SUSE-SU-2026:20644-1

Vulnerability from csaf_suse - Published: 2026-03-04 09:41 - Updated: 2026-03-04 09:41
Summary
Security update for the Linux Kernel (Live Patch 0 for SUSE Linux Enterprise 16)

Notes

Title of the patch
Security update for the Linux Kernel (Live Patch 0 for SUSE Linux Enterprise 16)
Description of the patch
This update for the SUSE Linux Enterprise kernel 6.12.0-160000.5.1 fixes various security issues The following security issues were fixed: - CVE-2025-38352: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() (bsc#1249205). - CVE-2025-39698: io_uring/futex: ensure io_futex_wait() cleans up properly on failure (bsc#1250190). - CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480). - CVE-2025-40129: sunrpc: fix null pointer dereference on zero-length checksum (bsc#1253473). - CVE-2025-40130: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling (bsc#1253415). - CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439).
Patchnames
SUSE-SL-Micro-6.2-350
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
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        "text": "\nThis update for the SUSE Linux Enterprise kernel 6.12.0-160000.5.1 fixes various security issues\n\nThe following security issues were fixed:\n\n- CVE-2025-38352: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() (bsc#1249205).\n- CVE-2025-39698: io_uring/futex: ensure io_futex_wait() cleans up properly on failure (bsc#1250190).\n- CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480).\n- CVE-2025-40129: sunrpc: fix null pointer dereference on zero-length checksum (bsc#1253473).\n- CVE-2025-40130: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling (bsc#1253415).\n- CVE-2025-40186: tcp: Don\u0027t call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439).\n",
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        "summary": "SUSE Bug 1249205",
        "url": "https://bugzilla.suse.com/1249205"
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        "summary": "SUSE Bug 1249480",
        "url": "https://bugzilla.suse.com/1249480"
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          "text": "https://www.suse.com/security/cve/CVE-2025-38352"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()\n\nIf an exiting non-autoreaping task has already passed exit_notify() and\ncalls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent\nor debugger right after unlock_task_sighand().\n\nIf a concurrent posix_cpu_timer_del() runs at that moment, it won\u0027t be\nable to detect timer-\u003eit.cpu.firing != 0: cpu_timer_task_rcu() and/or\nlock_task_sighand() will fail.\n\nAdd the tsk-\u003eexit_state check into run_posix_cpu_timers() to fix this.\n\nThis fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because\nexit_task_work() is called before exit_notify(). But the check still\nmakes sense, task_work_add(\u0026tsk-\u003eposix_cputimers_work.work) will fail\nanyway in this case.",
          "title": "CVE description"
        }
      ],
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          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
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      "references": [
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          "summary": "CVE-2025-38352",
          "url": "https://www.suse.com/security/cve/CVE-2025-38352"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1246911 for CVE-2025-38352",
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          "url": "https://bugzilla.suse.com/1249205"
        }
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          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
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            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      "ids": [
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          "text": "https://www.suse.com/security/cve/CVE-2025-39698"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/futex: ensure io_futex_wait() cleans up properly on failure\n\nThe io_futex_data is allocated upfront and assigned to the io_kiocb\nasync_data field, but the request isn\u0027t marked with REQ_F_ASYNC_DATA\nat that point. Those two should always go together, as the flag tells\nio_uring whether the field is valid or not.\n\nAdditionally, on failure cleanup, the futex handler frees the data but\ndoes not clear -\u003easync_data. Clear the data and the flag in the error\npath as well.\n\nThanks to Trend Micro Zero Day Initiative and particularly ReDress for\nreporting this.",
          "title": "CVE description"
        }
      ],
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        },
        {
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          "summary": "SUSE Bug 1249322 for CVE-2025-39698",
          "url": "https://bugzilla.suse.com/1249322"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1250190 for CVE-2025-39698",
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        }
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            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
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      "scores": [
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          "cvss_v3": {
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            "version": "3.1"
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          "text": "https://www.suse.com/security/cve/CVE-2025-39742"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()\n\nThe function divides number of online CPUs by num_core_siblings, and\nlater checks the divider by zero. This implies a possibility to get\nand divide-by-zero runtime error. Fix it by moving the check prior to\ndivision. This also helps to save one indentation level.",
          "title": "CVE description"
        }
      ],
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          "summary": "CVE-2025-39742",
          "url": "https://www.suse.com/security/cve/CVE-2025-39742"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1247374 for CVE-2025-39742",
          "url": "https://bugzilla.suse.com/1247374"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1249479 for CVE-2025-39742",
          "url": "https://bugzilla.suse.com/1249479"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1249480 for CVE-2025-39742",
          "url": "https://bugzilla.suse.com/1249480"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253291 for CVE-2025-39742",
          "url": "https://bugzilla.suse.com/1253291"
        }
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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          "date": "2026-03-04T09:41:19Z",
