cbcvebase.
CVE-2024-50041
published 2024-10-21

CVE-2024-50041: In the Linux kernel, the following vulnerability has been resolved: i40e: Fix macvlan leak by synchronizing access to mac_filter_hash This patch addresses a…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
13.7th percentile
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix macvlan leak by synchronizing access to mac_filter_hash This patch addresses a macvlan leak issue in the i40e driver caused by concurrent access to vsi->mac_filter_hash. The leak occurs when multiple threads attempt to modify the mac_filter_hash simultaneously, leading to inconsistent state and potential memory leaks. To fix this, we now wrap the calls to i40e_del_mac_filter() and zeroing vf->default_lan_addr.addr with spin_lock/unlock_bh(&vsi->mac_filter_hash_lock), ensuring atomic operations and preventing concurrent access. Additionally, we add lockdep_assert_held(&vsi->mac_filter_hash_lock) in i40e_add_mac_filter() to help catch similar issues in the future. Reproduction steps: 1. Spawn VFs and configure port vlan on them. 2. Trigger concurrent macvlan operations (e.g., adding and deleting portvlan and/or mac filters). 3. Observe the potential memory leak and inconsistent state in the mac_filter_hash. This synchronization ensures the integrity of the mac_filter_hash and prevents the described leak.

Affected

32 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.115-1 (bookworm)linux 6.1.115-1 (bookworm)
debianlinux-6.1< linux 6.1.115-1 (bookworm)linux 6.1.115-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux>= 5.15.54 < 5.15.1685.15.168
linuxlinux>= 5.18.11 < 5.195.19
linuxlinux>= ddec6cbbe22781d17965f1e6386e5a6363c058d2 < 9db6ce9e2738b05a3672aff4d42169cf3bb5a3e39db6ce9e2738b05a3672aff4d42169cf3bb5a3e3
linuxlinux>= fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 < 9a9747288ba0a9ad4f5c9877f18dd245770ad64e9a9747288ba0a9ad4f5c9877f18dd245770ad64e
linuxlinux>= fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 < 703c4d820b31bcadf465288d5746c53445f02a55703c4d820b31bcadf465288d5746c53445f02a55
linuxlinux>= fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 < 8831abff1bd5b6bc8224f0c0671f46fbd702b5b28831abff1bd5b6bc8224f0c0671f46fbd702b5b2
linuxlinux>= fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 < dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fbdac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.1.115-16.1.115-1
linuxlinux_kernel>= 0 < 6.11.4-16.11.4-1
linuxlinux_kernel>= 0 < 6.11.4-16.11.4-1
linuxlinux_kernel>= 0 < 5.15.0-127.1375.15.0-127.137
linuxlinux_kernel>= 0 < 6.8.0-56.586.8.0-56.58
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 5.15.54 < 5.15.1685.15.168
linuxlinux_kernel>= 5.18.11 < 5.195.19
linuxlinux_kernel>= 5.19 < 6.1.1136.1.113
linuxlinux_kernel>= 6.2 < 6.6.576.6.57
linuxlinux_kernel>= 6.7 < 6.11.46.11.4
msrcazl3_kernel_6.6.56.1-5_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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