cbcvebase.
CVE-2025-37915
published 2025-05-20

CVE-2025-37915: In the Linux kernel, the following vulnerability has been resolved: net_sched: drr: Fix double list add in class with netem as child qdisc As described in…

PriorityP430high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.17%
7.0th percentile
In the Linux kernel, the following vulnerability has been resolved: net_sched: drr: Fix double list add in class with netem as child qdisc As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of drr, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. In addition to checking for qlen being zero, this patch checks whether the class was already added to the active_list (cl_is_active) before adding to the list to cover for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/

Affected

47 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.140-1 (bookworm)linux 6.1.140-1 (bookworm)
debianlinux-6.1< linux 6.1.140-1 (bookworm)linux 6.1.140-1 (bookworm)
linuxlinux
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 5da3aad1a13e7edb8ff0778a444ccf49930313e95da3aad1a13e7edb8ff0778a444ccf49930313e9
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 4b07ac06b0a712923255aaf2691637693fc7100d4b07ac06b0a712923255aaf2691637693fc7100d
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 2968632880f1792007eedd12eeedf7f6e2b7e9f32968632880f1792007eedd12eeedf7f6e2b7e9f3
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 4f0ecf50cdf76da95828578a92f130b653ac2fcf4f0ecf50cdf76da95828578a92f130b653ac2fcf
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < db205b92dfe0501e5b92fb7cf00971d0e44ba3ebdb205b92dfe0501e5b92fb7cf00971d0e44ba3eb
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 26e75716b94d6ff9be5ea07d63675c4d189f30b426e75716b94d6ff9be5ea07d63675c4d189f30b4
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < ab2248110738d4429668140ad22f530a9ee730e1ab2248110738d4429668140ad22f530a9ee730e1
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < f99a3fbf023e20b626be4b0f042463d598050c9af99a3fbf023e20b626be4b0f042463d598050c9a
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.140-16.1.140-1
linuxlinux_kernel>= 0 < 6.12.29-16.12.29-1

CVSS provenance

nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.0HIGH
vendor_redhat7.0HIGH
vendor_msrc6.3MEDIUM
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