264 lines
16 KiB
JSON
264 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-99152",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.396Z",
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"datePublished": "2026-10-28T10:35:07.622Z",
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"dateUpdated": "2026-10-31T12:44:00.040Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-31T12:44:00.040Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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->itt);\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->conn 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 <80> 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] <IRQ>\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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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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->conn 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's NOP-In immediately; no user must open data or perform another action.\nS:U - __iscsi_complete_pdu() misidentifies a task inside the host kernel's 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->ping_task through the NULL task->conn 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's 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->conn at conn->ping_task, producing the demonstrated general-protection fault in IRQ context and potentially panicking the kernel."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/libiscsi.c"
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],
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"versions": [
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "bf4035656852a386fecb5d6217710a1bde536e76",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "5b56229cc152095fbe4e4ff537cb206c4aa41610",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "7a7a473aec51195778a54fdd71f20fda3047b8ef",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "77134cf996bab55683f0ceafb9e300d97ac046f8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "e96ae694c5038aae84142b64e41b56324b7af9a7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "55a65ef61e2775aeb18fda63bd1959fa8b41f936",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "f721487523d45941aed4b0ac8d829b0461a7d860",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8",
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"lessThan": "11bffcd9cb346732eab2914ef44fe777a3f0b585",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/libiscsi.c"
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],
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"versions": [
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{
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"version": "2.6.18",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.18",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.224",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.161",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.115",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.59",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.13",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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"versionEndExcluding": "5.10.273"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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"versionEndExcluding": "7.2.13"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.18",
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/bf4035656852a386fecb5d6217710a1bde536e76"
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},
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{
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"url": "https://git.kernel.org/stable/c/5b56229cc152095fbe4e4ff537cb206c4aa41610"
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},
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{
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"url": "https://git.kernel.org/stable/c/7a7a473aec51195778a54fdd71f20fda3047b8ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/77134cf996bab55683f0ceafb9e300d97ac046f8"
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},
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{
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"url": "https://git.kernel.org/stable/c/e96ae694c5038aae84142b64e41b56324b7af9a7"
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},
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{
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"url": "https://git.kernel.org/stable/c/55a65ef61e2775aeb18fda63bd1959fa8b41f936"
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},
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{
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"url": "https://git.kernel.org/stable/c/f721487523d45941aed4b0ac8d829b0461a7d860"
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},
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{
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"url": "https://git.kernel.org/stable/c/11bffcd9cb346732eab2914ef44fe777a3f0b585"
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}
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],
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"title": "scsi: libiscsi: Validate the task named by a management response",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |