22b63a4730244b38fffce6d469
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < 577d6c0619467fe90f7e8e57e45cb5bd9d936014577d6c0619467fe90f7e8e57e45cb5bd9d936014
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < e5bb2988a310667abed66c7d3ffa28880cf0f883e5bb2988a310667abed66c7d3ffa28880cf0f883
linuxlinux>= 5845f706388a4cde0f6b80f9e5d33527e942b7d9 < c07ff8592d57ed258afee5a5e04991a48dbaf382c07ff8592d57ed258afee5a5e04991a48dbaf382
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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