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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request()\n\nThis patch fixes a shift-out-of-bounds in brcmfmac that occurs in\nBIT(chiprev) when a \u0027chiprev\u0027 provided by the device is too large.\nIt should also not be equal to or greater than BITS_PER_TYPE(u32)\nas we do bitwise AND with a u32 variable and BIT(chiprev). The patch\nadds a check that makes the function return NULL if that is the case.\nNote that the NULL case is later handled by the bus-specific caller,\nbrcmf_usb_probe_cb() or brcmf_usb_reset_resume(), for example.\n\nFound by a modified version of syzkaller.\n\nUBSAN: shift-out-of-bounds in drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c\nshift exponent 151055786 is too large for 64-bit type \u0027long unsigned int\u0027\nCPU: 0 PID: 1885 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #132\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014\nWorkqueue: usb_hub_wq hub_event\nCall Trace:\n dump_stack_lvl+0x57/0x7d\n ubsan_epilogue+0x5/0x40\n __ubsan_handle_shift_out_of_bounds.cold+0x53/0xdb\n ? lock_chain_count+0x20/0x20\n brcmf_fw_alloc_request.cold+0x19/0x3ea\n ? brcmf_fw_get_firmwares+0x250/0x250\n ? brcmf_usb_ioctl_resp_wait+0x1a7/0x1f0\n brcmf_usb_get_fwname+0x114/0x1a0\n ? brcmf_usb_reset_resume+0x120/0x120\n ? number+0x6c4/0x9a0\n brcmf_c_process_clm_blob+0x168/0x590\n ? put_dec+0x90/0x90\n ? enable_ptr_key_workfn+0x20/0x20\n ? brcmf_common_pd_remove+0x50/0x50\n ? rcu_read_lock_sched_held+0xa1/0xd0\n brcmf_c_preinit_dcmds+0x673/0xc40\n ? brcmf_c_set_joinpref_default+0x100/0x100\n ? rcu_read_lock_sched_held+0xa1/0xd0\n ? rcu_read_lock_bh_held+0xb0/0xb0\n ? lock_acquire+0x19d/0x4e0\n ? find_held_lock+0x2d/0x110\n ? brcmf_usb_deq+0x1cc/0x260\n ? mark_held_locks+0x9f/0xe0\n ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n ? _raw_spin_unlock_irqrestore+0x47/0x50\n ? trace_hardirqs_on+0x1c/0x120\n ? brcmf_usb_deq+0x1a7/0x260\n ? brcmf_usb_rx_fill_all+0x5a/0xf0\n brcmf_attach+0x246/0xd40\n ? wiphy_new_nm+0x1476/0x1d50\n ? kmemdup+0x30/0x40\n brcmf_usb_probe+0x12de/0x1690\n ? brcmf_usbdev_qinit.constprop.0+0x470/0x470\n usb_probe_interface+0x25f/0x710\n really_probe+0x1be/0xa90\n __driver_probe_device+0x2ab/0x460\n ? usb_match_id.part.0+0x88/0xc0\n driver_probe_device+0x49/0x120\n __device_attach_driver+0x18a/0x250\n ? driver_allows_async_probing+0x120/0x120\n bus_for_each_drv+0x123/0x1a0\n ? bus_rescan_devices+0x20/0x20\n ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n ? trace_hardirqs_on+0x1c/0x120\n __device_attach+0x207/0x330\n ? device_bind_driver+0xb0/0xb0\n ? kobject_uevent_env+0x230/0x12c0\n bus_probe_device+0x1a2/0x260\n device_add+0xa61/0x1ce0\n ? __mutex_unlock_slowpath+0xe7/0x660\n ? __fw_devlink_link_to_suppliers+0x550/0x550\n usb_set_configuration+0x984/0x1770\n ? kernfs_create_link+0x175/0x230\n usb_generic_driver_probe+0x69/0x90\n usb_probe_device+0x9c/0x220\n really_probe+0x1be/0xa90\n __driver_probe_device+0x2ab/0x460\n driver_probe_device+0x49/0x120\n __device_attach_driver+0x18a/0x250\n ? driver_allows_async_probing+0x120/0x120\n bus_for_each_drv+0x123/0x1a0\n ? bus_rescan_devices+0x20/0x20\n ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n ? trace_hardirqs_on+0x1c/0x120\n __device_attach+0x207/0x330\n ? device_bind_driver+0xb0/0xb0\n ? kobject_uevent_env+0x230/0x12c0\n bus_probe_device+0x1a2/0x260\n device_add+0xa61/0x1ce0\n ? __fw_devlink_link_to_suppliers+0x550/0x550\n usb_new_device.cold+0x463/0xf66\n ? hub_disconnect+0x400/0x400\n ? _raw_spin_unlock_irq+0x24/0x30\n hub_event+0x10d5/0x3330\n ? hub_port_debounce+0x280/0x280\n ? __lock_acquire+0x1671/0x5790\n ? wq_calc_node_cpumask+0x170/0x2a0\n ? lock_release+0x640/0x640\n ? rcu_read_lock_sched_held+0xa1/0xd0\n ? rcu_read_lock_bh_held+0xb0/0xb0\n ? lockdep_hardirqs_on_prepare+0x273/0x3e0\n process_one_work+0x873/0x13e0\n ? lock_release+0x640/0x640\n ? pwq_dec_nr_in_flight+0x320/0x320\n ? rwlock_bug.part.0+0x90/0x90\n worker_thread+0x8b/0xd10\n ? __kthread_parkme+0xd9/0x1d0\n ? pr\n---truncated---"
