CVSS: 3.3EPSS: 0%CPEs: 7EXPL: 0CVE-2023-52703 – net/usb: kalmia: Don't pass act_len in usb_bulk_msg error path
https://notcve.org/view.php?id=CVE-2023-52703
In the Linux kernel, the following vulnerability has been resolved: net/usb: kalmia: Don't pass act_len in usb_bulk_msg error path syzbot reported that act_len in kalmia_send_init_packet() is uninitialized when passing it to the first usb_bulk_msg error path. Jiri Pirko noted that it's pointless to pass it in the error path, and that the value that would be printed in the second error path would be the value of act_len from the first call to usb_bulk_msg.[1] With this in mind, let's just not pass act_len to the usb_bulk_msg error paths. 1: https://lore.kernel.org/lkml/Y9pY61y1nwTuzMOa@nanopsycho/ En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net/usb: kalmia: No pasar act_len en la ruta de error usb_bulk_msg syzbot informó que act_len en kalmia_send_init_packet() no está inicializado al pasarlo a la primera ruta de error usb_bulk_msg. Jiri Pirko señaló que no tiene sentido pasarlo en la ruta de error y que el valor que se imprimiría en la segunda ruta de error sería el valor de act_len de la primera llamada a usb_bulk_msg.[1] Con esto en mente, simplemente no pasemos act_len a las rutas de error usb_bulk_msg. 1: https://lore.kernel.org/lkml/Y9pY61y1nwTuzMOa@nanopsycho/ • https://git.kernel.org/stable/c/d40261236e8e278cb1936cb5e934262971692b10 https://git.kernel.org/stable/c/1b5de7d44890b78519acbcc80d8d1f23ff2872e5 https://git.kernel.org/stable/c/723ef7b66f37c0841f5a451ccbce47ee1641e081 https://git.kernel.org/stable/c/a753352622b4f3c0219e0e9c73114b2848ae6042 https://git.kernel.org/stable/c/525bdcb0838d19d918c7786151ee14661967a030 https://git.kernel.org/stable/c/338f826d3afead6e4df521f7972a4bef04a72efb https://git.kernel.org/stable/c/02df3170c04a8356cd571ab9155a42f030190abc https://git.kernel.org/stable/c/c68f345b7c425b38656e1791a0486769a • CWE-15: External Control of System or Configuration Setting •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2022-48706 – vdpa: ifcvf: Do proper cleanup if IFCVF init fails
https://notcve.org/view.php?id=CVE-2022-48706
In the Linux kernel, the following vulnerability has been resolved: vdpa: ifcvf: Do proper cleanup if IFCVF init fails ifcvf_mgmt_dev leaks memory if it is not freed before returning. Call is made to correct return statement so memory does not leak. ifcvf_init_hw does not take care of this so it is needed to do it here. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: vdpa: ifcvf: realice una limpieza adecuada si falla el inicio de IFCVF. ifcvf_mgmt_dev pierde memoria si no se libera antes de regresar. Se realiza una llamada para corregir la declaración de devolución para que no se pierda memoria. ifcvf_init_hw no se encarga de esto, por lo que es necesario hacerlo aquí. • https://git.kernel.org/stable/c/5d2cc32c1c10bd889125d2adc16a6bc3338dcd3e https://git.kernel.org/stable/c/6b04456e248761cf68f562f2fd7c04e591fcac94 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47431 – drm/amdgpu: fix gart.bo pin_count leak
https://notcve.org/view.php?id=CVE-2021-47431
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix gart.bo pin_count leak gmc_v{9,10}_0_gart_disable() isn't called matched with correspoding gart_enbale function in SRIOV case. This will lead to gart.bo pin_count leak on driver unload. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amdgpu: corrige la fuga de pin_count de gart.bo gmc_v{9,10}_0_gart_disable() no se llama y coincide con la función gart_enbale correspondiente en el caso SRIOV. Esto provocará una pérdida de pin_count de gart.bo al descargar el controlador. • https://git.kernel.org/stable/c/83d857d6b0967b6709cd38750c3ce2ed8ced1a95 https://git.kernel.org/stable/c/621ddffb70db824eabd63d18ac635180fe9500f9 https://git.kernel.org/stable/c/18d1c5ea3798ba42cfa0f8b2264d873463facb03 https://git.kernel.org/stable/c/66805763a97f8f7bdf742fc0851d85c02ed9411f •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47418 – net_sched: fix NULL deref in fifo_set_limit()
https://notcve.org/view.php?id=CVE-2021-47418
In the Linux kernel, the following vulnerability has been resolved: net_sched: fix NULL deref in fifo_set_limit() syzbot reported another NULL deref in fifo_set_limit() [1] I could repro the issue with : unshare -n tc qd add dev lo root handle 1:0 tbf limit 200000 burst 70000 rate 100Mbit tc qd replace dev lo parent 1:0 pfifo_fast tc qd change dev lo root handle 1:0 tbf limit 300000 burst 70000 rate 100Mbit pfifo_fast does not have a change() operation. Make fifo_set_limit() more robust about this. [1] BUG: kernel NULL pointer dereference, address: 0000000000000000 PGD 1cf99067 P4D 1cf99067 PUD 7ca49067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 14443 Comm: syz-executor959 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc9000e2f7310 