222 lines
13 KiB
JSON
222 lines
13 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-2023-54184",
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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": "2025-12-30T12:06:44.497Z",
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"datePublished": "2025-12-30T12:08:54.528Z",
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"dateUpdated": "2026-08-05T09:17:52.229Z"
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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": "2026-08-05T09:17:52.229Z"
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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: target: iscsit: Free cmds before session free\n\nCommands from recovery entries are freed after session has been closed.\nThat leads to use-after-free at command free or NPE with such call trace:\n\nTime2Retain timer expired for SID: 1, cleaning up iSCSI session.\nBUG: kernel NULL pointer dereference, address: 0000000000000140\nRIP: 0010:sbitmap_queue_clear+0x3a/0xa0\nCall Trace:\n target_release_cmd_kref+0xd1/0x1f0 [target_core_mod]\n transport_generic_free_cmd+0xd1/0x180 [target_core_mod]\n iscsit_free_cmd+0x53/0xd0 [iscsi_target_mod]\n iscsit_free_connection_recovery_entries+0x29d/0x320 [iscsi_target_mod]\n iscsit_close_session+0x13a/0x140 [iscsi_target_mod]\n iscsit_check_post_dataout+0x440/0x440 [iscsi_target_mod]\n call_timer_fn+0x24/0x140\n\nMove cleanup of recovery enrties to before session freeing."
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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:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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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 - The LIO in-kernel iSCSI target (drivers/target/iscsi) serves remote initiators over TCP/3260, and the entire trigger sequence — ERL=2 login negotiation, issuing SCSI commands, and dropping the connection to strand them in a recovery entry — is performed purely with network PDUs from a remote peer.\nAC:L - The free-then-use ordering in iscsit_close_session() is unconditional, not a race, so a remote initiator deterministically reaches it by negotiating ErrorRecoveryLevel=2, leaving commands outstanding, and dropping the TCP connection until the Time2Retain timer expires; connection-recovery (default_erl=2) is a supported deployment configuration, i.e. part of the vulnerable configuration rather than a condition outside the attacker's control.\nPR:N - iscsi_conn_auth_required() defers entirely to the TPG/ACL authentication attribute, and iSCSI targets are routinely deployed with authentication disabled and/or generate_node_acls=1 (demo mode), letting any host that can reach TCP/3260 establish a normal session with no credentials whatsoever.\nUI:N - No action by any local user or administrator is needed; the attacker drives session setup, connection failure, and the Time2Retain expiry entirely from the network.\nS:U - The use-after-free corrupts kernel memory within the same security authority as the vulnerable kernel; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - iscsit_free_cmd() dereferences struct iscsit_cmd objects living inside the kvfree'd sess_cmd_map and the freed se_sess, so contents of reallocated kernel memory are read back and acted upon; an attacker who reclaims that region with sprayed iSCSI data gains a controlled read/disclosure primitive.\nI:H - The UAF writes into freed memory (list_del_init on datain/r2t lists, cmd->conn = NULL, spinlock acquisition, sbitmap_queue_clear into the freed tag pool) and performs kfree() on cmd->buf_ptr and cmd->pdu_list pointers read out of freed memory, yielding arbitrary-free and heap-corruption primitives suitable for control-flow hijacking.\nA:H - The reported failure is a kernel NULL pointer dereference in sbitmap_queue_clear() from call_timer_fn() (softirq context), an immediate oops/panic that a remote attacker can trigger repeatedly by opening and abandoning sessions."
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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/target/iscsi/iscsi_target.c"
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],
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"versions": [
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{
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"version": "988e3a85463d9b6dabc681df3f8f131b23c19953",
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"lessThan": "89f5055f9b0b57c7e7f02e32df95ef401f809b71",
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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": "988e3a85463d9b6dabc681df3f8f131b23c19953",
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"lessThan": "4621e24c9257c6379343bf0c11b473817cf7edcd",
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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": "988e3a85463d9b6dabc681df3f8f131b23c19953",
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"lessThan": "1911cca5916b6e106de7afa3ec0a38447158216c",
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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": "988e3a85463d9b6dabc681df3f8f131b23c19953",
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"lessThan": "a7a4def6c7046e090bb10c6d550fdeb487db98ba",
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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": "988e3a85463d9b6dabc681df3f8f131b23c19953",
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"lessThan": "4ce221d295f53e6c6b835ab33181e735482c9aac",
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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": "988e3a85463d9b6dabc681df3f8f131b23c19953",
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"lessThan": "d8990b5a4d065f38f35d69bcd627ec5a7f8330ca",
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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/target/iscsi/iscsi_target.c"
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],
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"versions": [
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{
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"version": "3.12",
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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": "3.12",
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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": "5.4.244",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.181",
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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": "5.15.113",
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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": "6.1.30",
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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": "6.3.4",
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"lessThanOrEqual": "6.3.*",
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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": "6.4",
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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": "3.12",
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"versionEndExcluding": "5.4.244"
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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": "3.12",
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"versionEndExcluding": "5.10.181"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.12",
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"versionStartIncluding": "3.12",
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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": "3.12",
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}
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]
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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/89f5055f9b0b57c7e7f02e32df95ef401f809b71"
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},
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{
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"url": "https://git.kernel.org/stable/c/4621e24c9257c6379343bf0c11b473817cf7edcd"
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},
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{
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"url": "https://git.kernel.org/stable/c/1911cca5916b6e106de7afa3ec0a38447158216c"
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},
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{
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"url": "https://git.kernel.org/stable/c/a7a4def6c7046e090bb10c6d550fdeb487db98ba"
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},
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{
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"url": "https://git.kernel.org/stable/c/4ce221d295f53e6c6b835ab33181e735482c9aac"
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},
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{
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"url": "https://git.kernel.org/stable/c/d8990b5a4d065f38f35d69bcd627ec5a7f8330ca"
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}
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],
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"title": "scsi: target: iscsit: Free cmds before session free",
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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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} |