cbcvebase.
CVE-2025-37913
published 2025-05-20

CVE-2025-37913: In the Linux kernel, the following vulnerability has been resolved: net_sched: qfq: Fix double list add in class with netem as child qdisc As described in…

PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.18%
8.2th percentile
In the Linux kernel, the following vulnerability has been resolved: net_sched: qfq: 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 qfq, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. This patch checks whether the class was already added to the agg->active list (cl_is_active) before doing the addition to cater for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/

Affected

48 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
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 < 041f410aec2c1751ee22b8b73ba05d38c3a6a602041f410aec2c1751ee22b8b73ba05d38c3a6a602
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 005a479540478a820c52de098e5e767e63e36f0a005a479540478a820c52de098e5e767e63e36f0a
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 0bf32d6fb1fcbf841bb9945570e0e2a70072c00f0bf32d6fb1fcbf841bb9945570e0e2a70072c00f
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 0aa23e0856b7cedb3c88d8e3d281c212c7e4fbeb0aa23e0856b7cedb3c88d8e3d281c212c7e4fbeb
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < a43783119e01849fbf2fe8855634e8989b240cb4a43783119e01849fbf2fe8855634e8989b240cb4
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 53bc0b55178bd59bdd4bcd16349505cabf54b1a253bc0b55178bd59bdd4bcd16349505cabf54b1a2
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < 370218e8ce711684acc4cdd3cc3c6dd7956bc165370218e8ce711684acc4cdd3cc3c6dd7956bc165
linuxlinux>= 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea < f139f37dcdf34b67f5bf92bc8e0f7f6b3ac63aa4f139f37dcdf34b67f5bf92bc8e0f7f6b3ac63aa4
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

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_redhat7.8HIGH
vendor_msrc6.3MEDIUM
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