CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2022-48731 – mm/kmemleak: avoid scanning potential huge holes
https://notcve.org/view.php?id=CVE-2022-48731
In the Linux kernel, the following vulnerability has been resolved: mm/kmemleak: avoid scanning potential huge holes When using devm_request_free_mem_region() and devm_memremap_pages() to add ZONE_DEVICE memory, if requested free mem region's end pfn were huge(e.g., 0x400000000), the node_end_pfn() will be also huge (see move_pfn_range_to_zone()). Thus it creates a huge hole between node_start_pfn() and node_end_pfn(). We found on some AMD APUs, amdkfd requested such a free mem region and created a huge hole. In such a case, following code snippet was just doing busy test_bit() looping on the huge hole. for (pfn = start_pfn; pfn < end_pfn; pfn++) { struct page *page = pfn_to_online_page(pfn); if (!page) continue; ... } So we got a soft lockup: watchdog: BUG: soft lockup - CPU#6 stuck for 26s! [bash:1221] CPU: 6 PID: 1221 Comm: bash Not tainted 5.15.0-custom #1 RIP: 0010:pfn_to_online_page+0x5/0xd0 Call Trace: ? • https://git.kernel.org/stable/c/d3533ee20e9a0e2e8f60384da7450d43d1c63d1a https://git.kernel.org/stable/c/352715593e81b917ce1b321e794549815b850134 https://git.kernel.org/stable/c/a5389c80992f0001ee505838fe6a8b20897ce96e https://git.kernel.org/stable/c/cebb0aceb21ad91429617a40e3a17444fabf1529 https://git.kernel.org/stable/c/c10a0f877fe007021d70f9cada240f42adc2b5db •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48730 – dma-buf: heaps: Fix potential spectre v1 gadget
https://notcve.org/view.php?id=CVE-2022-48730
In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix potential spectre v1 gadget It appears like nr could be a Spectre v1 gadget as it's supplied by a user and used as an array index. Prevent the contents of kernel memory from being leaked to userspace via speculative execution by using array_index_nospec. [sumits: added fixes and cc: stable tags] • https://git.kernel.org/stable/c/c02a81fba74fe3488ad6b08bfb5a1329005418f8 https://git.kernel.org/stable/c/5d40f1bdad3dd1a177f21a90ad4353c1ed40ba3a https://git.kernel.org/stable/c/24f8e12d965b24f8aea762589e0e9fe2025c005e https://git.kernel.org/stable/c/cc8f7940d9c2d45f67b3d1a2f2b7a829ca561bed https://git.kernel.org/stable/c/92c4cfaee6872038563c5b6f2e8e613f9d84d47d •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2022-48729 – IB/hfi1: Fix panic with larger ipoib send_queue_size
https://notcve.org/view.php?id=CVE-2022-48729
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix panic with larger ipoib send_queue_size When the ipoib send_queue_size is increased from the default the following panic happens: RIP: 0010:hfi1_ipoib_drain_tx_ring+0x45/0xf0 [hfi1] Code: 31 e4 eb 0f 8b 85 c8 02 00 00 41 83 c4 01 44 39 e0 76 60 8b 8d cc 02 00 00 44 89 e3 be 01 00 00 00 d3 e3 48 03 9d c0 02 00 00 <c7> 83 18 01 00 00 00 00 00 00 48 8b bb 30 01 00 00 e8 25 af a7 e0 RSP: 0018:ffffc9000798f4a0 EFLAGS: 00010286 RAX: 0000000000008000 RBX: ffffc9000aa0f000 RCX: 000000000000000f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88810ff08000 R08: ffff88889476d900 R09: 0000000000000101 R10: 0000000000000000 R11: ffffc90006590ff8 R12: 0000000000000200 R13: ffffc9000798fba8 R14: 0000000000000000 R15: 0000000000000001 FS: 00007fd0f79cc3c0(0000) GS:ffff88885fb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9000aa0f118 CR3: 0000000889c84001 CR4: 00000000001706e0 Call Trace: <TASK> hfi1_ipoib_napi_tx_disable+0x45/0x60 [hfi1] hfi1_ipoib_dev_stop+0x18/0x80 [hfi1] ipoib_ib_dev_stop+0x1d/0x40 [ib_ipoib] ipoib_stop+0x48/0xc0 [ib_ipoib] __dev_close_many+0x9e/0x110 __dev_change_flags+0xd9/0x210 dev_change_flags+0x21/0x60 do_setlink+0x31c/0x10f0 ? __nla_validate_parse+0x12d/0x1a0 ? __nla_parse+0x21/0x30 ? inet6_validate_link_af+0x5e/0xf0 ? cpumask_next+0x1f/0x20 ? • https://git.kernel.org/stable/c/d47dfc2b00e69001c8eeae71f7e25066ccc36144 https://git.kernel.org/stable/c/1530d84fba1e459ba55f46aa42649b88773210e7 https://git.kernel.org/stable/c/8c83d39cc730378bbac64d67a551897b203a606e •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48728 – IB/hfi1: Fix AIP early init panic
https://notcve.org/view.php?id=CVE-2022-48728
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix AIP early init panic An early failure in hfi1_ipoib_setup_rn() can lead to the following panic: BUG: unable to handle kernel NULL pointer dereference at 00000000000001b0 PGD 0 P4D 0 Oops: 0002 [#1] SMP NOPTI Workqueue: events work_for_cpu_fn RIP: 0010:try_to_grab_pending+0x2b/0x140 Code: 1f 44 00 00 41 55 41 54 55 48 89 d5 53 48 89 fb 9c 58 0f 1f 44 00 00 48 89 c2 fa 66 0f 1f 44 00 00 48 89 55 00 40 84 f6 75 77 <f0> 48 0f ba 2b 00 72 09 31 c0 5b 5d 41 5c 41 5d c3 48 89 df e8 6c RSP: 0018:ffffb6b3cf7cfa48 EFLAGS: 00010046 RAX: 0000000000000246 RBX: 00000000000001b0 RCX: 0000000000000000 RDX: 0000000000000246 RSI: 0000000000000000 RDI: 00000000000001b0 RBP: ffffb6b3cf7cfa70 R08: 0000000000000f09 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffb6b3cf7cfa90 R14: ffffffff9b2fbfc0 R15: ffff8a4fdf244690 FS: 0000000000000000(0000) GS:ffff8a527f400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000001b0 CR3: 00000017e2410003 CR4: 00000000007706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: __cancel_work_timer+0x42/0x190 ? dev_printk_emit+0x4e/0x70 iowait_cancel_work+0x15/0x30 [hfi1] hfi1_ipoib_txreq_deinit+0x5a/0x220 [hfi1] ? dev_err+0x6c/0x90 hfi1_ipoib_netdev_dtor+0x15/0x30 [hfi1] hfi1_ipoib_setup_rn+0x10e/0x150 [hfi1] rdma_init_netdev+0x5a/0x80 [ib_core] ? hfi1_ipoib_free_rdma_netdev+0x20/0x20 [hfi1] ipoib_intf_init+0x6c/0x350 [ib_ipoib] ipoib_intf_alloc+0x5c/0xc0 [ib_ipoib] ipoib_add_one+0xbe/0x300 [ib_ipoib] add_client_context+0x12c/0x1a0 [ib_core] enable_device_and_get+0xdc/0x1d0 [ib_core] ib_register_device+0x572/0x6b0 [ib_core] rvt_register_device+0x11b/0x220 [rdmavt] hfi1_register_ib_device+0x6b4/0x770 [hfi1] do_init_one.isra.20+0x3e3/0x680 [hfi1] local_pci_probe+0x41/0x90 work_for_cpu_fn+0x16/0x20 process_one_work+0x1a7/0x360 ? create_worker+0x1a0/0x1a0 worker_thread+0x1cf/0x390 ? • https://git.kernel.org/stable/c/d99dc602e2a55a99940ba9506a7126dfa54d54ea https://git.kernel.org/stable/c/4a9bd1e6780fc59f81466ec3489d5ad535a37190 https://git.kernel.org/stable/c/a3dd4d2682f2a796121609e5f3bbeb1243198c53 https://git.kernel.org/stable/c/1899c3cad265c4583658aed5293d02e8af84276b https://git.kernel.org/stable/c/5f8f55b92edd621f056bdf09e572092849fabd83 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48727 – KVM: arm64: Avoid consuming a stale esr value when SError occur
https://notcve.org/view.php?id=CVE-2022-48727
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Avoid consuming a stale esr value when SError occur When any exception other than an IRQ occurs, the CPU updates the ESR_EL2 register with the exception syndrome. An SError may also become pending, and will be synchronised by KVM. KVM notes the exception type, and whether an SError was synchronised in exit_code. When an exception other than an IRQ occurs, fixup_guest_exit() updates vcpu->arch.fault.esr_el2 from the hardware register. When an SError was synchronised, the vcpu esr value is used to determine if the exception was due to an HVC. If so, ELR_EL2 is moved back one instruction. • https://git.kernel.org/stable/c/defe21f49bc98b095300752aa1e19bb608f3e97d https://git.kernel.org/stable/c/e1e852746997500f1873f60b954da5f02cc2dba3 https://git.kernel.org/stable/c/57e2986c3b25092691a6e3d6ee9168caf8978932 https://git.kernel.org/stable/c/1c71dbc8a179d99dd9bb7e7fc1888db613cf85de •