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff8d6ecc00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888024c27910 RDI: ffff888071e34000 RBP: ffff888071e34000 R08: 0000000000000001 R09: ffffffff8fcfb947 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888024c27910 R13: ffff888071e34018 R14: 0000000000000000 R15: ffff88801ef74800 FS: 00007f321d897700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000000722c3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fifo_set_limit net/sched/sch_fifo.c:242 [inline] fifo_set_limit+0x198/0x210 net/sched/sch_fifo.c:227 tbf_change+0x6ec/0x16d0 net/sched/sch_tbf.c:418 qdisc_change net/sched/sch_api.c:1332 [inline] tc_modify_qdisc+0xd9a/0x1a60 net/sched/sch_api.c:1634 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net_sched: corrige el deref NULL en fifo_set_limit() syzbot informó otro deref NULL en fifo_set_limit() [1] Podría reproducir el problema con: unshare -n tc qd add dev lo root handle 1:0 tbf limit 200000 burst 70000 rate 100Mbit tc qd reemplazar dev lo parent 1:0 pfifo_fast tc qd cambiar dev lo root handle 1:0 tbf limit 300000 burst 70000 rate 100Mbit pfifo_fast no tiene una operación de cambio(). Haga que fifo_set_limit() sea más sólido al respecto. [1] BUG: desreferencia del puntero NULL del kernel, dirección: 0000000000000000 PGD 1cf99067 P4D 1cf99067 PUD 7ca49067 PMD 0 Ups: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 14443 Comm: syz-executor959 No contaminado 5. 15.0-rc3- syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0x0 Código: No se puede acceder a los bytes del código de operación en RIP 0xffffffffffffffd6. RSP: 0018:ffffc9000e2f7310 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff8d6ecc00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: c27910 RDI: ffff888071e34000 RBP: ffff888071e34000 R08: 0000000000000001 R09: ffffffff8fcfb947 R10: 00000000000000001 R11: 0000000000000000 R12 : ffff888024c27910 R13: ffff888071e34018 R14: 00000000000000000 R15: ffff88801ef74800 FS: 00007f321d897700(0000) GS:ffff8880b9d00000(0000) knlGS:00000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 50033 CR2: ffffffffffffffd6 CR3: 00000000722c3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 00000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: fifo_set_limit net/sched/sch_fifo.c:242 [en línea] fifo_set_limit+0x198/0x210 net/sched/sch_fifo.c:227 6ec/0x16d0 net/sched/sch_tbf.c: 418 qdisc_change net/sched/sch_api.c:1332 [en línea] tc_modify_qdisc+0xd9a/0x1a60 net/sched/sch_api.c:1634 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572 netlink_rcv_skb+0x153/0x42 0 red/enlace de red /af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [en línea] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/ socket.c:704 [en línea] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0 x1b0 neto /socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [en línea] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae • https://git.kernel.org/stable/c/fb0305ce1b03f6ff17f84f2c63daccecb45f2805 https://git.kernel.org/stable/c/0dd7ddc462b9c2d31eb5a9926a2cc63eaa3e9f52 https://git.kernel.org/stable/c/08d7056e8e250fd2e67dbea5be5fdecdd75bf6b4 https://git.kernel.org/stable/c/26af64d71b6277841285fa40e3f7164a378dfda9 https://git.kernel.org/stable/c/d07098f45be868a9cdce6c616563c36c64dbbd87 https://git.kernel.org/stable/c/c951a3be5e8803e93bb49a0aca0d30457d3c1b67 https://git.kernel.org/stable/c/acff2d182c0768a713cee77442caeb07668bd68f https://git.kernel.org/stable/c/fb58cd7991747b5e0b110c98c922d7b0e •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47416 – phy: mdio: fix memory leak
https://notcve.org/view.php?id=CVE-2021-47416
In the Linux kernel, the following vulnerability has been resolved: phy: mdio: fix memory leak Syzbot reported memory leak in MDIO bus interface, the problem was in wrong state logic. MDIOBUS_ALLOCATED indicates 2 states: 1. Bus is only allocated 2. Bus allocated and __mdiobus_register() fails, but device_register() was called In case of device_register() has been called we should call put_device() to correctly free the memory allocated for this device, but mdiobus_free() calls just kfree(dev) in case of MDIOBUS_ALLOCATED state To avoid this behaviour we need to set bus->state to MDIOBUS_UNREGISTERED _before_ calling device_register(), because put_device() should be called even in case of device_register() failure. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: phy: mdio: arreglar pérdida de memoria. Syzbot informó una pérdida de memoria en la interfaz del bus MDIO, el problema estaba en una lógica de estado incorrecta. • https://git.kernel.org/stable/c/46abc02175b3c246dd5141d878f565a8725060c9 https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639 https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7 https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6 https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988 https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974 •