In the Linux kernel, the following vulnerability has been resolved: mm: multi-gen LRU: fix crash during cgroup migration lru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself. This isn't true for the following scenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork() task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock() And when the above happens, kernel crashes because of linked list corruption (mm_struct->lru_gen.list).

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: mm: multi-gen LRU: fix crash during     cgroup migration lru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself. This isn't true for     the following scenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork()     task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock() And when the     above happens, kernel crashes because of linked list corruption (mm_struct->lru_gen.list).
    (CVE-2023-52940)

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-2024:2394 advisory.

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

    Security Fix(es):

    * kernel: GSM multiplexing race condition leads to privilege escalation (CVE-2023-6546)

    * kernel: multiple use-after-free vulnerabilities (CVE-2024-1086, CVE-2023-3567, CVE-2023-4133,     CVE-2023-6932, CVE-2023-39198, CVE-2023-51043, CVE-2023-51779, CVE-2023-51780, CVE-2024-1085,     CVE-2024-26582)

    * kernel: Bluetooth BR/EDR PIN Pairing procedure is vulnerable to an impersonation attack (CVE-2020-26555)

    * kernel: memcg does not limit the number of POSIX file locks allowing memory exhaustion (CVE-2022-0480)

    * kernel: multiple NULL pointer dereference vulnerabilities (CVE-2022-38096, CVE-2023-6622, CVE-2023-6915,     CVE-2023-42754, CVE-2023-46862, CVE-2023-52574, CVE-2024-0841, CVE-2023-52448)

    * kernel: integer overflow in l2cap_config_req() in net/bluetooth/l2cap_core.c (CVE-2022-45934)

    * kernel: netfilter: nf_tables: out-of-bounds access in nf_tables_newtable() (CVE-2023-6040)

    * kernel: GC's deletion of an SKB races with unix_stream_read_generic()  leading to UAF (CVE-2023-6531)

    * kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size     (CVE-2023-6931)

    * kernel: Bluetooth Forward and Future Secrecy Attacks and Defenses (CVE-2023-24023)

    * kernel: irdma: Improper access control (CVE-2023-25775)

    * Kernel: double free in hci_conn_cleanup of the bluetooth subsystem (CVE-2023-28464)

    * kernel: Bluetooth: HCI: global out-of-bounds access in net/bluetooth/hci_sync.c (CVE-2023-28866)

    * kernel: race condition between HCIUARTSETPROTO and HCIUARTGETPROTO in hci_uart_tty_ioctl     (CVE-2023-31083)

    * kernel: multiple out-of-bounds read vulnerabilities (CVE-2023-37453, CVE-2023-39189, CVE-2023-39193,     CVE-2023-6121, CVE-2023-39194)

    * kernel: netfilter: race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP (CVE-2023-42756)

    * kernel: lib/kobject.c vulnerable to fill_kobj_path out-of-bounds write (CVE-2023-45863)

    * kernel: smb: client: fix potential OOBs in smb2_parse_contexts() (CVE-2023-52434)

    * kernel: mm/sparsemem: fix race in accessing memory_section->usage (CVE-2023-52489)

    * kernel: net: fix possible store tearing in neigh_periodic_work() (CVE-2023-52522)

    * kernel: multiple memory leak vulnerabilities (CVE-2023-52529, CVE-2023-52581)

    * kernel: net: bridge: data races indata-races in br_handle_frame_finish() (CVE-2023-52578)

    * kernel: net/core: kernel crash in ETH_P_1588 flow dissector (CVE-2023-52580)

    * kernel: net/sched: act_ct: fix skb leak and crash on ooo frags (CVE-2023-52610)

    * kernel: CIFS Filesystem Decryption Improper Input Validation Remote Code Execution Vulnerability in     function receive_encrypted_standard of client (CVE-2024-0565)

    * kernel: tls: race between async notify and socket close (CVE-2024-26583)

    * kernel: tls: handle backlogging of crypto requests (CVE-2024-26584)

    * kernel: tls: race between tx work scheduling and socket close (CVE-2024-26585)

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

    * kernel: i2c: i801: Fix block process call transactions (CVE-2024-26593)

    * kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (CVE-2024-26602)

    * kernel: netfilter: nf_tables: reject QUEUE/DROP verdict parameters (CVE-2024-26609)

    * kernel: local dos vulnerability in scatterwalk_copychunks (CVE-2023-6176)

    * kernel: perf/x86/lbr: Filter vsyscall addresses (CVE-2023-52476)

    * kernel: netfilter: nf_tables: disallow timeout for anonymous sets (CVE-2023-52620)

    * kernel: ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim() (CVE-2024-26633)

    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 9.4 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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-132 advisory.

    It has been discovered that on some AMD CPUs, the RAS (Return Address Stack, also called RAP - Return     Address Predictor - in some AMD documentation, and RSB - Return Stack Buffer - in Intel terminology) is     dynamically partitioned between non-idle threads.  This allows an attacker to control speculative     execution on the adjacent thread. (CVE-2022-27672)

    In the Linux kernel, the following vulnerability has been resolved:

    ovl: Use buf flexible array for memcpy() destination (CVE-2022-49743)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/uffd: fix pte marker when fork() without fork event (CVE-2022-49744)

    The upstream bug report describes this issue as follows:

    A flaw found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol. The     rds_rm_zerocopy_callback() uses list_entry() on the head of a list causing a type confusion. Local user     can trigger this with rds_message_put(). Type confusion leads to `struct rds_msg_zcopy_info *info`     actually points to something else that is potentially controlled by local user. It is known how to trigger     this, which causes an OOB access, and a lock corruption. (CVE-2023-1078)

    A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing a font->width and     font->height greater than 32 to the fbcon_set_font, since there are no checks in place, a shift-out-of-     bounds occurs, leading to undefined behavior and possible denial of service. (CVE-2023-3161)

    brcm_nvram_parse in drivers/nvmem/brcm_nvram.c lacks check of the return value of kzalloc() and will cause     the NULL Pointer Dereference (CVE-2023-3359)

    A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux     Kernel. In this flaw an attacker with local user access may lead to a system crash or a leak of internal     kernel information. (CVE-2023-3567)

    In the Linux kernel, the following vulnerability has been resolved:

    Fix page corruption caused by racy check in __free_pages (CVE-2023-52739)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: Fix use-after-free in rdata->read_into_pages() (CVE-2023-52741)

    In the Linux kernel, the following vulnerability has been resolved:

    xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr() (CVE-2023-52746)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Skip invalid kfunc call in backtrack_insn (CVE-2023-52928)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915: Fix potential bit_17 double-free (CVE-2023-52930)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915: Avoid potential vm use-after-free (CVE-2023-52931)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/swapfile: add cond_resched() in get_swap_pages() (CVE-2023-52932)

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: fix handling and sanity checking of xattr_ids count (CVE-2023-52933)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/MADV_COLLAPSE: catch !none !huge !bad pmd lookups (CVE-2023-52934)

    In the Linux kernel, the following vulnerability has been resolved:

    mm/khugepaged: fix ->anon_vma race (CVE-2023-52935)

    In the Linux kernel, the following vulnerability has been resolved:

    kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup() (CVE-2023-52936)

    In the Linux kernel, the following vulnerability has been resolved:

    HV: hv_balloon: fix memory leak with using debugfs_lookup() (CVE-2023-52937)

    In the Linux kernel, the following vulnerability has been resolved:

    mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath() (CVE-2023-52939)

    In the Linux kernel, the following vulnerability has been resolved:

    mm: multi-gen LRU: fix crash during cgroup migration (CVE-2023-52940)

    In the Linux kernel, the following vulnerability has been resolved:

    cgroup/cpuset: Fix wrong check in update_parent_subparts_cpumask() (CVE-2023-52942)

    In the Linux kernel, the following vulnerability has been resolved:

    vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF (CVE-2023-52973)

    In the Linux kernel, the following vulnerability has been resolved:

    efi: fix potential NULL deref in efi_mem_reserve_persistent (CVE-2023-52976)

    In the Linux kernel, the following vulnerability has been resolved:

    net: openvswitch: fix flow memory leak in ovs_flow_cmd_new (CVE-2023-52977)

    In the Linux kernel, the following vulnerability has been resolved:

    squashfs: harden sanity check in squashfs_read_xattr_id_table (CVE-2023-52979)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/i915: Fix request ref counting during error capture & debugfs dump (CVE-2023-52981)

    In the Linux kernel, the following vulnerability has been resolved:

    fscache: Use wait_on_bit() to wait for the freeing of relinquished volume (CVE-2023-52982)

    In the Linux kernel, the following vulnerability has been resolved:

    block, bfq: fix uaf for bfqq in bic_set_bfqq() (CVE-2023-52983)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener (CVE-2023-52986)

Tenable has extracted the preceding description block directly from the tested product 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
244751	Linux Distros Unpatched Vulnerability : CVE-2023-52940	Nessus	Misc.	medium
194794	RHEL 9 : kernel (RHSA-2024:2394)	Nessus	Red Hat Local Security Checks	critical
173140	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-132)	Nessus	Amazon Linux Local Security Checks	high

Detections

Analytics

CVE-2023-52940

medium

Tenable Plugins

medium

critical

high