In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: possible module reference underflow in error path dst->ops is set on when nft_expr_clone() fails, but module refcount has not been bumped yet, therefore nft_expr_destroy() leads to module reference underflow.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: possible module     reference underflow in error path dst->ops is set on when nft_expr_clone() fails, but module refcount has     not been bumped yet, therefore nft_expr_destroy() leads to module reference underflow. (CVE-2022-50048)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:3421 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: Marvin vulnerability side-channel leakage in the RSA decryption operation (CVE-2023-6240)

    * kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function (CVE-2024-1086)

    * kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (CVE-2024-26586)

    * CVE-2024-25743 hw: amd: Instruction raise #VC exception at exit (AMD-     SN-3008,CVE-2024-25742,CVE-2024-25743)

    * kernel: netfilter: nftables: exthdr: fix 4-byte stack OOB write (CVE-2023-52628)

    * kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction (CVE-2023-4244)

    * kernel: inactive elements in nft_pipapo_walk (CVE-2023-6817)

    Bug Fix(es):

    * kdump 2nd kernel panic in call trace tick_handle_periodic (JIRA:RHEL-32889)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:2951 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    The following packages have been upgraded to a later upstream version: kernel (4.18.0). (BZ#2122230,     BZ#2122267)

    Security Fix(es):

    * use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)

    * net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)

    * hw: cpu: AMD CPUs may transiently execute beyond unconditional direct branch (CVE-2021-26341)

    * malicious data for FBIOPUT_VSCREENINFO ioctl may cause OOB write memory (CVE-2021-33655)

    * when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds     (CVE-2021-33656)

    * possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)

    * use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)

    * KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)

    * KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (CVE-2022-2196)

    * netfilter: nf_conntrack_irc message handling issue (CVE-2022-2663)

    * race condition in xfrm_probe_algs can lead to OOB read/write (CVE-2022-3028)

    * media: em28xx: initialize refcount before kref_get (CVE-2022-3239)

    * race condition in hugetlb_no_page() in mm/hugetlb.c (CVE-2022-3522)

    * memory leak in ipv6_renew_options() (CVE-2022-3524)

    * data races around icsk->icsk_af_ops in do_ipv6_setsockopt (CVE-2022-3566)

    * data races around sk->sk_prot (CVE-2022-3567)

    * memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c (CVE-2022-3619)

    * denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry (CVE-2022-3623)

    * use-after-free after failed devlink reload in devlink_param_get (CVE-2022-3625)

    * USB-accessible buffer overflow in brcmfmac (CVE-2022-3628)

    * Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)

    * l2tp: missing lock when clearing sk_user_data can lead to NULL pointer dereference (CVE-2022-4129)

    * igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets (CVE-2022-20141)

    * Executable Space Protection Bypass (CVE-2022-25265)

    * Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option (CVE-2022-30594)

    * unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (CVE-2022-39188)

    * TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning     (CVE-2022-39189)

    * Report vmalloc UAF in dvb-core/dmxdev (CVE-2022-41218)

    * u8 overflow problem in cfg80211_update_notlisted_nontrans() (CVE-2022-41674)

    * use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)

    * use-after-free in bss_ref_get in net/wireless/scan.c (CVE-2022-42720)

    * BSS list corruption in cfg80211_add_nontrans_list in net/wireless/scan.c (CVE-2022-42721)

    * Denial of service in beacon protection for P2P-device (CVE-2022-42722)

    * memory corruption in usbmon driver (CVE-2022-43750)

    * NULL pointer dereference in traffic control subsystem (CVE-2022-47929)

    * NULL pointer dereference in rawv6_push_pending_frames (CVE-2023-0394)

    * use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)

    * Soft lockup occurred during __page_mapcount (CVE-2023-1582)

    * slab-out-of-bounds read vulnerabilities in cbq_classify (CVE-2023-23454)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:8267 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)

    * use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)

    * smb2_ioctl_query_info NULL pointer dereference (CVE-2022-0168)

    * NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)

    * swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)

    * uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)

    * race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)

    * use-after-free and memory errors in ext4 when mounting and operating on a corrupted image     (CVE-2022-1184)

    * concurrency use-after-free between drm_setmaster_ioctl and drm_mode_getresources (CVE-2022-1280)

    * kernel info leak issue in pfkey_register (CVE-2022-1353)

    * use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)

    * NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)

    * fanotify misuses fd_install() which could lead to use-after-free (CVE-2022-1998)

    * nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)

    * integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

    * slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

    * incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)

    * incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)

    * incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)

    * possible to use the debugger to write zero into a location of choice (CVE-2022-21499)

    * AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816,     CVE-2022-29900)

    * AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)

    * Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

    * double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)

    * use after free in SUNRPC subsystem (CVE-2022-28893)

    * use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)

    * Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

    * DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)

    * nf_tables disallow binding to already bound chain (CVE-2022-39190)

    * nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.1 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

ID	Name	Product	Family	Severity
260498	Linux Distros Unpatched Vulnerability : CVE-2022-50048	Nessus	Misc.	medium
197975	RHEL 9 : kernel (RHSA-2024:3421)	Nessus	Red Hat Local Security Checks	high
175900	RHEL 8 : kernel (RHSA-2023:2951)	Nessus	Red Hat Local Security Checks	high
167620	RHEL 9 : kernel (RHSA-2022:8267)	Nessus	Red Hat Local Security Checks	high
166118	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2022-008 (ALASKERNEL-5.15-2022-008)	Nessus	Amazon Linux Local Security Checks	high

Detections

Analytics

CVE-2022-50048

medium

Tenable Plugins

medium

high

high

high

high