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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T19:22:28.838638Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: stop processing a packet once its association is deleted\n\nsctp_endpoint_bh_rcv() looks the association up only when chunk-\u003easoc is\nNULL, and caches the result in chunk-\u003easoc and chunk-\u003etransport without\ntaking a reference.\n\nA packet that matches no association is handed to the endpoint, so a peer\ncan bundle COOKIE ECHO, SHUTDOWN and SHUTDOWN ACK in one packet. The\nCOOKIE ECHO creates the association, the SHUTDOWN chunk caches it, and\nwith the outqueue empty the SHUTDOWN ACK reaches sctp_sf_do_9_2_final(),\nso the association and its transports are freed.\n\nThe endpoint loop has no counterpart to the asoc-\u003ebase.dead check in\nsctp_assoc_bh_rcv(). The next chunk writes to last_time_heard in the freed\ntransport and is then passed to sctp_do_sm() with the freed association.\nThe transport is freed through RCU, so this needs the packet to come off\nthe socket backlog, where the loop runs in task context.\n\nThe endpoint loop cannot do the same check: it holds no reference on the\nassociation, so reading asoc-\u003ebase.dead would itself be a use-after-free.\nMark the packet for discard in the command interpreter, just before it\ndeletes the association. That is also before sctp_inq_free() releases the\nchunk on the association receive path.\n\nsctp_sf_do_5_2_4_dupcook() issues SCTP_CMD_DELETE_TCB for the temporary\nassociation, while the one the packet belongs to stays alive. A restarting\npeer can bundle DATA behind its COOKIE ECHO, so compare against\nchunk-\u003easoc and leave that case alone."
        }
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            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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              "value": "AV:N - The UAF is reached from sctp_rcv() when a remote peer sends a bundled SCTP packet (COOKIE-ECHO, SHUTDOWN, SHUTDOWN-ACK, then another chunk) to a listening internet-facing SCTP endpoint; no local syscall or link-local medium is required.\nAC:L - The attacker fully controls the four-way handshake and the bundled chunk order that creates, caches, then deletes the association in one packet; forcing that packet onto the socket backlog is done with concurrent associations or recv/accept load the attacker generates, with no victim-only race.\nPR:N - COOKIE-ECHO is the unauthenticated SCTP handshake completion using only the INIT-ACK cookie as anti-spoofing; a network peer needs no Linux account, capability, or namespace privilege on the victim host.\nUI:N - The kernel automatically processes inbound SCTP chunks in sctp_endpoint_bh_rcv()/sctp_do_sm(); no victim mount, file open, or other interactive action is required.\nS:U - Impact is kernel heap use-after-free of sctp_association/sctp_transport on the host; it does not cross a VM, container, or IOMMU boundary.\nC:H - After DELETE_TCB the next bundled chunk reads freed asoc-\u003estate and other association fields and is passed into sctp_do_sm(); UAF of these slab objects enables heap grooming for arbitrary kernel disclosure.\nI:H - The same loop writes last_time_heard on the RCU-freed transport and mutates freed asoc fields (stats, last_data_from) before sctp_do_sm() runs with the dangling pointer, yielding a standard UAF write/control-flow primitive.\nA:H - Dereferencing the freed association and transport in the endpoint receive loop can oops or panic the kernel, and a remote peer can repeat the bundled packet against any listening SCTP service."
            }
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        "dateUpdated": "2026-10-19T08:47:28.375Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/ed85fe91a61bc0e0da6b585c07102b20f4cc65a0"
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          "url": "https://git.kernel.org/stable/c/5c0b2dbbdafc9eeeb11fffe1e46551fc3b55d8ee"
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          "url": "https://git.kernel.org/stable/c/ee3f04cf566f6041aa9a0360494fd8db5ade383a"
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        },
        {
          "url": "https://git.kernel.org/stable/c/47e15a8d12e366d0d261bcbc394394f44418938d"
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      ],
      "title": "sctp: stop processing a packet once its association is deleted",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89479",
    "datePublished": "2026-09-11T19:43:35.263Z",
    "dateReserved": "2026-09-11T19:38:34.711Z",
    "dateUpdated": "2026-10-19T08:47:28.375Z",
    "state": "PUBLISHED"
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}

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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2()\n\ncoalesce_t2() computes data pointers directly from server-supplied\nDataOffset fields with no validation against buffer bounds:\n\n  data_area_of_tgt = (char *)\u0026pSMBt-\u003ehdr.Protocol +\n                     get_unaligned_le16(\u0026pSMBt-\u003et2_rsp.DataOffset);\n  data_area_of_src = (char *)\u0026pSMBs-\u003ehdr.Protocol +\n                     get_unaligned_le16(\u0026pSMBs-\u003et2_rsp.DataOffset);\n  data_area_of_tgt += total_in_tgt;\n  ...\n  memcpy(data_area_of_tgt, data_area_of_src, total_in_src);\n\nA small DataOffset can push a pointer below the actual byte area,\noverwriting header fields; a large one can push it past the buffer\nend, causing out-of-bounds heap reads (source) or writes (target).\nThe BCC overflow guard does not prevent this: BCC reflects how much\ndata is present, while DataOffset controls where in the buffer it\nstarts.\n\nThe \"validate target area\" comment present since the function was\nfirst written in 2005 was a placeholder that was never implemented.\n\nAdd lower- and upper-bound checks for both data pointers before the\nmemcpy, and before any target header fields are modified."
        }
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      "metrics": [
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          "cvssV3_1": {
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            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - coalesce_t2() runs in cifs_demultiplex_thread on SMB1 TRANS2 responses received over TCP/445; a malicious or compromised SMB1 server (or MITM on an unsigned session) delivers the crafted DataOffset/DataCount fields entirely over the network.\nAC:L - The server fully controls DataOffset, DataCount, and TotalDataCount in both primary and secondary TRANS2 PDUs and can force a large first fragment so mid-\u003eresp_buf is set; the unbounded memcpy is deterministic with no race or condition outside the attacker\u2019s control.\nPR:N - The attacker is the remote SMB peer and needs no account or privileges on the victim; coalesce_t2() runs in the demux thread before validate_t2() or any local capability check, and session credentials belong to the client mount, not the attacking server.\nUI:N - Once an SMB1 CIFS mount exists (fstab, autofs, embedded/industrial NAS; CONFIG_CIFS_ALLOW_INSECURE_LEGACY defaults on), reconnect and ordinary lookup/readdir/getattr plus cifs_qfs_tcon QUERY_FS_INFO issue TRANS2 automatically, so the server can trigger coalescing with no further user action.\nS:U - The out-of-bounds heap read/write corrupts the client kernel\u2019s own cifs_request slab within the same host security authority; this is not a VM escape, IOMMU bypass, or sandbox boundary crossing.\nC:H - An unvalidated source DataOffset lets memcpy read far past the secondary response (DataOffset is a 16-bit value up to 65535 versus a ~16KB cifs_request object), disclosing adjacent kernel heap; the same memory-corruption primitive can be leveraged for further disclosure.\nI:H - An unvalidated target DataOffset lets memcpy write attacker-controlled bytes past the primary buffer (or backward into the SMB header); the BCC-size guard does not constrain where the copy starts, yielding an out-of-bounds write exploitable for control-flow hijacking.\nA:H - Reading or writing tens of kilobytes past the cifs_request allocation can fault on unmapped pages and oops or panic the demux thread, and a malicious server can retrigger it on every multi-part TRANS2."
            }
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:32:22.744Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: midi: Serialize input teardown with event_input\n\nsnd_midi_input_event() must not be running while a rawmidi substream is\nclosing, since this can lead to the trigger state becoming out-of-step\nthrough this sequence in snd_rawmidi_input_trigger():\n\n\tsnd_rawmidi_input_trigger(up=0)\n\t\t\t\t\tsnd_midi_input_event()\n\t\t\t\t\t -\u003e snd_rawmidi_kernel_read()\n\t\t\t\t\t     -\u003e snd_rawmidi_input_trigger(up=1)\n\t  -\u003e cancel_work_sync()\n\nwhich ends with the underlying device being active unexpectedly.\n\nWhen this is called from close_substream(), further input can re-trigger\nthe input event leaving it running after rawmidi_release_priv() has set\nrfile-\u003ermidi to NULL which leads to:\n\n\tUnable to handle kernel NULL pointer dereference at virtual address 00000000000000b0\n\tCall trace:\n\t snd_midi_input_event+0x3c/0x134 [snd_seq_midi] (P)\n\t snd_rawmidi_input_event_work+0x1c/0x2c\n\t process_one_work+0x150/0x3a4\n\t worker_thread+0x190/0x318\n\nApply a similar approach to commit ef7607ab1c8ad (\"ALSA: seq: midi:\nSerialize output teardown with event_input\") which fixed the same issue\nin the output direction, but updated to use RCU following Takashi Iwai\u0027s\nproposed follow-on patch [1].\n\nWith this change in place, midisynth_unsubscribe() clears the input file\nso snd_midi_input_event() will not re-trigger the stream and will be\nquiesced by the cancel_work_sync() in snd_rawmidi_input_trigger().\n\n[1] https://lore.kernel.org/linux-sound/20260813144224.753399-1-tiwai@suse.de/"
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              "value": "AV:L - The race is reached from a local sequencer client: snd_seq_open() on /dev/snd/seq, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT (midisynth_subscribe) to open the rawmidi input, then SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT or client close (midisynth_unsubscribe -\u003e snd_rawmidi_kernel_release). Bytes that schedule snd_midi_input_event come from the bound rawmidi device, not a network or radio protocol.\nAC:L - The attacker owns teardown (last unsubscribe/close) and starts input by subscribing: midisynth_subscribe sets runtime-\u003eevent to snd_midi_input_event and snd_rawmidi_kernel_read() triggers the device. Concurrent snd_midi_input_event can re-call snd_rawmidi_input_trigger(up=1) during close_substream\u0027s trigger(up=0)/cancel_work_sync window. Repeating subscribe/unsubscribe on that live port makes the race retryable.\nPR:L - snd_seq_open() has no capable() check. check_subscription_permission() allows any sequencer client to subscribe to seq_midi ports because they advertise SNDRV_SEQ_PORT_CAP_READ|SNDRV_SEQ_PORT_CAP_SUBS_READ. Typical DAC on /dev/snd/seq is audio-group/uaccess, so an unprivileged local user suffices; init-namespace root is not required.\nUI:N - The attacker opens their own /dev/snd/seq client, creates a destination port, issues SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT to a seq_midi input port, and then unsubscribes or closes to run midisynth_unsubscribe. No other user must mount, click, or open a file.\nS:U - The UAF/NULL deref is in kernel rawmidi lifetime (close_substream/snd_rawmidi_runtime_free versus snd_rawmidi_input_event_work calling snd_midi_input_event). That is local kernel memory corruption in the same OS authority, not a VM, IOMMU, or sandbox escape.\nC:H - After cancel_work_sync, a re-triggered device can schedule runtime-\u003eevent_work; close_substream then kfree()s snd_rawmidi_runtime while the work later does container_of() and calls runtime-\u003eevent. Use-after-free of that heap object enables arbitrary reads via heap reuse of the freed runtime.\nI:H - The freed snd_rawmidi_runtime embeds event_work and the runtime-\u003eevent function pointer that snd_rawmidi_input_event_work invokes. Heap spraying that object lets an attacker hijack the callback for arbitrary kernel write or control-flow hijack, not merely a one-shot crash.\nA:H - The reported crash is a NULL deref in snd_midi_input_event from snd_rawmidi_input_event_work after rawmidi_release_priv() nulls the file and close_substream frees runtime, which oopses the kernel and can be retried with subscribe/unsubscribe cycles."
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: validate absolute native symlink targets before NT fixups\n\nWith symlinkroot unset, an absolute target is copied without conversion\nto an NT drive path. Later code still assumes an NT prefix is present\nwhen modifying the target and calculating the print name length.\n\nFor \"/ab\", this causes two failures: sym[5] and path[5] are written\npast their allocations, and plen -= 2 * poff subtracts an assumed\n8-byte prefix from a 6-byte UTF-16 target, wrapping u16 plen to 65534.\nThat underflow causes another overflow: memcpy() copies 65534 bytes\ninto a 24-byte buffer. A user with write access to a mounted share\ncan trigger these bugs with default settings.\n\nValidate the NT drive prefix, including an ASCII drive letter, before\naccessing fixed offsets or subtracting the prefix length."
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              "value": "AV:L - The malformed input is the symlink target string a local user passes to symlink(2) on a CIFS mount (cifs_symlink -\u003e create_reparse_symlink -\u003e create_native_symlink); the SMB server supplies none of the bad data, and the overflow happens before any request is sent.\nAC:L - With default options (reparse_type defaults to NFS so cifs_symlink_type() returns NATIVE, symlinkroot unset) a target like \"/ab\" deterministically triggers the plen underflow; detect_directory_symlink_target() returns 0 for absolute targets, so nothing on the path depends on state outside the attacker\u0027s control.\nPR:L - The attacker needs only an ordinary local account with write access to a directory on an already-mounted CIFS share whose server advertises FILE_SUPPORTS_REPARSE_POINTS; cifs is not mountable from user namespaces, so no further privilege is gained there.\nUI:N - The attacker triggers the bug entirely through their own symlink(2) call; no victim action is needed beyond the share already being mounted.\nS:U - Heap corruption in the CIFS client stays within the local kernel\u0027s security authority; this is ordinary local privilege escalation or crash with no VM or IOMMU boundary crossed.\nC:H - memcpy(buf-\u003ePathBuffer, path+poff, plen) reads 65534 bytes past the small UTF-16 path allocation, and the matching heap overflow can be groomed into read primitives over adjacent slab objects.\nI:H - Out-of-bounds heap writes: sym[5]/path[5] past their allocations, and a 65534-byte memcpy into a 24-byte kzalloc buffer after u16 plen and len wrap, corrupting adjacent slab objects in a way usable for control-flow hijack.\nA:H - The 64 KiB overflow of the kmalloc buffer corrupts large amounts of slab memory and reliably oopses or panics the kernel, and any user with write access to the share can repeat it."
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          "url": "https://git.kernel.org/stable/c/23c240d9509e15f72e4112fc95f0160ab32ec430"
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      "title": "smb: client: validate absolute native symlink targets before NT fixups",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98318",
    "datePublished": "2026-10-06T08:46:13.140Z",
    "dateReserved": "2026-09-25T10:25:14.340Z",
    "dateUpdated": "2026-10-19T09:17:28.900Z",
    "state": "PUBLISHED"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Validate the task named by a management response\n\n__iscsi_complete_pdu() fetches the task for five response types from one\nplace and checks only that the index resolved:\n\n      case ISCSI_OP_LOGOUT_RSP:\n      case ISCSI_OP_LOGIN_RSP:\n      case ISCSI_OP_TEXT_RSP:\n      case ISCSI_OP_SCSI_TMFUNC_RSP:\n      case ISCSI_OP_NOOP_IN:\n              task = iscsi_itt_to_task(conn, hdr-\u003eitt);\n              if (!task)\n                      return ISCSI_ERR_BAD_ITT;\n\niscsi_itt_to_task() bounds the index against cmds_max and looks at\nnothing else, so a target can name any slot in the pool, including one\nthat has never been used. task-\u003econn is then NULL, and both\niscsi_nop_out_rsp() and iscsi_complete_task() dereference it. One\nunsolicited NOP-In is enough; a Text Response carrying the same ITT\ncrashes in iscsi_complete_task() instead.\n\nRequire the task to be in flight and not a SCSI command, the way\niscsi_itt_to_ctask() does for the command opcodes.\n\n[    6.298634] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN NOPTI\n[    6.298642] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]\n[    6.298652] CPU: 1 UID: 0 PID: 111 Comm: iscsistart Not tainted 7.2.0-rc5-ISCSI1-gf5098b6bae76 #1 PREEMPT(lazy)\n[    6.298654] Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[    6.298656] RIP: 0010:iscsi_nop_out_rsp.constprop.0+0x46/0x160\n[    6.298691] Code: c1 ea 03 48 83 ec 08 80 3c 02 00 0f 85 f5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 58 48 8d 7d 60 48 89 fa 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 c0 00 00 00 48 8b 45 60 48 39 c3 74 50 48 b8 00\n[    6.298698] RSP: 0018:ffff88806c907be8 EFLAGS: 00010206\n[    6.298701] RAX: dffffc0000000000 RBX: ffff888006116800 RCX: 0000000000000020\n[    6.298702] RDX: 000000000000000c RSI: ffff88800525d578 RDI: 0000000000000060\n[    6.298703] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\n[    6.298706] R10: 0000000000000020 R11: 0000000000000000 R12: 0000000000000000\n[    6.298706] R13: 000000000000002e R14: ffff8880056eb440 R15: ffff888006116800\n[    6.298707] FS:  00007fc02d1c2740(0000) GS:ffff8880b29bc000(0000) knlGS:0000000000000000\n[    6.298710] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    6.298711] CR2: 000055fe3b56ddf8 CR3: 00000000053b9004 CR4: 0000000000770ef0\n[    6.298712] PKRU: 55555554\n[    6.298713] Call Trace:\n[    6.298714]  \u003cIRQ\u003e\n[    6.298714]  __iscsi_complete_pdu+0x13a8/0x22a0\n[    6.298758]  iscsi_complete_pdu+0x54/0xa0\n[    6.298759]  iscsi_tcp_hdr_recv_done+0x870/0x2c80\n[    6.298778]  iscsi_tcp_recv_skb+0x31e/0xec0\n[    6.298800]  iscsi_sw_tcp_recv+0x12f/0x390\n[    6.298804]  __tcp_read_sock+0x1ab/0x810\n[    6.298812]  iscsi_sw_tcp_data_ready+0x18b/0x510\n[    6.298814]  tcp_rcv_established+0x1f56/0x3a00\n[    6.298842]  tcp_v4_do_rcv+0x449/0x960\n[    6.298847]  tcp_v4_rcv+0x2245/0x3bc0"
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            "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",
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - An iSCSI target supplies the forged ITT in an ISCSI_OP_NOOP_IN PDU over routable TCP; iscsi_sw_tcp_data_ready() through iscsi_tcp_hdr_dissect() and iscsi_complete_pdu() reaches the patched __iscsi_complete_pdu().\nAC:L - iscsi_pool_init() zeroes every task and iscsi_conn_setup() removes only the login task, leaving deterministic in-range slots with task-\u003econn NULL. One NOP-In with the session age, a free-slot index, reserved TTT, and no data triggers the fault without a race.\nPR:N - iscsi_sw_tcp_conn_bind() enables receive processing before iscsi_conn_start() marks the session logged in, while __iscsi_complete_pdu() has no CHAP or session-state gate. The target therefore needs no credentials or local capability.\nUI:N - On a bound or automatically restored iSCSI session, iscsi_sw_tcp_data_ready() parses the target\u0027s NOP-In immediately; no user must open data or perform another action.\nS:U - __iscsi_complete_pdu() misidentifies a task inside the host kernel\u0027s own iscsi_session pool, and the resulting fault affects that same kernel without crossing a VM, IOMMU, or other security boundary.\nC:N - iscsi_nop_out_rsp() reads conn-\u003eping_task through the NULL task-\u003econn pointer and exposes no data to the target. Selecting an active SCSI slot returns any unfilled buffer only to the local requester, not to the remote attacker.\nI:N - The NULL-slot path performs no attacker-controlled write. An active SCSI slot can be completed early, but this supplies no host-memory write or control-flow primitive beyond the target\u0027s existing authority to acknowledge its own remote block operations.\nA:H - A single forged NOP-In naming a zeroed free slot makes iscsi_nop_out_rsp() dereference task-\u003econn at conn-\u003eping_task, producing the demonstrated general-protection fault in IRQ context and potentially panicking the kernel."
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              "status": "unaffected",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Validate the ITT reflected in a Reject PDU\n\nA Reject PDU carries a copy of the header it rejects, and\niscsi_handle_reject() takes the ITT out of that copy to find the task to\nclean up:\n\n      memcpy(\u0026rejected_pdu, data, sizeof(struct iscsi_hdr));\n      ...\n      task = iscsi_itt_to_task(conn, rejected_pdu.itt);\n\nThat value is whatever the target put there. iscsi_itt_to_task() bounds\nthe index against cmds_max and checks nothing else, so any task in the\npool can be named, and iscsi_nop_out_rsp() then completes it.\n\nAn index that has never been used gives a NULL task-\u003econn: the pool is\nzeroed at session setup and conn is assigned only when a task is\nallocated. If the task was used and returned, iscsi_complete_task() hits\nits WARN_ON_ONCE(task-\u003estate == ISCSI_TASK_FREE) and the refcount\nunderflows. An in-flight SCSI command is completed as successful - a 1\nMiB read returned 1048576 with none of its buffer written and no\nwarning.\n\nValidate the reflected ITT the way iscsi_itt_to_ctask() validates a\ncommand ITT, and require the task to be in flight and not a SCSI\ncommand.\n\n[    6.248477] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN NOPTI\n[    6.249357] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]\n[    6.249951] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 7.2.0-rc5-ISCSI1-gf5098b6bae76 #1 PREEMPT(lazy)\n[    6.250718] Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[    6.251616] RIP: 0010:iscsi_nop_out_rsp.constprop.0+0x46/0x160\n[    6.252043] Code: c1 ea 03 48 83 ec 08 80 3c 02 00 0f 85 f5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 58 48 8d 7d 60 48 89 fa 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 c0 00 00 00 48 8b 45 60 48 39 c3 74 50 48 b8 00\n[    6.252813] RSP: 0018:ffff88806c907b80 EFLAGS: 00010206\n[    6.253042] RAX: dffffc0000000000 RBX: ffff88800607e000 RCX: ffffffff8d571a25\n[    6.253345] RDX: 000000000000000c RSI: ffff88806c907c38 RDI: 0000000000000060\n[    6.253642] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff235a504\n[    6.253947] R10: 0000000000000003 R11: 7463656e6e6f6320 R12: 0000000000000000\n[    6.254251] R13: 0000000000000000 R14: ffff88806c907c38 R15: 0000000000000000\n[    6.254549] FS:  0000000000000000(0000) GS:ffff8880d95bc000(0000) knlGS:0000000000000000\n[    6.254887] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    6.255140] CR2: 00007fc393e8ffc0 CR3: 0000000005252006 CR4: 0000000000770ef0\n[    6.255439] PKRU: 55555554\n[    6.255564] Call Trace:\n[    6.255674]  \u003cIRQ\u003e\n[    6.255768]  __iscsi_complete_pdu+0x18bf/0x22a0\n[    6.256733]  iscsi_complete_pdu+0x54/0xa0\n[    6.256905]  iscsi_tcp_data_recv_done+0xf4/0x250\n[    6.257103]  iscsi_tcp_recv_skb+0x31e/0xec0\n[    6.257680]  iscsi_sw_tcp_recv+0x12f/0x390\n[    6.258061]  __tcp_read_sock+0x1ab/0x810\n[    6.258853]  iscsi_sw_tcp_data_ready+0x18b/0x510\n[    6.259808]  tcp_data_queue+0x1f13/0x4cd0\n[    6.260567]  tcp_rcv_established+0x8a5/0x3a00\n[    6.261931]  tcp_v4_do_rcv+0x449/0x960\n[    6.262269]  tcp_v4_rcv+0x2245/0x3bc0"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - A target-supplied ISCSI_OP_REJECT traverses iscsi_sw_tcp_data_ready(), iscsi_tcp_recv_skb(), iscsi_tcp_data_recv_done(), iscsi_complete_pdu(), and __iscsi_complete_pdu() to the patched iscsi_handle_reject(); the forged NOOP_OUT ITT is carried in the Reject PDU data over routable TCP.\nAC:L - The target sees live SCSI ITTs in initiator commands and can withhold their responses before naming one in a forged Reject; alternatively, index 1 in a freshly bound kzalloc\u0027ed pool deterministically has task-\u003econn == NULL. No race or uncontrolled condition is required.\nPR:N - iscsi_sw_tcp_conn_bind() installs receive callbacks before iscsi_conn_start() marks the session logged in, while __iscsi_complete_pdu() and iscsi_handle_reject() impose no login-state or authentication check on Reject PDUs. A target can therefore trigger the crash during login without credentials.\nUI:N - Once a configured initiator binds or automatically reconnects its iSCSI socket, the target\u0027s Reject is processed directly by iscsi_sw_tcp_data_ready(); selecting an unused task slot requires no victim read, mount, or other action.\nS:U - iscsi_handle_reject() corrupts task completion state or faults within the initiator host kernel; it does not cross a VM, IOMMU, or separate security-authority boundary.\nC:H - For a READ ITT, iscsi_nop_out_rsp() reaches iscsi_complete_task() and scsi_done() with sc-\u003eresult still zero despite no Data-In; non-zeroed page-cache folios can consequently be marked uptodate and exposed as valid data, with the commit demonstrating a 1 MiB untouched read.\nI:H - The unchecked ITT lets iscsi_nop_out_rsp() falsely complete any observed in-flight SCSI task successfully; untouched READ buffers become valid filesystem data and WRITE commands can be acknowledged without commitment, permitting silent persistent storage or filesystem corruption.\nA:H - Selecting a never-used pool slot returns a task whose kzalloc\u0027ed task-\u003econn is NULL, which iscsi_nop_out_rsp() dereferences; the commit records the resulting general-protection fault, so one crafted Reject can oops or panic the host."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-31T12:44:04.972Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3637a4ad1d07477f1c60609876da6b60154d224b"
        },
        {
          "url": "https://git.kernel.org/stable/c/21ef746340ce246344f34278e205b8960c1d8874"
        },
        {
          "url": "https://git.kernel.org/stable/c/d20583a9dbe0d32a9af8384c857c95c0fc115103"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebb8c5ef2aabf66895253600e8390e8fc7094807"
        },
        {
          "url": "https://git.kernel.org/stable/c/576125e7382a7826bd6c3c1ca4d9c582ed5be21d"
        },
        {
          "url": "https://git.kernel.org/stable/c/7215a69b6456fda79c0935c2959045dff3fcaac8"
        },
        {
          "url": "https://git.kernel.org/stable/c/d79343ae3223b3f7f74b55e79f8a1371fa3f4b1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5958c770b2a0ee492414e26b07da9164a0d1f5d"
        }
      ],
      "title": "scsi: libiscsi: Validate the ITT reflected in a Reject PDU",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99153",
    "datePublished": "2026-10-28T10:35:08.287Z",
    "dateReserved": "2026-09-25T10:25:14.396Z",
    "dateUpdated": "2026-10-31T12:44:04.972Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}