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      "title": "CVE-2025-39742"
    },
    {
      "cve": "CVE-2025-40129",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-40129"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: fix null pointer dereference on zero-length checksum\n\nIn xdr_stream_decode_opaque_auth(), zero-length checksum.len causes\nchecksum.data to be set to NULL. This triggers a NPD when accessing\nchecksum.data in gss_krb5_verify_mic_v2(). This patch ensures that\nthe value of checksum.len is not less than XDR_UNIT.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-40129",
          "url": "https://www.suse.com/security/cve/CVE-2025-40129"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253472 for CVE-2025-40129",
          "url": "https://bugzilla.suse.com/1253472"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253473 for CVE-2025-40129",
          "url": "https://bugzilla.suse.com/1253473"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-03-04T09:41:19Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-40129"
    },
    {
      "cve": "CVE-2025-40130",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-40130"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix data race in CPU latency PM QoS request handling\n\nThe cpu_latency_qos_add/remove/update_request interfaces lack internal\nsynchronization by design, requiring the caller to ensure thread safety.\nThe current implementation relies on the \u0027pm_qos_enabled\u0027 flag, which is\ninsufficient to prevent concurrent access and cannot serve as a proper\nsynchronization mechanism. This has led to data races and list\ncorruption issues.\n\nA typical race condition call trace is:\n\n[Thread A]\nufshcd_pm_qos_exit()\n  --\u003e cpu_latency_qos_remove_request()\n    --\u003e cpu_latency_qos_apply();\n      --\u003e pm_qos_update_target()\n        --\u003e plist_del              \u003c--(1) delete plist node\n    --\u003e memset(req, 0, sizeof(*req));\n  --\u003e hba-\u003epm_qos_enabled = false;\n\n[Thread B]\nufshcd_devfreq_target\n  --\u003e ufshcd_devfreq_scale\n    --\u003e ufshcd_scale_clks\n      --\u003e ufshcd_pm_qos_update     \u003c--(2) pm_qos_enabled is true\n        --\u003e cpu_latency_qos_update_request\n          --\u003e pm_qos_update_target\n            --\u003e plist_del          \u003c--(3) plist node use-after-free\n\nIntroduces a dedicated mutex to serialize PM QoS operations, preventing\ndata races and ensuring safe access to PM QoS resources, including sysfs\ninterface reads.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-40130",
          "url": "https://www.suse.com/security/cve/CVE-2025-40130"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253414 for CVE-2025-40130",
          "url": "https://bugzilla.suse.com/1253414"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253415 for CVE-2025-40130",
          "url": "https://bugzilla.suse.com/1253415"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-03-04T09:41:19Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-40130"
    },
    {
      "cve": "CVE-2025-40186",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-40186"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: Don\u0027t call reqsk_fastopen_remove() in tcp_conn_request().\n\nsyzbot reported the splat below in tcp_conn_request(). [0]\n\nIf a listener is close()d while a TFO socket is being processed in\ntcp_conn_request(), inet_csk_reqsk_queue_add() does not set reqsk-\u003esk\nand calls inet_child_forget(), which calls tcp_disconnect() for the\nTFO socket.\n\nAfter the cited commit, tcp_disconnect() calls reqsk_fastopen_remove(),\nwhere reqsk_put() is called due to !reqsk-\u003esk.\n\nThen, reqsk_fastopen_remove() in tcp_conn_request() decrements the\nlast req-\u003ersk_refcnt and frees reqsk, and __reqsk_free() at the\ndrop_and_free label causes the refcount underflow for the listener\nand double-free of the reqsk.\n\nLet\u0027s remove reqsk_fastopen_remove() in tcp_conn_request().\n\nNote that other callers make sure tp-\u003efastopen_rsk is not NULL.\n\n[0]:\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 12 PID: 5563 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28)\nModules linked in:\nCPU: 12 UID: 0 PID: 5563 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025\nRIP: 0010:refcount_warn_saturate (lib/refcount.c:28)\nCode: ab e8 8e b4 98 ff 0f 0b c3 cc cc cc cc cc 80 3d a4 e4 d6 01 00 75 9c c6 05 9b e4 d6 01 01 48 c7 c7 e8 df fb ab e8 6a b4 98 ff \u003c0f\u003e 0b e9 03 5b 76 00 cc 80 3d 7d e4 d6 01 00 0f 85 74 ff ff ff c6\nRSP: 0018:ffffa79fc0304a98 EFLAGS: 00010246\nRAX: d83af4db1c6b3900 RBX: ffff9f65c7a69020 RCX: d83af4db1c6b3900\nRDX: 0000000000000000 RSI: 00000000ffff7fff RDI: ffffffffac78a280\nRBP: 000000009d781b60 R08: 0000000000007fff R09: ffffffffac6ca280\nR10: 0000000000017ffd R11: 0000000000000004 R12: ffff9f65c7b4f100\nR13: ffff9f65c7d23c00 R14: ffff9f65c7d26000 R15: ffff9f65c7a64ef8\nFS:  00007f9f962176c0(0000) GS:ffff9f65fcf00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000200000000180 CR3: 000000000dbbe006 CR4: 0000000000372ef0\nCall Trace:\n \u003cIRQ\u003e\n tcp_conn_request (./include/linux/refcount.h:400 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/sock.h:1965 ./include/net/request_sock.h:131 net/ipv4/tcp_input.c:7301)\n tcp_rcv_state_process (net/ipv4/tcp_input.c:6708)\n tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1670)\n tcp_v6_rcv (net/ipv6/tcp_ipv6.c:1906)\n ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:438)\n ip6_input (net/ipv6/ip6_input.c:500)\n ipv6_rcv (net/ipv6/ip6_input.c:311)\n __netif_receive_skb (net/core/dev.c:6104)\n process_backlog (net/core/dev.c:6456)\n __napi_poll (net/core/dev.c:7506)\n net_rx_action (net/core/dev.c:7569 net/core/dev.c:7696)\n handle_softirqs (kernel/softirq.c:579)\n do_softirq (kernel/softirq.c:480)\n \u003c/IRQ\u003e",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
          "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-40186",
          "url": "https://www.suse.com/security/cve/CVE-2025-40186"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253438 for CVE-2025-40186",
          "url": "https://bugzilla.suse.com/1253438"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253439 for CVE-2025-40186",
          "url": "https://bugzilla.suse.com/1253439"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.ppc64le",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.s390x",
            "SUSE Linux Micro 6.2:kernel-livepatch-6_12_0-160000_5-default-7-160000.4.3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-03-04T09:41:19Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-40186"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.