The version of kernel installed on the remote host is prior to 5.15.148-97.158. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2024-036 advisory.

  - Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really     useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides     a certain initial portion of the to be transferred data, these parts are directly translated into what     Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of     length zero, lead to a de-reference of NULL in core networking code. (CVE-2023-46838)

  - In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open     core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev     = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release     get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev)
    ------------------------------------------------------- In the core-1 uio_unregister_device(), the     device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister,     put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2     will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double     freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
    (CVE-2023-52439)

  - In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt     spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set     slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to     check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0]. To avoid     the need to remember and double-check this in the future, just use is_spilled_reg() helper.
    (CVE-2023-52462)

  - In the Linux kernel, the following vulnerability has been resolved: efivarfs: force RO when remounting if     SetVariable is not supported If SetVariable at runtime is not supported by the firmware we never assign a     callback for that function. At the same time mount the efivarfs as RO so no one can call that. However, we     never check the permission flags when someone remounts the filesystem as RW. As a result this leads to a     crash looking like this: $ mount -o remount,rw /sys/firmware/efi/efivars $ efi-updatevar -f PK.auth PK [     303.279166] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [     303.280482] Mem abort info: [ 303.280854] ESR = 0x0000000086000004 [ 303.281338] EC = 0x21: IABT (current     EL), IL = 32 bits [ 303.282016] SET = 0, FnV = 0 [ 303.282414] EA = 0, S1PTW = 0 [ 303.282821] FSC = 0x04:
    level 0 translation fault [ 303.283771] user pgtable: 4k pages, 48-bit VAs, pgdp=000000004258c000 [     303.284913] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 [ 303.286076] Internal error:
    Oops: 0000000086000004 [#1] PREEMPT SMP [ 303.286936] Modules linked in: qrtr tpm_tis tpm_tis_core     crct10dif_ce arm_smccc_trng rng_core drm fuse ip_tables x_tables ipv6 [ 303.288586] CPU: 1 PID: 755 Comm:
    efi-updatevar Not tainted 6.3.0-rc1-00108-gc7d0c4695c68 #1 [ 303.289748] Hardware name: Unknown Unknown     Product/Unknown Product, BIOS 2023.04-00627-g88336918701d 04/01/2023 [ 303.291150] pstate: 60400005 (nZCv     daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 303.292123] pc : 0x0 [ 303.292443] lr :
    efivar_set_variable_locked+0x74/0xec [ 303.293156] sp : ffff800008673c10 [ 303.293619] x29:
    ffff800008673c10 x28: ffff0000037e8000 x27: 0000000000000000 [ 303.294592] x26: 0000000000000800 x25:
    ffff000002467400 x24: 0000000000000027 [ 303.295572] x23: ffffd49ea9832000 x22: ffff0000020c9800 x21:
    ffff000002467000 [ 303.296566] x20: 0000000000000001 x19: 00000000000007fc x18: 0000000000000000 [     303.297531] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaaac807ab54 [ 303.298495] x14:
    ed37489f673633c0 x13: 71c45c606de13f80 x12: 47464259e219acf4 [ 303.299453] x11: ffff000002af7b01 x10:
    0000000000000003 x9 : 0000000000000002 [ 303.300431] x8 : 0000000000000010 x7 : ffffd49ea8973230 x6 :
    0000000000a85201 [ 303.301412] x5 : 0000000000000000 x4 : ffff0000020c9800 x3 : 00000000000007fc [     303.302370] x2 : 0000000000000027 x1 : ffff000002467400 x0 : ffff000002467000 [ 303.303341] Call trace: [     303.303679] 0x0 [ 303.303938] efivar_entry_set_get_size+0x98/0x16c [ 303.304585]     efivarfs_file_write+0xd0/0x1a4 [ 303.305148] vfs_write+0xc4/0x2e4 [ 303.305601] ksys_write+0x70/0x104 [     303.306073] __arm64_sys_write+0x1c/0x28 [ 303.306622] invoke_syscall+0x48/0x114 [ 303.307156]     el0_svc_common.constprop.0+0x44/0xec [ 303.307803] do_el0_svc+0x38/0x98 [ 303.308268] el0_svc+0x2c/0x84 [     303.308702] el0t_64_sync_handler+0xf4/0x120 [ 303.309293] el0t_64_sync+0x190/0x194 [ 303.309794] Code:
    ???????? ???????? ???????? ???????? (????????) [ 303.310612] ---[ end trace 0000000000000000 ]--- Fix this     by adding a .reconfigure() function to the fs operations which we can use to check the requested flags and     deny anything that's not RO if the firmware doesn't implement SetVariable at runtime. (CVE-2023-52463)

