{
  "cveId": "CVE-2026-99152",
  "url": "https://patchblox.com/security/cve/CVE-2026-99152",
  "summary": "CVE-2026-99152 is fixed in linux on 1 platform by DEBIAN-CVE-2026-99152 (version 6.12.115-2), released November 3, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "scsi: libiscsi: Validate the task named by a management response",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  scsi: libiscsi: Validate the task named by a management response  __iscsi_complete_pdu() fetches the task for five response types from one place and checks only that the index resolved:        case ISCSI_OP_LOGOUT_RSP:       case ISCSI_OP_LOGIN_RSP:       case ISCSI_OP_TEXT_RSP:       case ISCSI_OP_SCSI_TMFUNC_RSP:       case ISCSI_OP_NOOP_IN:               task = iscsi_itt_to_task(conn, hdr-\u003Eitt);               if (!task)                       return ISCSI_ERR_BAD_ITT;  iscsi_itt_to_task() bounds the index against cmds_max and looks at nothing else, so a target can name any slot in the pool, including one that has never been used. task-\u003Econn is then NULL, and both iscsi_nop_out_rsp() and iscsi_complete_task() dereference it. One unsolicited NOP-In is enough; a Text Response carrying the same ITT crashes in iscsi_complete_task() instead.  Require the task to be in flight and not a SCSI command, the way iscsi_itt_to_ctask() does for the command opcodes.  [    6.298634] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN NOPTI [    6.298642] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [    6.298652] CPU: 1 UID: 0 PID: 111 Comm: iscsistart Not tainted 7.2.0-rc5-ISCSI1-gf5098b6bae76 #1 PREEMPT(lazy) [    6.298654] Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX \u002B PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [    6.298656] RIP: 0010:iscsi_nop_out_rsp.constprop.0\u002B0x46/0x160 [    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 [    6.298698] RSP: 0018:ffff88806c907be8 EFLAGS: 00010206 [    6.298701] RAX: dffffc0000000000 RBX: ffff888006116800 RCX: 0000000000000020 [    6.298702] RDX: 000000000000000c RSI: ffff88800525d578 RDI: 0000000000000060 [    6.298703] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [    6.298706] R10: 0000000000000020 R11: 0000000000000000 R12: 0000000000000000 [    6.298706] R13: 000000000000002e R14: ffff8880056eb440 R15: ffff888006116800 [    6.298707] FS:  00007fc02d1c2740(0000) GS:ffff8880b29bc000(0000) knlGS:0000000000000000 [    6.298710] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [    6.298711] CR2: 000055fe3b56ddf8 CR3: 00000000053b9004 CR4: 0000000000770ef0 [    6.298712] PKRU: 55555554 [    6.298713] Call Trace: [    6.298714]  \u003CIRQ\u003E [    6.298714]  __iscsi_complete_pdu\u002B0x13a8/0x22a0 [    6.298758]  iscsi_complete_pdu\u002B0x54/0xa0 [    6.298759]  iscsi_tcp_hdr_recv_done\u002B0x870/0x2c80 [    6.298778]  iscsi_tcp_recv_skb\u002B0x31e/0xec0 [    6.298800]  iscsi_sw_tcp_recv\u002B0x12f/0x390 [    6.298804]  __tcp_read_sock\u002B0x1ab/0x810 [    6.298812]  iscsi_sw_tcp_data_ready\u002B0x18b/0x510 [    6.298814]  tcp_rcv_established\u002B0x1f56/0x3a00 [    6.298842]  tcp_v4_do_rcv\u002B0x449/0x960 [    6.298847]  tcp_v4_rcv\u002B0x2245/0x3bc0",
  "published": "2026-10-28T11:17:35Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00523,
  "epssPercentile": 0.44651,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99152",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-99152",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99152",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}