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          "url": "https://git.kernel.org/stable/c/81d17f6f3331f03c8eafdacea68ab773426c1e3c"
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      "title": "wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request()",
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "0",
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              "version": "4.9.331",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.4.220",
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              "status": "unaffected",
              "version": "5.10.150",
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            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
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              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: Update ipcomp_scratches with NULL when freed\n\nCurrently if ipcomp_alloc_scratches() fails to allocate memory\nipcomp_scratches holds obsolete address. So when we try to free the\npercpu scratches using ipcomp_free_scratches() it tries to vfree non\nexistent vm area. Described below:\n\nstatic void * __percpu *ipcomp_alloc_scratches(void)\n{\n        ...\n        scratches = alloc_percpu(void *);\n        if (!scratches)\n                return NULL;\nipcomp_scratches does not know about this allocation failure.\nTherefore holding the old obsolete address.\n        ...\n}\n\nSo when we free,\n\nstatic void ipcomp_free_scratches(void)\n{\n        ...\n        scratches = ipcomp_scratches;\nAssigning obsolete address from ipcomp_scratches\n\n        if (!scratches)\n                return;\n\n        for_each_possible_cpu(i)\n               vfree(*per_cpu_ptr(scratches, i));\nTrying to free non existent page, causing warning: trying to vfree\nexistent vm area.\n        ...\n}\n\nFix this breakage by updating ipcomp_scrtches with NULL when scratches\nis freed"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is triggered only when creating/destroying IPComp XFRM states via local NETLINK_XFRM (xfrm_user_rcv_msg \u2192 xfrm_add_sa \u2192 ipcomp_init_state \u2192 ipcomp_alloc/free_scratches), not by processing remote packets on the IPComp input/output path.\nAC:L - The attacker fully controls the IPComp SA create/destroy cycle and can induce the required alloc_percpu failure via memory pressure before the next create, matching prior CNA scoring that treats attacker-induced allocation failure as Low complexity.\nPR:L - xfrm_user_rcv_msg requires CAP_NET_ADMIN via netlink_net_capable(sock_net()-\u003euser_ns), which an unprivileged user obtains with unshare -Urn; per guidance this is Low, not High.\nUI:N - The attacker opens a NETLINK_XFRM socket and sends XFRM_MSG_NEWSA/DELSA messages themselves; no separate victim action is required.\nS:U - The double-free/UAF corrupts host-kernel vmalloc/percpu state within the same OS security authority and does not cross a VM, IOMMU, or other boundary.\nC:H - After free without NULLing, the error path reads the freed percpu array to obtain scratch pointers and re-vfrees them; reclaim/spray of that memory yields a UAF read and arbitrary-vfree primitive, scored High per UAF guidance.\nI:H - Double-free of the percpu scratch pointer table and its vmalloc regions is classic heap corruption that enables arbitrary free and control-flow hijacking once the stale objects are reclaimed.\nA:H - The path produces the syzbot WARN in vfree/__vunmap and can oops/panic under panic_on_warn or corrupted free_percpu state; any UAF/double-free is High availability impact."
            }
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        }
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        {
          "url": "https://git.kernel.org/stable/c/a39f456d62810c0efb43cead22f98d95b53e4b1a"
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        {
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      "title": "xfrm: Update ipcomp_scratches with NULL when freed",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50569",
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    "dateUpdated": "2026-08-05T08:59:09.466Z",
    "state": "PUBLISHED"
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          "shortName": "CISA-ADP"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dcb: choose correct policy to parse DCB_ATTR_BCN\n\nThe dcbnl_bcn_setcfg uses erroneous policy to parse tb[DCB_ATTR_BCN],\nwhich is introduced in commit 859ee3c43812 (\"DCB: Add support for DCB\nBCN\"). Please see the comment in below code\n\nstatic int dcbnl_bcn_setcfg(...)\n{\n  ...\n  ret = nla_parse_nested_deprecated(..., dcbnl_pfc_up_nest, .. )\n  // !!! dcbnl_pfc_up_nest for attributes\n  //  DCB_PFC_UP_ATTR_0 to DCB_PFC_UP_ATTR_ALL in enum dcbnl_pfc_up_attrs\n  ...\n  for (i = DCB_BCN_ATTR_RP_0; i \u003c= DCB_BCN_ATTR_RP_7; i++) {\n  // !!! DCB_BCN_ATTR_RP_0 to DCB_BCN_ATTR_RP_7 in enum dcbnl_bcn_attrs\n    ...\n    value_byte = nla_get_u8(data[i]);\n    ...\n  }\n  ...\n  for (i = DCB_BCN_ATTR_BCNA_0; i \u003c= DCB_BCN_ATTR_RI; i++) {\n  // !!! DCB_BCN_ATTR_BCNA_0 to DCB_BCN_ATTR_RI in enum dcbnl_bcn_attrs\n  ...\n    value_int = nla_get_u32(data[i]);\n  ...\n  }\n  ...\n}\n\nThat is, the nla_parse_nested_deprecated uses dcbnl_pfc_up_nest\nattributes to parse nlattr defined in dcbnl_pfc_up_attrs. But the\nfollowing access code fetch each nlattr as dcbnl_bcn_attrs attributes.\nBy looking up the associated nla_policy for dcbnl_bcn_attrs. We can find\nthe beginning part of these two policies are \"same\".\n\nstatic const struct nla_policy dcbnl_pfc_up_nest[...] = {\n        [DCB_PFC_UP_ATTR_0]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_1]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_2]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_3]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_4]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_5]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_6]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_7]   = {.type = NLA_U8},\n        [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},\n};\n\nstatic const struct nla_policy dcbnl_bcn_nest[...] = {\n        [DCB_BCN_ATTR_RP_0]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_1]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_2]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_3]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_4]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_5]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_6]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_7]         = {.type = NLA_U8},\n        [DCB_BCN_ATTR_RP_ALL]       = {.type = NLA_FLAG},\n        // from here is somewhat different\n        [DCB_BCN_ATTR_BCNA_0]       = {.type = NLA_U32},\n        ...\n        [DCB_BCN_ATTR_ALL]          = {.type = NLA_FLAG},\n};\n\nTherefore, the current code is buggy and this\nnla_parse_nested_deprecated could overflow the dcbnl_pfc_up_nest and use\nthe adjacent nla_policy to parse attributes from DCB_BCN_ATTR_BCNA_0.\n\nHence use the correct policy dcbnl_bcn_nest to parse the nested\ntb[DCB_ATTR_BCN] TLV."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "references": [
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          "url": "https://git.kernel.org/stable/c/5b3dbedb8d4a0f9f7ce904d76b885438af2a21f9"
        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/31d49ba033095f6e8158c60f69714a500922e0c3"
        }
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      "title": "net: dcb: choose correct policy to parse DCB_ATTR_BCN",
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    "datePublished": "2025-09-18T13:33:17.384Z",
    "dateReserved": "2025-09-17T14:54:09.734Z",
    "dateUpdated": "2026-05-11T19:43:36.996Z",
    "state": "PUBLISHED"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ses: Handle enclosure with just a primary component gracefully\n\nThis reverts commit 3fe97ff3d949 (\"scsi: ses: Don\u0027t attach if enclosure\nhas no components\") and introduces proper handling of case where there are\nno detected secondary components, but primary component (enumerated in\nnum_enclosures) does exist. That fix was originally proposed by Ding Hui\n\u003cdinghui@sangfor.com.cn\u003e.