CVSS: 5.5EPSS: 0%CPEs: 9EXPL: 0CVE-2024-38558 – net: openvswitch: fix overwriting ct original tuple for ICMPv6
https://notcve.org/view.php?id=CVE-2024-38558
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix overwriting ct original tuple for ICMPv6 OVS_PACKET_CMD_EXECUTE has 3 main attributes: - OVS_PACKET_ATTR_KEY - Packet metadata in a netlink format. - OVS_PACKET_ATTR_PACKET - Binary packet content. - OVS_PACKET_ATTR_ACTIONS - Actions to execute on the packet. OVS_PACKET_ATTR_KEY is parsed first to populate sw_flow_key structure with the metadata like conntrack state, input port, recirculation id, etc. Then the packet itself gets parsed to populate the rest of the keys from the packet headers. Whenever the packet parsing code starts parsing the ICMPv6 header, it first zeroes out fields in the key corresponding to Neighbor Discovery information even if it is not an ND packet. It is an 'ipv6.nd' field. However, the 'ipv6' is a union that shares the space between 'nd' and 'ct_orig' that holds the original tuple conntrack metadata parsed from the OVS_PACKET_ATTR_KEY. ND packets should not normally have conntrack state, so it's fine to share the space, but normal ICMPv6 Echo packets or maybe other types of ICMPv6 can have the state attached and it should not be overwritten. The issue results in all but the last 4 bytes of the destination address being wiped from the original conntrack tuple leading to incorrect packet matching and potentially executing wrong actions in case this packet recirculates within the datapath or goes back to userspace. ND fields should not be accessed in non-ND packets, so not clearing them should be fine. Executing memset() only for actual ND packets to avoid the issue. Initializing the whole thing before parsing is needed because ND packet may not contain all the options. The issue only affects the OVS_PACKET_CMD_EXECUTE path and doesn't affect packets entering OVS datapath from network interfaces, because in this case CT metadata is populated from skb after the packet is already parsed. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: openvswitch: corrige la sobrescritura de la tupla original de ct para ICMPv6 OVS_PACKET_CMD_EXECUTE tiene 3 atributos principales: - OVS_PACKET_ATTR_KEY - Metadatos de paquetes en formato netlink. - OVS_PACKET_ATTR_PACKET: contenido del paquete binario. - OVS_PACKET_ATTR_ACTIONS: acciones a ejecutar en el paquete. • https://git.kernel.org/stable/c/9dd7f8907c3705dc7a7a375d1c6e30b06e6daffc https://git.kernel.org/stable/c/6a51ac92bf35d34b4996d6eb67e2fe469f573b11 https://git.kernel.org/stable/c/0b532f59437f688563e9c58bdc1436fefa46e3b5 https://git.kernel.org/stable/c/5ab6aecbede080b44b8e34720ab72050bf1e6982 https://git.kernel.org/stable/c/483eb70f441e2df66ade78aa7217e6e4caadfef3 https://git.kernel.org/stable/c/9ec8b0ccadb908d92f7ee211a4eff05fd932f3f6 https://git.kernel.org/stable/c/78741b4caae1e880368cb2f5110635f3ce45ecfd https://git.kernel.org/stable/c/431e9215576d7b728f3f53a704d237a52 • CWE-665: Improper Initialization •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-38553 – net: fec: remove .ndo_poll_controller to avoid deadlocks
https://notcve.org/view.php?id=CVE-2024-38553
In the Linux kernel, the following vulnerability has been resolved: net: fec: remove .ndo_poll_controller to avoid deadlocks There is a deadlock issue found in sungem driver, please refer to the commit ac0a230f719b ("eth: sungem: remove .ndo_poll_controller to avoid deadlocks"). The root cause of the issue is that netpoll is in atomic context and disable_irq() is called by .ndo_poll_controller interface of sungem driver, however, disable_irq() might sleep. After analyzing the implementation of fec_poll_controller(), the fec driver should have the same issue. Due to the fec driver uses NAPI for TX completions, the .ndo_poll_controller is unnecessary to be implemented in the fec driver, so fec_poll_controller() can be safely removed. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: fec: elimine .ndo_poll_controller para evitar interbloqueos. • https://git.kernel.org/stable/c/7f5c6addcdc039c1a7c435857e6284ecac5d97c8 https://git.kernel.org/stable/c/d38625f71950e79e254515c5fc585552dad4b33e https://git.kernel.org/stable/c/accdd6b912c4219b8e056d1f1ad2e85bc66ee243 https://git.kernel.org/stable/c/87bcbc9b7e0b43a69d44efa5f32f11e32d08fa6f https://git.kernel.org/stable/c/c2e0c58b25a0a0c37ec643255558c5af4450c9f5 •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2024-38549 – drm/mediatek: Add 0 size check to mtk_drm_gem_obj
