cbcvebase.
CVE-2026-23080
published 2026-02-04

CVE-2026-23080: In the Linux kernel, the following vulnerability has been resolved: can: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak Fix similar memory leak…

PriorityP416medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.12%
2.5th percentile
In the Linux kernel, the following vulnerability has been resolved: can: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak"). In mcba_usb_probe() -> mcba_usb_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback mcba_usb_read_bulk_callback(), the URBs are processed and resubmitted. In mcba_usb_close() -> mcba_urb_unlink() the URBs are freed by calling usb_kill_anchored_urbs(&priv->rx_submitted). However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in usb_kill_anchored_urbs(). Fix the memory leak by anchoring the URB in the mcba_usb_read_bulk_callback()to the priv->rx_submitted anchor.

Affected

62 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
debianlinux-6.1< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
linuxlinux
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < 8b34c611a4feb81921bc4728c091e4e3ba0270c08b34c611a4feb81921bc4728c091e4e3ba0270c0
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < b5a1ccdc63b71d93a69a6b72f7a3f3934293ea60b5a1ccdc63b71d93a69a6b72f7a3f3934293ea60
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < 59153b6388e05609144ad56a9b354e9100a9198359153b6388e05609144ad56a9b354e9100a91983
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < 179f6f0cf5ae489743273b7c1644324c0c477ea9179f6f0cf5ae489743273b7c1644324c0c477ea9
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < 94c9f6f7b953f6382fef4bdc48c046b861b8868f94c9f6f7b953f6382fef4bdc48c046b861b8868f
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < d374d715e338dfc3804aaa006fa6e470ffebb264d374d715e338dfc3804aaa006fa6e470ffebb264
linuxlinux>= 51f3baad7de943780ce0c17bd7975df567dd6e14 < 710a7529fb13c5a470258ff5508ed3c498d54729710a7529fb13c5a470258ff5508ed3c498d54729
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.249-15.10.249-1
linuxlinux_kernel>= 0 < 6.1.162-16.1.162-1
linuxlinux_kernel>= 0 < 6.12.69-16.12.69-1
linuxlinux_kernel>= 0 < 6.18.8-16.18.8-1
linuxlinux_kernel>= 4.12 < 5.10.2495.10.249
linuxlinux_kernel>= 5.11 < 5.15.1995.15.199
linuxlinux_kernel>= 5.16 < 6.1.1626.1.162
linuxlinux_kernel>= 6.13 < 6.18.86.18.8
linuxlinux_kernel>= 6.2 < 6.6.1226.6.122
linuxlinux_kernel>= 6.7 < 6.12.686.12.68
ubuntulinux
ubuntulinux-aws
ubuntulinux-aws-fips
ubuntulinux-azure

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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