CVSS: 6.3EPSS: 0%CPEs: 7EXPL: 0CVE-2024-38544 – RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
https://notcve.org/view.php?id=CVE-2024-38544
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale. This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: RDMA/rxe: corrige la falla de segmentación en rxe_comp_queue_pkt En rxe_comp_queue_pkt(), un paquete de respuesta entrante skb se pone en cola en la cola resp_pkts y luego se toma una decisión si se ejecuta la tarea de finalización en línea o programarla. • https://git.kernel.org/stable/c/0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4 https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19 https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794 https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b60 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 4.1EPSS: 0%CPEs: 5EXPL: 0CVE-2024-38543 – lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure
https://notcve.org/view.php?id=CVE-2024-38543
In the Linux kernel, the following vulnerability has been resolved: lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure The kcalloc() in dmirror_device_evict_chunk() will return null if the physical memory has run out. As a result, if src_pfns or dst_pfns is dereferenced, the null pointer dereference bug will happen. Moreover, the device is going away. If the kcalloc() fails, the pages mapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in kcalloc(). Finally, as there is no need to have physically contiguous memory, Switch kcalloc() to kvcalloc() in order to avoid failing allocations. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: lib/test_hmm.c: maneja el error de asignación de src_pfns y dst_pfns El kcalloc() en dmirror_device_evict_chunk() devolverá nulo si la memoria física se ha agotado. • https://git.kernel.org/stable/c/b2ef9f5a5cb37643ca5def3516c546457074b882 https://git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64 https://git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33 https://git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7 https://git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc https://git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3 https://access.redhat.com/security/cve/CVE-2024-38543 https://bugzilla.redhat.com/show_bug.cgi?id=2293456 • CWE-476: NULL Pointer Dereference •
CVSS: 9.8EPSS: 0%CPEs: 4EXPL: 0CVE-2024-38541 – of: module: add buffer overflow check in of_modalias()
https://notcve.org/view.php?id=CVE-2024-38541
In the Linux kernel, the following vulnerability has been resolved: of: module: add buffer overflow check in of_modalias() In of_modalias(), if the buffer happens to be too small even for the 1st snprintf() call, the len parameter will become negative and str parameter (if not NULL initially) will point beyond the buffer's end. Add the buffer overflow check after the 1st snprintf() call and fix such check after the strlen() call (accounting for the terminating NUL char). En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: of: módulo: agregar control de desbordamiento del búfer of_modalias() En of_modalias(), si el búfer es demasiado pequeño incluso para la primera llamada a snprintf(), el parámetro len se vuelve negativo y el parámetro str (si no es NULL inicialmente) apuntará más allá del final del búfer. Agregue la verificación de desbordamiento del búfer después de la primera llamada a snprintf() y corrija dicha verificación después de la llamada strlen() (teniendo en cuenta el carácter NUL de terminación). • https://git.kernel.org/stable/c/bc575064d688c8933a6ca51429bea9bc63628d3b https://git.kernel.org/stable/c/0b0d5701a8bf02f8fee037e81aacf6746558bfd6 https://git.kernel.org/stable/c/ee332023adfd5882808f2dabf037b32d6ce36f9e https://git.kernel.org/stable/c/e45b69360a63165377b30db4a1dfddd89ca18e9a https://git.kernel.org/stable/c/cf7385cb26ac4f0ee6c7385960525ad534323252 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 4.4EPSS: 0%CPEs: 4EXPL: 0CVE-2024-38540 – bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq
https://notcve.org/view.php?id=CVE-2024-38540
In the Linux kernel, the following vulnerability has been resolved: bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq Undefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called with hwq_attr->aux_depth != 0 and hwq_attr->aux_stride == 0. In that case, "roundup_pow_of_two(hwq_attr->aux_stride)" gets called. roundup_pow_of_two is documented as undefined for 0. Fix it in the one caller that had this combination. The undefined behavior was detected by UBSAN: UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13 shift exponent 64 is too large for 64-bit type 'long unsigned int' CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4 Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023 Call Trace: <TASK> dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x30 __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec __roundup_pow_of_two+0x25/0x35 [bnxt_re] bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re] bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re] bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re] ? srso_alias_return_thunk+0x5/0xfbef5 ? srso_alias_return_thunk+0x5/0xfbef5 ? • https://git.kernel.org/stable/c/0c4dcd602817502bb3dced7a834a13ef717d65a4 https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98 https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753 https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659 https://access.redhat.com/security/cve/CVE-2024-38540 https://bugzilla.redhat.com/show_bug.cgi?id=2293459 • CWE-125: Out-of-bounds Read •
CVSS: 7.1EPSS: 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') •