https://notcve.org/view.php?id=CVE-2024-38549
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Add 0 size check to mtk_drm_gem_obj Add a check to mtk_drm_gem_init if we attempt to allocate a GEM object of 0 bytes. Currently, no such check exists and the kernel will panic if a userspace application attempts to allocate a 0x0 GBM buffer. Tested by attempting to allocate a 0x0 GBM buffer on an MT8188 and verifying that we now return EINVAL. En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: drm/mediatek: Agregar verificación de tamaño 0 a mtk_drm_gem_obj Agregar una verificación a mtk_drm_gem_init si intentamos asignar un objeto GEM de 0 bytes. Actualmente, no existe tal verificación y el kernel entrará en pánico si una aplicación de espacio de usuario intenta asignar un búfer GBM 0x0. Probado intentando asignar un búfer GBM 0x0 en un MT8188 y verificando que ahora devolvemos EINVAL. • https://git.kernel.org/stable/c/119f5173628aa7a0c3cf9db83460d40709e8241d https://git.kernel.org/stable/c/79078880795478d551a05acc41f957700030d364 https://git.kernel.org/stable/c/be34a1b351ea7faeb15dde8c44fe89de3980ae67 https://git.kernel.org/stable/c/d17b75ee9c2e44d3a3682c4ea5ab713ea6073350 https://git.kernel.org/stable/c/0e3b6f9123726858cac299e1654e3d20424cabe4 https://git.kernel.org/stable/c/13562c2d48c9ee330de1077d00146742be368f05 https://git.kernel.org/stable/c/af26ea99019caee1500bf7e60c861136c0bf8594 https://git.kernel.org/stable/c/9489951e3ae505534c4013db4e76b1b5a •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-38545 – RDMA/hns: Fix UAF for cq async event
https://notcve.org/view.php?id=CVE-2024-38545
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix UAF for cq async event The refcount of CQ is not protected by locks. When CQ asynchronous events and CQ destruction are concurrent, CQ may have been released, which will cause UAF. Use the xa_lock() to protect the CQ refcount. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: RDMA/hns: corrige UAF para el evento cq async El recuento de CQ no está protegido por bloqueos. Cuando los eventos asincrónicos de CQ y la destrucción de CQ son simultáneos, es posible que se haya liberado CQ, lo que provocará UAF. Utilice xa_lock() para proteger el recuento de CQ. • https://git.kernel.org/stable/c/9a4435375cd151e07c0c38fa601b00115986091b https://git.kernel.org/stable/c/763780ef0336a973e933e40e919339381732dcaf https://git.kernel.org/stable/c/63da190eeb5c9d849b71f457b15b308c94cbaf08 https://git.kernel.org/stable/c/39d26cf46306bdc7ae809ecfdbfeff5aa1098911 https://git.kernel.org/stable/c/37a7559dc1358a8d300437e99ed8ecdab0671507 https://git.kernel.org/stable/c/a942ec2745ca864cd8512142100e4027dc306a42 •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2024-38538 – net: bridge: xmit: make sure we have at least eth header len bytes
https://notcve.org/view.php?id=CVE-2024-38538