  - In the Linux kernel, the following vulnerability has been resolved: mfd: syscon: Fix null pointer     dereference in of_syscon_register() kasprintf() returns a pointer to dynamically allocated memory which     can be NULL upon failure. (CVE-2023-52467)

  - An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4     (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of     a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an     attacker to achieve out-of-bounds access. (CVE-2023-6040)

  - A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may     allow an attacker using this library to cause a denial of service problem due to a missing check at a     function return. (CVE-2023-6915)

  - An out-of-bounds memory read flaw was found in receive_encrypted_standard in fs/smb/client/smb2ops.c in     the SMB Client sub-component in the Linux Kernel. This issue occurs due to integer underflow on the memcpy     length, leading to a denial of service. (CVE-2024-0565)

  - An out-of-bounds memory write flaw was found in the Linux kernel's Transport Layer Security functionality     in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user     to crash or potentially escalate their privileges on the system. (CVE-2024-0646)

  - A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to     achieve local privilege escalation. The nft_setelem_catchall_deactivate() function checks whether the     catch-all set element is active in the current generation instead of the next generation before freeing     it, but only flags it inactive in the next generation, making it possible to free the element multiple     times, leading to a double free vulnerability. We recommend upgrading past commit     b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7. (CVE-2024-1085)

  - In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix stack     corruption When tc filters are first added to a net device, the corresponding local port gets bound to an     ACL group in the device. The group contains a list of ACLs. In turn, each ACL points to a different TCAM     region where the filters are stored. During forwarding, the ACLs are sequentially evaluated until a match     is found. One reason to place filters in different regions is when they are added with decreasing     priorities and in an alternating order so that two consecutive filters can never fit in the same region     because of their key usage. In Spectrum-2 and newer ASICs the firmware started to report that the maximum     number of ACLs in a group is more than 16, but the layout of the register that configures ACL groups     (PAGT) was not updated to account for that. It is therefore possible to hit stack corruption [1] in the     rare case where more than 16 ACLs in a group are required. Fix by limiting the maximum ACL group size to     the minimum between what the firmware reports and the maximum ACLs that fit in the PAGT register. Add a     test case to make sure the machine does not crash when this condition is hit. [1] Kernel panic - not     syncing: stack-protector: Kernel stack is corrupted in: mlxsw_sp_acl_tcam_group_update+0x116/0x120 [...]     dump_stack_lvl+0x36/0x50 panic+0x305/0x330 __stack_chk_fail+0x15/0x20     mlxsw_sp_acl_tcam_group_update+0x116/0x120 mlxsw_sp_acl_tcam_group_region_attach+0x69/0x110     mlxsw_sp_acl_tcam_vchunk_get+0x492/0xa20 mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0     mlxsw_sp_acl_rule_add+0x47/0x240 mlxsw_sp_flower_replace+0x1a9/0x1d0 tc_setup_cb_add+0xdc/0x1c0     fl_hw_replace_filter+0x146/0x1f0 fl_change+0xc17/0x1360 tc_new_tfilter+0x472/0xb90     rtnetlink_rcv_msg+0x313/0x3b0 netlink_rcv_skb+0x58/0x100 netlink_unicast+0x244/0x390     netlink_sendmsg+0x1e4/0x440 ____sys_sendmsg+0x164/0x260 ___sys_sendmsg+0x9a/0xe0 __sys_sendmsg+0x7a/0xc0     do_syscall_64+0x40/0xe0 entry_SYSCALL_64_after_hwframe+0x63/0x6b (CVE-2024-26586)

  - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix re-attachment branch in     bpf_tracing_prog_attach The following case can cause a crash due to missing attach_btf: 1) load rawtp     program 2) load fentry program with rawtp as target_fd 3) create tracing link for fentry program with     target_fd = 0 4) repeat 3 In the end we have: - prog->aux->dst_trampoline == NULL - tgt_prog == NULL     (because we did not provide target_fd to link_create) - prog->aux->attach_btf == NULL (the program was     loaded with attach_prog_fd=X) - the program was loaded for tgt_prog but we have no way to find out which     one BUG: kernel NULL pointer dereference, address: 0000000000000058 Call Trace: <TASK> ? __die+0x20/0x70 ?     page_fault_oops+0x15b/0x430 ? fixup_exception+0x22/0x330 ? exc_page_fault+0x6f/0x170 ?     asm_exc_page_fault+0x22/0x30 ? bpf_tracing_prog_attach+0x279/0x560 ? btf_obj_id+0x5/0x10     bpf_tracing_prog_attach+0x439/0x560 __sys_bpf+0x1cf4/0x2de0 __x64_sys_bpf+0x1c/0x30     do_syscall_64+0x41/0xf0 entry_SYSCALL_64_after_hwframe+0x6e/0x76 Return -EINVAL in this situation.
    (CVE-2024-26591)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Amazon Linux 2 : kernel (ALASKERNEL-5.15-2024-036)

high Nessus Plugin ID 190021

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.2

Version 1.1

Version 1.0

Version 1.5 May 11, 2024, 1:11 AM CVE (set "CVE" coverage to "CVE-2023-6040,CVE-2023-6915,CVE-2023-46838,CVE-2023-52439,CVE-2023-52462,CVE-2023-52463,CVE-2023-52467,CVE-2024-0565,CVE-2024-0646,CVE-2024-1085,CVE-2024-26586,CVE-2024-26591") Detection (updated detection logic) Plugin metadata Plugin Feed: 202405110111
Version 1.4 Apr 25, 2024, 11:59 PM CVE (set "CVE" coverage to "CVE-2023-6040,CVE-2023-6915,CVE-2023-46838,CVE-2023-52439,CVE-2023-52462,CVE-2023-52463,CVE-2023-52467,CVE-2024-0565,CVE-2024-0646,CVE-2024-1085,CVE-2024-26591") Detection (updated detection logic) Plugin metadata Plugin Feed: 202404252359
Version 1.3 Mar 29, 2024, 5:39 AM CVE (set "CVE" coverage to "CVE-2023-6040,CVE-2023-6915,CVE-2023-46838,CVE-2023-52439,CVE-2023-52463,CVE-2024-0565,CVE-2024-0646,CVE-2024-1085") Detection (updated detection logic) Plugin metadata Plugin Feed: 202403290539
Version 1.2 Mar 19, 2024, 4:49 AM CVE (set "CVE" coverage to "CVE-2023-6040,CVE-2023-6915,CVE-2023-46838,CVE-2023-52463,CVE-2024-0565,CVE-2024-0646,CVE-2024-1085") Detection (updated detection logic) Plugin metadata Plugin Feed: 202403190449
Version 1.2 Mar 29, 2024, 3:24 AM CVE (set "CVE" coverage to "CVE-2023-6040,CVE-2023-6915,CVE-2023-46838,CVE-2023-52439,CVE-2023-52463,CVE-2024-0565,CVE-2024-0646,CVE-2024-1085") Detection (updated detection logic) Plugin metadata Plugin Feed: 202403290324
Version 1.1 Mar 19, 2024, 2:44 AM CVE (set "CVE" coverage to "CVE-2023-6040,CVE-2023-6915,CVE-2023-46838,CVE-2023-52463,CVE-2024-0565,CVE-2024-0646,CVE-2024-1085") Detection (updated detection logic) Plugin metadata Plugin Feed: 202403190244
Version 1.0 Feb 6, 2024, 12:33 PM New Plugin Feed: 202402061233