CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-46770 – ice: Add netif_device_attach/detach into PF reset flow
https://notcve.org/view.php?id=CVE-2024-46770
In the Linux kernel, the following vulnerability has been resolved: ice: Add netif_device_attach/detach into PF reset flow Ethtool callbacks can be executed while reset is in progress and try to access deleted resources, e.g. getting coalesce settings can result in a NULL pointer dereference seen below. Reproduction steps: Once the driver is fully initialized, trigger reset: # echo 1 > /sys/class/net/<interface>/device/reset when reset is in progress try to get coalesce settings using ethtool: # ethtool -c <interface> BUG: kernel NULL pointer dereference, address: 0000000000000020 PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 11 PID: 19713 Comm: ethtool Tainted: G S 6.10.0-rc7+ #7 RIP: 0010:ice_get_q_coalesce+0x2e/0xa0 [ice] RSP: 0018:ffffbab1e9bcf6a8 EFLAGS: 00010206 RAX: 000000000000000c RBX: ffff94512305b028 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff9451c3f2e588 RDI: ffff9451c3f2e588 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffff9451c3f2e580 R11: 000000000000001f R12: ffff945121fa9000 R13: ffffbab1e9bcf760 R14: 0000000000000013 R15: ffffffff9e65dd40 FS: 00007faee5fbe740(0000) GS:ffff94546fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000020 CR3: 0000000106c2e005 CR4: 00000000001706f0 Call Trace: <TASK> ice_get_coalesce+0x17/0x30 [ice] coalesce_prepare_data+0x61/0x80 ethnl_default_doit+0xde/0x340 genl_family_rcv_msg_doit+0xf2/0x150 genl_rcv_msg+0x1b3/0x2c0 netlink_rcv_skb+0x5b/0x110 genl_rcv+0x28/0x40 netlink_unicast+0x19c/0x290 netlink_sendmsg+0x222/0x490 __sys_sendto+0x1df/0x1f0 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x82/0x160 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7faee60d8e27 Calling netif_device_detach() before reset makes the net core not call the driver when ethtool command is issued, the attempt to execute an ethtool command during reset will result in the following message: netlink error: No such device instead of NULL pointer dereference. Once reset is done and ice_rebuild() is executing, the netif_device_attach() is called to allow for ethtool operations to occur again in a safe manner. • https://git.kernel.org/stable/c/fcea6f3da546b93050f3534aadea7bd96c1d7349 https://git.kernel.org/stable/c/9e3ffb839249eca113062587659224f856fe14e5 https://git.kernel.org/stable/c/efe8effe138044a4747d1112ebb8c454d1663723 https://git.kernel.org/stable/c/36486c9e8e01b84faaee47203eac0b7e9cc7fa4a https://git.kernel.org/stable/c/d11a67634227f9f9da51938af085fb41a733848f •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-46763 – fou: Fix null-ptr-deref in GRO.
https://notcve.org/view.php?id=CVE-2024-46763
In the Linux kernel, the following vulnerability has been resolved: fou: Fix null-ptr-deref in GRO. We observed a null-ptr-deref in fou_gro_receive() while shutting down a host. [0] The NULL pointer is sk->sk_user_data, and the offset 8 is of protocol in struct fou. When fou_release() is called due to netns dismantle or explicit tunnel teardown, udp_tunnel_sock_release() sets NULL to sk->sk_user_data. Then, the tunnel socket is destroyed after a single RCU grace period. So, in-flight udp4_gro_receive() could find the socket and execute the FOU GRO handler, where sk->sk_user_data could be NULL. Let's use rcu_dereference_sk_user_data() in fou_from_sock() and add NULL checks in FOU GRO handlers. [0]: BUG: kernel NULL pointer dereference, address: 0000000000000008 PF: supervisor read access in kernel mode PF: error_code(0x0000) - not-present page PGD 80000001032f4067 P4D 80000001032f4067 PUD 103240067 PMD 0 SMP PTI CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.216-204.855.amzn2.x86_64 #1 Hardware name: Amazon EC2 c5.large/, BIOS 1.0 10/16/2017 RIP: 0010:fou_gro_receive (net/ipv4/fou.c:233) [fou] Code: 41 5f c3 cc cc cc cc e8 e7 2e 69 f4 0f 1f 80 00 00 00 00 0f 1f 44 00 00 49 89 f8 41 54 48 89 f7 48 89 d6 49 8b 80 88 02 00 00 <0f> b6 48 08 0f b7 42 4a 66 25 fd fd 80 cc 02 66 89 42 4a 0f b6 42 RSP: 0018:ffffa330c0003d08 EFLAGS: 00010297 RAX: 0000000000000000 RBX: ffff93d9e3a6b900 RCX: 0000000000000010 RDX: ffff93d9e3a6b900 RSI: ffff93d9e3a6b900 RDI: ffff93dac2e24d08 RBP: ffff93d9e3a6b900 R08: ffff93dacbce6400 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffffb5f369b0 R12: ffff93dacbce6400 R13: ffff93dac2e24d08 R14: 0000000000000000 R15: ffffffffb4edd1c0 FS: 0000000000000000(0000) GS:ffff93daee800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000102140001 CR4: 00000000007706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259) ? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420) ? • https://git.kernel.org/stable/c/d92283e338f6d6503b7417536bf3478f466cbc01 https://git.kernel.org/stable/c/231c235d2f7a66f018f172e26ffd47c363f244ef https://git.kernel.org/stable/c/4494bccb52ffda22ce5a1163a776d970e6229e08 https://git.kernel.org/stable/c/d7567f098f54cb53ee3cee1c82e3d0ed9698b6b3 https://git.kernel.org/stable/c/1df42be305fe478ded1ee0c1d775f4ece713483b https://git.kernel.org/stable/c/c46cd6aaca81040deaea3500ba75126963294bd9 https://git.kernel.org/stable/c/7e4196935069947d8b70b09c1660b67b067e75cb •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-46762 – xen: privcmd: Fix possible access to a freed kirqfd instance
https://notcve.org/view.php?id=CVE-2024-46762
In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmd_irqfd_assign() and privcmd_irqfd_deassign(). If that happens, it is possible that a kirqfd created and added to the irqfds_list by privcmd_irqfd_assign() may get removed by another thread executing privcmd_irqfd_deassign(), while the former is still using it after dropping the locks. This can lead to a situation where an already freed kirqfd instance may be accessed and cause kernel oops. Use SRCU locking to prevent the same, as is done for the KVM implementation for irqfds. • https://git.kernel.org/stable/c/e997b357b13a7d95de31681fc54fcc34235fa527 https://git.kernel.org/stable/c/112fd2f02b308564724b8e81006c254d20945c4b https://git.kernel.org/stable/c/611ff1b1ae989a7bcce3e2a8e132ee30e968c557 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-46761 – pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv
https://notcve.org/view.php?id=CVE-2024-46761
In the Linux kernel, the following vulnerability has been resolved: pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel crash when we try to hot-unplug/disable the PCIe switch/bridge from the PHB. The crash occurs because although the MSI data structure has been released during disable/hot-unplug path and it has been assigned with NULL, still during unregistration the code was again trying to explicitly disable the MSI which causes the NULL pointer dereference and kernel crash. The patch fixes the check during unregistration path to prevent invoking pci_disable_msi/msix() since its data structure is already freed. • https://git.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048 https://git.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55 https://git.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59 https://git.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4 https://git.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4d https://git.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21e https://git.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689 https://git.kernel.org/stable/c/335e35b748527f0c06ded9eebb65387f6 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-46760 – wifi: rtw88: usb: schedule rx work after everything is set up
https://notcve.org/view.php?id=CVE-2024-46760
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: usb: schedule rx work after everything is set up Right now it's possible to hit NULL pointer dereference in rtw_rx_fill_rx_status on hw object and/or its fields because initialization routine can start getting USB replies before rtw_dev is fully setup. The stack trace looks like this: rtw_rx_fill_rx_status rtw8821c_query_rx_desc rtw_usb_rx_handler ... queue_work rtw_usb_read_port_complete ... usb_submit_urb rtw_usb_rx_resubmit rtw_usb_init_rx rtw_usb_probe So while we do the async stuff rtw_usb_probe continues and calls rtw_register_hw, which does all kinds of initialization (e.g. via ieee80211_register_hw) that rtw_rx_fill_rx_status relies on. Fix this by moving the first usb_submit_urb after everything is set up. For me, this bug manifested as: [ 8.893177] rtw_8821cu 1-1:1.2: band wrong, packet dropped [ 8.910904] rtw_8821cu 1-1:1.2: hw->conf.chandef.chan NULL in rtw_rx_fill_rx_status because I'm using Larry's backport of rtw88 driver with the NULL checks in rtw_rx_fill_rx_status. • https://git.kernel.org/stable/c/c83d464b82a8ad62ec9077637f75d73fe955635a https://git.kernel.org/stable/c/25eaef533bf3ccc6fee5067aac16f41f280e343e https://git.kernel.org/stable/c/adc539784c98a7cc602cbf557debfc2e7b9be8b3 •