In the Linux kernel, the following vulnerability has been resolved: net: bridge: xmit: make sure we have at least eth header len bytes syzbot triggered an uninit value[1] error in bridge device's xmit path by sending a short (less than ETH_HLEN bytes) skb. To fix it check if we can actually pull that amount instead of assuming. Tested with dropwatch: drop at: br_dev_xmit+0xb93/0x12d0 [bridge] (0xffffffffc06739b3) origin: software timestamp: Mon May 13 11:31:53 2024 778214037 nsec protocol: 0x88a8 length: 2 original length: 2 drop reason: PKT_TOO_SMALL [1] BUG: KMSAN: uninit-value in br_dev_xmit+0x61d/0x1cb0 net/bridge/br_device.c:65 br_dev_xmit+0x61d/0x1cb0 net/bridge/br_device.c:65 __netdev_start_xmit include/linux/netdevice.h:4903 [inline] netdev_start_xmit include/linux/netdevice.h:4917 [inline] xmit_one net/core/dev.c:3531 [inline] dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3547 __dev_queue_xmit+0x34db/0x5350 net/core/dev.c:4341 dev_queue_xmit include/linux/netdevice.h:3091 [inline] __bpf_tx_skb net/core/filter.c:2136 [inline] __bpf_redirect_common net/core/filter.c:2180 [inline] __bpf_redirect+0x14a6/0x1620 net/core/filter.c:2187 ____bpf_clone_redirect net/core/filter.c:2460 [inline] bpf_clone_redirect+0x328/0x470 net/core/filter.c:2432 ___bpf_prog_run+0x13fe/0xe0f0 kernel/bpf/core.c:1997 __bpf_prog_run512+0xb5/0xe0 kernel/bpf/core.c:2238 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] bpf_test_run+0x499/0xc30 net/bpf/test_run.c:425 bpf_prog_test_run_skb+0x14ea/0x1f20 net/bpf/test_run.c:1058 bpf_prog_test_run+0x6b7/0xad0 kernel/bpf/syscall.c:4269 __sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5678 __do_sys_bpf kernel/bpf/syscall.c:5767 [inline] __se_sys_bpf kernel/bpf/syscall.c:5765 [inline] __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5765 x64_sys_call+0x96b/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net: bridge: xmit: asegúrese de tener al menos el encabezado eth len bytes syzbot desencadenó un error de valor uninit[1] en la ruta xmit del dispositivo puente al enviar un mensaje corto (menos de ETH_HLEN bytes) skb. Para solucionarlo, compruebe si realmente podemos retirar esa cantidad en lugar de suponerla. Probado con dropwatch: soltar en: br_dev_xmit+0xb93/0x12d0 [puente] (0xffffffffc06739b3) origen: marca de tiempo del software: lunes 13 de mayo 11:31:53 2024 778214037 protocolo nsec: 0x88a8 longitud: 2 longitud original: 2 motivo de caída: PKT_TOO_SMALL [1 ] ERROR: KMSAN: valor uninit en br_dev_xmit+0x61d/0x1cb0 net/bridge/br_device.c:65 br_dev_xmit+0x61d/0x1cb0 net/bridge/br_device.c:65 __netdev_start_xmit include/linux/netdevice.h:4903 [en línea] netdev_start_xmit include/linux/netdevice.h:4917 [en línea] xmit_one net/core/dev.c:3531 [en línea] dev_hard_start_xmit+0x247/0xa20 net/core/dev.c:3547 __dev_queue_xmit+0x34db/0x5350 net/core/dev .c:4341 dev_queue_xmit include/linux/netdevice.h:3091 [en línea] __bpf_tx_skb net/core/filter.c:2136 [en línea] __bpf_redirect_common net/core/filter.c:2180 [en línea] __bpf_redirect+0x14a6/0x1620 net/ Core/Filter.C: 2187 ____BPF_CLONE_REDIRECT NET/CORE/FILTRO.C: 2460 [Inline] BPF_CLONE_REDIRECT+0x328/0x470 NET/Core/Filter.c: 2432 ___ BPF_PROG_RUN+0X13FE/0XE0F0 KERNEL/BPF/BPF/CORE. 0xb5/0xe0 kernel/bpf/core.c:2238 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [en línea] __bpf_prog_run include/linux/filter.h:657 [en línea] bpf_prog_run include/linux/filter.h:664 [en línea ] bpf_test_run+0x499/0xc30 net/bpf/test_run.c:425 bpf_prog_test_run_skb+0x14ea/0x1f20 net/bpf/test_run.c:1058 bpf_prog_test_run+0x6b7/0xad0 kernel/bpf/syscall.c:4269 pf+0x6aa/0xd90 núcleo/ bpf/syscall.c:5678 __do_sys_bpf kernel/bpf/syscall.c:5767 [en línea] __se_sys_bpf kernel/bpf/syscall.c:5765 [en línea] __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5765 ys_call+0x96b /0x3b50 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:52 [en línea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+ 0x77/0x7f • https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 https://git.kernel.org/stable/c/28126b83f86ab9cc7936029c2dff845d3dcedba2 https://git.kernel.org/stable/c/1abb371147905ba250b4cc0230c4be7e90bea4d5 https://git.kernel.org/stable/c/f482fd4ce919836a49012b2d31b00fc36e2488f2 https://git.kernel.org/stable/c/5b5d669f569807c7ab07546e73c0741845a2547a https://git.kernel.org/stable/c/8bd67ebb50c0145fd2ca8681ab65eb7e8cde1afc https://access.redhat.com/security/cve/CVE-2024-38538 https://bugzilla.redhat.com/show_bug.cgi?id=2293461 • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •