In the Linux kernel, the following vulnerability has been resolved: io_uring: lock overflowing for IOPOLL syzbot reports an issue with overflow filling for IOPOLL: WARNING: CPU: 0 PID: 28 at io_uring/io_uring.c:734 io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734 CPU: 0 PID: 28 Comm: kworker/u4:1 Not tainted 6.2.0-rc3-syzkaller-16369-g358a161a6a9e #0 Workqueue: events_unbound io_ring_exit_work Call trace: io_cqring_event_overflow+0x1c0/0x230 io_uring/io_uring.c:734 io_req_cqe_overflow+0x5c/0x70 io_uring/io_uring.c:773 io_fill_cqe_req io_uring/io_uring.h:168 [inline] io_do_iopoll+0x474/0x62c io_uring/rw.c:1065 io_iopoll_try_reap_events+0x6c/0x108 io_uring/io_uring.c:1513 io_uring_try_cancel_requests+0x13c/0x258 io_uring/io_uring.c:3056 io_ring_exit_work+0xec/0x390 io_uring/io_uring.c:2869 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 There is no real problem for normal IOPOLL as flush is also called with uring_lock taken, but it's getting more complicated for IOPOLL|SQPOLL, for which __io_cqring_overflow_flush() happens from the CQ waiting path.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    RDMA/ib_srp: Fix a deadlock(CVE-2022-48930)

    netfilter: fix use-after-free in __nf_register_net_hook()(CVE-2022-48912)

    protect the fetch of -fd[fd] in do_dup2() from mispredictions(CVE-2024-42265)

    io_uring: add a schedule point in io_add_buffers()(CVE-2022-48937)

    ext4: check dot and dotdot of dx_root before making dir indexed(CVE-2024-42305)

    netfilter: nf_queue: fix possible use-after-free(CVE-2022-48911)

    cgroup/cpuset: Prevent UAF in proc_cpuset_show()(CVE-2024-43853)

    net: ipv6: ensure we call ipv6_mc_down() at most once(CVE-2022-48910)

    netfilter: nf_tables: fix memory leak during stateful obj update(CVE-2022-48933)

    netfilter: nf_tables: unregister flowtable hooks on netns exit(CVE-2022-48935)

    thermal: int340x: fix memory leak in int3400_notify()(CVE-2022-48924)

    scsi: qla2xxx: During vport delete send async logout explicitly(CVE-2024-42289)

    udf: Avoid using corrupted block bitmap buffer(CVE-2024-42306)

    lib: objagg: Fix general protection fault(CVE-2024-43846)

    net/mlx5: Always drain health in shutdown callback(CVE-2024-43866)

    exec: Fix ToCToU between perm check and set-uid/gid usage(CVE-2024-43882)

    net: usb: qmi_wwan: fix memory leak for not ip packets(CVE-2024-43861)

    io_uring: lock overflowing for IOPOLL(CVE-2023-52903)

    drm/virtio: Fix GEM handle creation UAF(CVE-2022-48899)

    xhci: Fix null pointer dereference when host dies(CVE-2023-52898)

    nvme: fix a possible use-after-free in controller reset during load(CVE-2022-48790)

    drm/ nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_hd_modes(CVE-2024-41089)

    ipvs: properly dereference pe in ip_vs_add_service(CVE-2024-42322)

    bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG(CVE-2024-43840)

    net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE(CVE-2024-42321)

    RDMA/iwcm: Fix a use-after-free related to destroying CM IDs(CVE-2024-42285)

    tipc: Return non-zero value from tipc_udp_addr2str() on error(CVE-2024-42284)

    ext4: fix infinite loop when replaying fast_commit(CVE-2024-43828)

    ext4: make sure the first directory block is not a hole(CVE-2024-42304)

    PCI/DPC: Fix use-after-free on concurrent DPC and hot-removal(CVE-2024-42302)

    net: nexthop: Initialize all fields in dumped nexthops(CVE-2024-42283)

    leds: trigger: Unregister sysfs attributes before calling deactivate()(CVE-2024-43830)

    IB/core: Implement a limit on UMAD receive List(CVE-2024-42145)

    NFSD: Fix ia_size underflow(CVE-2022-48828)

    netfilter: nf_tables: prefer nft_chain_validate(CVE-2024-41042)

    HID: core: remove unnecessary WARN_ON() in implement()(CVE-2024-39509)

    USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor(CVE-2024-41035)

    tty: add the option to have a tty reject a new ldisc(CVE-2024-40966)

    libceph: fix race between delayed_work() and ceph_monc_stop()(CVE-2024-42232)

    ata: libata-core: Fix null pointer dereference on error(CVE-2024-41098)

    USB: serial: mos7840: fix crash on resume(CVE-2024-42244)

    ata: libata-core: Fix double free on error(CVE-2024-41087)

    scsi: mpt3sas: Avoid test/set_bit() operating in non-allocated memory(CVE-2024-40901)

Tenable has extracted the preceding description block directly from the EulerOS kernel 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
211811	EulerOS 2.0 SP12 : kernel (EulerOS-SA-2024-2923)	Nessus	Huawei Local Security Checks	high
211805	EulerOS 2.0 SP12 : kernel (EulerOS-SA-2024-2929)	Nessus	Huawei Local Security Checks	high

Detections

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CVE-2023-52903

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Tenable Plugins

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