CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47520 – can: pch_can: pch_can_rx_normal: fix use after free
https://notcve.org/view.php?id=CVE-2021-47520
In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: pch_can: pch_can_rx_normal: corregir el use after free después de llamar a netif_receive_skb(skb), desreferenciar skb no es seguro. • https://git.kernel.org/stable/c/b21d18b51b31a24d17f883b678432fbdee3d5675 https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76 https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3 https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4 https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb • CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47519 – can: m_can: m_can_read_fifo: fix memory leak in error branch
https://notcve.org/view.php?id=CVE-2021-47519
In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_read_fifo: fix memory leak in error branch In m_can_read_fifo(), if the second call to m_can_fifo_read() fails, the function jump to the out_fail label and returns without calling m_can_receive_skb(). ... En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: m_can: m_can_read_fifo: corrige la pérdida de memoria en la rama de error En m_can_read_fifo(), si la segunda llamada a m_can_fifo_read() falla, la función salta a la etiqueta out_fail y regresa sin llamar m_can_receive_skb(). • https://git.kernel.org/stable/c/e39381770ec9ca3c51d8b9bd9cc6e01d78ea974a https://git.kernel.org/stable/c/75a422165477dd12d2d20aa7c9ee7c9a281c9908 https://git.kernel.org/stable/c/31cb32a590d62b18f69a9a6d433f4e69c74fdd56 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47518 – nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done
https://notcve.org/view.php?id=CVE-2021-47518
In the Linux kernel, the following vulnerability has been resolved: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done The done() netlink callback nfc_genl_dump_ses_done() should check if received argument is non-NULL, because its allocation could fail earlier in dumpit() (nfc_genl_dump_ses()). En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nfc: corrige la posible deref del puntero NULL en nfc_genl_dump_ses_done La devolución de llamada de netlink done() nfc_genl_dump_ses_done() debe verificar si el argumento recibido no es NULL, porque su asignación podría fallar antes en dumpit() (nfc_genl_dump_ses()). • https://git.kernel.org/stable/c/ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 https://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00ed https://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18 https://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566fa https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a https://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38c https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d2234 • CWE-476: NULL Pointer Dereference •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2021-47517 – ethtool: do not perform operations on net devices being unregistered
https://notcve.org/view.php?id=CVE-2021-47517
In the Linux kernel, the following vulnerability has been resolved: ethtool: do not perform operations on net devices being unregistered There is a short period between a net device starts to be unregistered and when it is actually gone. ... This patch targets the netlink part as the ioctl one isn't affected: the reference to the net device is taken and the operation is executed within an rtnl lock section and the net device won't be found after unregister. [1] For example adding Tx queues after unregister ends up in NULL pointer exceptions and UaFs, such as: BUG: KASAN: use-after-free in kobject_get+0x14/0x90 Read of size 1 at addr ffff88801961248c by task ethtool/755 CPU: 0 PID: 755 Comm: ethtool Not tainted 5.15.0-rc6+ #778 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/014 Call Trace: dump_stack_lvl+0x57/0x72 print_address_description.constprop.0+0x1f/0x140 kasan_report.cold+0x7f/0x11b kobject_get+0x14/0x90 kobject_add_internal+0x3d1/0x450 kobject_init_and_add+0xba/0xf0 netdev_queue_update_kobjects+0xcf/0x200 netif_set_real_num_tx_queues+0xb4/0x310 veth_set_channels+0x1c3/0x550 ethnl_set_channels+0x524/0x610 En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ethtool: no realiza operaciones en dispositivos de red que se están dando de baja. • https://git.kernel.org/stable/c/041b1c5d4a53e97fc9e029ae32469552ca12cb9b https://git.kernel.org/stable/c/7c26da3be1e9843a15b5318f90db8a564479d2ac https://git.kernel.org/stable/c/cfd719f04267108f5f5bf802b9d7de69e99a99f9 https://git.kernel.org/stable/c/dde91ccfa25fd58f64c397d91b81a4b393100ffa •
CVSS: 5.5EPSS: 0%CPEs: 6EXPL: 0CVE-2021-47516 – nfp: Fix memory leak in nfp_cpp_area_cache_add()
https://notcve.org/view.php?id=CVE-2021-47516
In the Linux kernel, the following vulnerability has been resolved: nfp: Fix memory leak in nfp_cpp_area_cache_add() In line 800 (#1), nfp_cpp_area_alloc() allocates and initializes a CPP area structure. ... cache) 807 return -ENOMEM; // #2: missing free 817 return 0; 818 } En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nfp: corrige la pérdida de memoria en nfp_cpp_area_cache_add() En la línea 800 (#1), nfp_cpp_area_alloc() asigna e inicializa una estructura de área CPP. • https://git.kernel.org/stable/c/4cb584e0ee7df70fd0376aee60cf701855ea8c81 https://git.kernel.org/stable/c/3e93abcdcec0436fbf0b6a88ae806902426895a2 https://git.kernel.org/stable/c/eb51f639ef3fd5498b7def290ed8681b6aadd9a7 https://git.kernel.org/stable/c/2e0e072e62fdaf7816220af08e05c020f0fcb77a https://git.kernel.org/stable/c/484069b5de9d223cc1c64c6f80389a99cfef51f1 https://git.kernel.org/stable/c/f707820c09239d6f67699d9b2ff57863cc7905b0 https://git.kernel.org/stable/c/c56c96303e9289cc34716b1179597b6f470833de • CWE-401: Missing Release of Memory after Effective Lifetime •