CVSS: 2.3EPSS: 0%CPEs: 5EXPL: 0CVE-2021-47073 – platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios
https://notcve.org/view.php?id=CVE-2021-47073
In the Linux kernel, the following vulnerability has been resolved: platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios init_dell_smbios_wmi() only registers the dell_smbios_wmi_driver on systems where the Dell WMI interface is supported. While exit_dell_smbios_wmi() unregisters it unconditionally, this leads to the following oops: [ 175.722921] ------------[ cut here ]------------ [ 175.722925] Unexpected driver unregister! [ 175.722939] WARNING: CPU: 1 PID: 3630 at drivers/base/driver.c:194 driver_unregister+0x38/0x40 ... [ 175.723089] Call Trace: [ 175.723094] cleanup_module+0x5/0xedd [dell_smbios] ... [ 175.723148] ---[ end trace 064c34e1ad49509d ]--- Make the unregister happen on the same condition the register happens to fix this. • https://git.kernel.org/stable/c/1a258e670434f404a4500b65ba1afea2c2b29bba https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e https://access.redhat.com/security/cve/CVE-2021-47073 https://bugzilla.redhat.com/show_bug.cgi?id=2267518 • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47071 – uio_hv_generic: Fix a memory leak in error handling paths
https://notcve.org/view.php?id=CVE-2021-47071
In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix a memory leak in error handling paths If 'vmbus_establish_gpadl()' fails, the (recv|send)_gpadl will not be updated and 'hv_uio_cleanup()' in the error handling path will not be able to free the corresponding buffer. In such a case, we need to free the buffer explicitly. • https://git.kernel.org/stable/c/cdfa835c6e5e87d145f9f632b58843de97509f2b https://git.kernel.org/stable/c/cdd91637d4ef33e2be19a8e16e72e7d00c996d76 https://git.kernel.org/stable/c/d84b5e912212b05f6b5bde9f682046accfbe0354 https://git.kernel.org/stable/c/53486c467e356e06aa37047c984fccd64d78c827 https://git.kernel.org/stable/c/3ee098f96b8b6c1a98f7f97915f8873164e6af9d •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47070 – uio_hv_generic: Fix another memory leak in error handling paths
https://notcve.org/view.php?id=CVE-2021-47070
In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix another memory leak in error handling paths Memory allocated by 'vmbus_alloc_ring()' at the beginning of the probe function is never freed in the error handling path. Add the missing 'vmbus_free_ring()' call. Note that it is already freed in the .remove function. • https://git.kernel.org/stable/c/cdfa835c6e5e87d145f9f632b58843de97509f2b https://git.kernel.org/stable/c/5f59240cf25b2f7a0fdffc2701482a70310fec07 https://git.kernel.org/stable/c/0b0226be3a52dadd965644bc52a807961c2c26df •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2021-47068 – net/nfc: fix use-after-free llcp_sock_bind/connect
https://notcve.org/view.php?id=CVE-2021-47068
In the Linux kernel, the following vulnerability has been resolved: net/nfc: fix use-after-free llcp_sock_bind/connect Commits 8a4cd82d ("nfc: fix refcount leak in llcp_sock_connect()") and c33b1cc62 ("nfc: fix refcount leak in llcp_sock_bind()") fixed a refcount leak bug in bind/connect but introduced a use-after-free if the same local is assigned to 2 different sockets. This can be triggered by the following simple program: int sock1 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP ); int sock2 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP ); memset( &addr, 0, sizeof(struct sockaddr_nfc_llcp) ); addr.sa_family = AF_NFC; addr.nfc_protocol = NFC_PROTO_NFC_DEP; bind( sock1, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) ) bind( sock2, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) ) close(sock1); close(sock2); Fix this by assigning NULL to llcp_sock->local after calling nfc_llcp_local_put. This addresses CVE-2021-23134. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/nfc: corrige use-after-free llcp_sock_bind/connect Commits 8a4cd82d ("nfc: corrige la fuga de refcount en llcp_sock_connect()") y c33b1cc62 ("nfc: corrige la fuga de refcount en llcp_sock_bind()") corrigió un error de fuga de recuento en bind/connect pero introdujo un Use-After-Free si el mismo local está asignado a 2 sockets diferentes. Esto puede activarse mediante el siguiente programa simple: int sock1 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP ); int sock2 = conector (AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP); memset( &addr, 0, sizeof(struct sockaddr_nfc_llcp) ); addr.sa_family = AF_NFC; addr.nfc_protocol = NFC_PROTO_NFC_DEP; bind( sock1, (struct sockaddr*) & addr, sizeof(struct sockaddr_nfc_llcp) ) bind( sock2, (struct sockaddr*) & addr, sizeof(struct sockaddr_nfc_llcp) ) close(sock1); cerrar(calcetín2); Solucione este problema asignando NULL a llcp_sock->local después de llamar a nfc_llcp_local_put. Esto aborda CVE-2021-23134. • https://git.kernel.org/stable/c/a1cdd18c49d23ec38097ac2c5b0d761146fc0109 https://git.kernel.org/stable/c/18013007b596771bf5f5e7feee9586fb0386ad14 https://git.kernel.org/stable/c/538a6ff11516d38a61e237d2d2dc04c30c845fbe https://git.kernel.org/stable/c/adbb1d218c5f56dbae052765da83c0f57fce2a31 https://git.kernel.org/stable/c/c89903c9eff219a4695e63715cf922748d743f65 https://git.kernel.org/stable/c/6fb003e5ae18d8cda4c8a1175d9dd8db12bec049 https://git.kernel.org/stable/c/8c9e4971e142e2899606a2490b77a1208c1f4638 https://git.kernel.org/stable/c/c33b1cc62ac05c1dbb1cdafe2eb66da01 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2021-47065 – rtw88: Fix array overrun in rtw_get_tx_power_params()
https://notcve.org/view.php?id=CVE-2021-47065
In the Linux kernel, the following vulnerability has been resolved: rtw88: Fix array overrun in rtw_get_tx_power_params() Using a kernel with the Undefined Behaviour Sanity Checker (UBSAN) enabled, the following array overrun is logged: ================================================================================ UBSAN: array-index-out-of-bounds in /home/finger/wireless-drivers-next/drivers/net/wireless/realtek/rtw88/phy.c:1789:34 index 5 is out of range for type 'u8 [5]' CPU: 2 PID: 84 Comm: kworker/u16:3 Tainted: G O 5.12.0-rc5-00086-gd88bba47038e-dirty #651 Hardware name: TOSHIBA TECRA A50-A/TECRA A50-A, BIOS Version 4.50 09/29/2014 Workqueue: phy0 ieee80211_scan_work [mac80211] Call Trace: dump_stack+0x64/0x7c ubsan_epilogue+0x5/0x40 __ubsan_handle_out_of_bounds.cold+0x43/0x48 rtw_get_tx_power_params+0x83a/drivers/net/wireless/realtek/rtw88/0xad0 [rtw_core] ? rtw_pci_read16+0x20/0x20 [rtw_pci] ? check_hw_ready+0x50/0x90 [rtw_core] rtw_phy_get_tx_power_index+0x4d/0xd0 [rtw_core] rtw_phy_set_tx_power_level+0xee/0x1b0 [rtw_core] rtw_set_channel+0xab/0x110 [rtw_core] rtw_ops_config+0x87/0xc0 [rtw_core] ieee80211_hw_config+0x9d/0x130 [mac80211] ieee80211_scan_state_set_channel+0x81/0x170 [mac80211] ieee80211_scan_work+0x19f/0x2a0 [mac80211] process_one_work+0x1dd/0x3a0 worker_thread+0x49/0x330 ? rescuer_thread+0x3a0/0x3a0 kthread+0x134/0x150 ? kthread_create_worker_on_cpu+0x70/0x70 ret_from_fork+0x22/0x30 ================================================================================ The statement where an array is being overrun is shown in the following snippet: if (rate <= DESC_RATE11M) tx_power = pwr_idx_2g->cck_base[group]; else ====> tx_power = pwr_idx_2g->bw40_base[group]; The associated arrays are defined in main.h as follows: struct rtw_2g_txpwr_idx { u8 cck_base[6]; u8 bw40_base[5]; struct rtw_2g_1s_pwr_idx_diff ht_1s_diff; struct rtw_2g_ns_pwr_idx_diff ht_2s_diff; struct rtw_2g_ns_pwr_idx_diff ht_3s_diff; struct rtw_2g_ns_pwr_idx_diff ht_4s_diff; }; The problem arises because the value of group is 5 for channel 14. • https://git.kernel.org/stable/c/fa6dfe6bff246ddd5be3cfe81637f137acd6c294 https://git.kernel.org/stable/c/6b5aa0cf321c25f41e09a61c83ee4dc7ab9549cb https://git.kernel.org/stable/c/95fb153c6027924cda3422120169d1890737f3a0 https://git.kernel.org/stable/c/5f3dbced8eaa5c9ed7d6943f3fea99f235a6516a https://git.kernel.org/stable/c/9cd09722e18a08b6a3d68b8bccfac39ddc22434c https://git.kernel.org/stable/c/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e •