\n\nCompletely ignoring devices that have one primary enclosure and no\nsecondary one results in ses_intf_add() bailing completely\n\n\tscsi 2:0:0:254: enclosure has no enumerated components\n        scsi 2:0:0:254: Failed to bind enclosure -12ven in valid configurations such\n\neven on valid configurations with 1 primary and 0 secondary enclosures as\nbelow:\n\n\t# sg_ses /dev/sg0\n\t  3PARdata  SES               3321\n\tSupported diagnostic pages:\n\t  Supported Diagnostic Pages [sdp] [0x0]\n\t  Configuration (SES) [cf] [0x1]\n\t  Short Enclosure Status (SES) [ses] [0x8]\n\t# sg_ses -p cf /dev/sg0\n\t  3PARdata  SES               3321\n\tConfiguration diagnostic page:\n\t  number of secondary subenclosures: 0\n\t  generation code: 0x0\n\t  enclosure descriptor list\n\t    Subenclosure identifier: 0 [primary]\n\t      relative ES process id: 0, number of ES processes: 1\n\t      number of type descriptor headers: 1\n\t      enclosure logical identifier (hex): 20000002ac02068d\n\t      enclosure vendor: 3PARdata  product: VV                rev: 3321\n\t  type descriptor header and text list\n\t    Element type: Unspecified, subenclosure id: 0\n\t      number of possible elements: 1\n\nThe changelog for the original fix follows\n\n=====\nWe can get a crash when disconnecting the iSCSI session,\nthe call trace like this:\n\n  [ffff00002a00fb70] kfree at ffff00000830e224\n  [ffff00002a00fba0] ses_intf_remove at ffff000001f200e4\n  [ffff00002a00fbd0] device_del at ffff0000086b6a98\n  [ffff00002a00fc50] device_unregister at ffff0000086b6d58\n  [ffff00002a00fc70] __scsi_remove_device at ffff00000870608c\n  [ffff00002a00fca0] scsi_remove_device at ffff000008706134\n  [ffff00002a00fcc0] __scsi_remove_target at ffff0000087062e4\n  [ffff00002a00fd10] scsi_remove_target at ffff0000087064c0\n  [ffff00002a00fd70] __iscsi_unbind_session at ffff000001c872c4\n  [ffff00002a00fdb0] process_one_work at ffff00000810f35c\n  [ffff00002a00fe00] worker_thread at ffff00000810f648\n  [ffff00002a00fe70] kthread at ffff000008116e98\n\nIn ses_intf_add, components count could be 0, and kcalloc 0 size scomp,\nbut not saved in edev-\u003ecomponent[i].scratch\n\nIn this situation, edev-\u003ecomponent[0].scratch is an invalid pointer,\nwhen kfree it in ses_intf_remove_enclosure, a crash like above would happen\nThe call trace also could be other random cases when kfree cannot catch\nthe invalid pointer\n\nWe should not use edev-\u003ecomponent[] array when the components count is 0\nWe also need check index when use edev-\u003ecomponent[] array in\nses_enclosure_data_process\n====="
        }
      ],
      "metrics": [
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            {
              "lang": "en",
              "value": "AV:A - A malicious SES target on the storage fabric (SAS expander/enclosure, FC, or iSCSI/SRP) supplies a configuration page with zero DEVICE/ARRAY_DEVICE elements; the commit\u2019s own crash path is iSCSI session teardown into ses_intf_remove_enclosure(), matching sibling SES fabric scores (CVE-2023-53675/53803/7324).\nAC:L - The attacker fully controls the SES page-1 type list and can deterministically report no DEVICE/ARRAY_DEVICE components, then drop the session to hit the unguarded edev-\u003ecomponent[0] access; no race or uncontrolled timing is required.\nPR:N - ses_intf_add() runs automatically from the SCSI class_interface during LUN discovery for any target that sets the EncServ INQUIRY bit or is TYPE_ENCLOSURE, with no host credentials or capabilities required.\nUI:N - Enclosure bind/unbind is driven by kernel hotplug and session teardown (e.g. __iscsi_unbind_session); the attacker\u2019s fabric device presents and disconnects without any victim mount, open, or configuration step.\nS:U - The slab OOB read and resulting kfree operate on ordinary host-kernel heap within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Reading past the zero-length component[] flex array yields an 8-byte neighbour pointer that is passed to kfree(), freeing a live adjacent object and enabling a groomable use-after-free kernel-memory read primitive.\nI:H - kfree() of the OOB-derived pointer is an invalid/duplicate-free primitive: reclaiming the still-referenced slab object allows overwrite of kernel data and control-flow hijack, consistent with the same remove-path bug in CVE-2023-53521.\nA:H - The bogus free corrupts the allocator and oopses/panics (as in the documented iSCSI disconnect trace), and the attacker can re-trigger by re-presenting and dropping the malicious enclosure at will."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:14:06.042Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4e7c498c3713b09bef20c76c7319555637e8bbd5"
        },
        {
          "url": "https://git.kernel.org/stable/c/110d425cdfb15006f3c4fde5264e786a247b6b36"
        },
        {
          "url": "https://git.kernel.org/stable/c/176d7345b89ced72020a313bfa4e7f345d1c3aed"
        },
        {
          "url": "https://git.kernel.org/stable/c/05143d90ac90b7abc6692285895a1ef460e008ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/f8e702c54413eee2d8f94f61d18adadac7c87e87"
        },
        {
          "url": "https://git.kernel.org/stable/c/eabc4872f172ecb8dd8536bc366a51868154a450"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8e22b7a1694bb8d025ea636816472739d859145"
        }
      ],
      "title": "scsi: ses: Handle enclosure with just a primary component gracefully",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53431",
    "datePublished": "2025-09-18T16:04:11.748Z",
    "dateReserved": "2025-09-17T14:54:09.745Z",
    "dateUpdated": "2026-08-05T09:14:06.042Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}