{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45898", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.083Z", "datePublished": "2026-05-27T12:17:07.737Z", "dateUpdated": "2026-05-30T10:45:49.572Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-30T10:45:49.572Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/iwcm: Fix workqueue list corruption by removing work_list\n\nThe commit e1168f0 (\"RDMA/iwcm: Simplify cm_event_handler()\")\nchanged the work submission logic to unconditionally call\nqueue_work() with the expectation that queue_work() would\nhave no effect if work was already pending. The problem is\nthat a free list of struct iwcm_work is used (for which\nstruct work_struct is embedded), so each call to queue_work()\nis basically unique and therefore does indeed queue the work.\n\nThis causes a problem in the work handler which walks the work_list\nuntil it's empty to process entries. This means that a single\nrun of the work handler could process item N+1 and release it\nback to the free list while the actual workqueue entry is still\nqueued. It could then get reused (INIT_WORK...) and lead to\nlist corruption in the workqueue logic.\n\nFix this by just removing the work_list. The workqueue already\ndoes this for us.\n\nThis fixes the following error that was observed when stress\ntesting with ucmatose on an Intel E830 in iWARP mode:\n\n[ 151.465780] list_del corruption. next->prev should be ffff9f0915c69c08, but was ffff9f0a1116be08. (next=ffff9f0a15b11c08)\n[ 151.466639] ------------[ cut here ]------------\n[ 151.466986] kernel BUG at lib/list_debug.c:67!\n[ 151.467349] Oops: invalid opcode: 0000 [#1] SMP NOPTI\n[ 151.467753] CPU: 14 UID: 0 PID: 2306 Comm: kworker/u64:18 Not tainted 6.19.0-rc4+ #1 PREEMPT(voluntary)\n[ 151.468466] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 151.469192] Workqueue: 0x0 (iw_cm_wq)\n[ 151.469478] RIP: 0010:__list_del_entry_valid_or_report+0xf0/0x100\n[ 151.469942] Code: c7 58 5f 4c b2 e8 10 50 aa ff 0f 0b 48 89 ef e8 36 57 cb ff 48 8b 55 08 48 89 e9 48 89 de 48 c7 c7 a8 5f 4c b2 e8 f0 4f aa ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90\n[ 151.471323] RSP: 0000:ffffb15644e7bd68 EFLAGS: 00010046\n[ 151.471712] RAX: 000000000000006d RBX: ffff9f0915c69c08 RCX: 0000000000000027\n[ 151.472243] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9f0a37d9c600\n[ 151.472768] RBP: ffff9f0a15b11c08 R08: 0000000000000000 R09: c0000000ffff7fff\n[ 151.473294] R10: 0000000000000001 R11: ffffb15644e7bba8 R12: ffff9f092339ee68\n[ 151.473817] R13: ffff9f0900059c28 R14: ffff9f092339ee78 R15: 0000000000000000\n[ 151.474344] FS: 0000000000000000(0000) GS:ffff9f0a847b5000(0000) knlGS:0000000000000000\n[ 151.474934] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 151.475362] CR2: 0000559e233a9088 CR3: 000000020296b004 CR4: 0000000000770ef0\n[ 151.475895] PKRU: 55555554\n[ 151.476118] Call Trace:\n[ 151.476331] <TASK>\n[ 151.476497] move_linked_works+0x49/0xa0\n[ 151.476792] __pwq_activate_work.isra.46+0x2f/0xa0\n[ 151.477151] pwq_dec_nr_in_flight+0x1e0/0x2f0\n[ 151.477479] process_scheduled_works+0x1c8/0x410\n[ 151.477823] worker_thread+0x125/0x260\n[ 151.478108] ? __pfx_worker_thread+0x10/0x10\n[ 151.478430] kthread+0xfe/0x240\n[ 151.478671] ? __pfx_kthread+0x10/0x10\n[ 151.478955] ? __pfx_kthread+0x10/0x10\n[ 151.479240] ret_from_fork+0x208/0x270\n[ 151.479523] ? __pfx_kthread+0x10/0x10\n[ 151.479806] ret_from_fork_asm+0x1a/0x30\n[ 151.480103] </TASK>"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/core/iwcm.c", "drivers/infiniband/core/iwcm.h"], "versions": [{"version": "e1168f09b3314992f1c5251f3793102035da7237", "lessThan": "38c5b49fffa1b760959af74f11806eeb3ef4706d", "status": "affected", "versionType": "git"}, {"version": "e1168f09b3314992f1c5251f3793102035da7237", "lessThan": "eb715133e0ae12514bba4d2d5ce1dee774476056", "status": "affected", "versionType": "git"}, {"version": "e1168f09b3314992f1c5251f3793102035da7237", "lessThan": "a6b9e793e74e372daa266fd0d58b751305877897", "status": "affected", "versionType": "git"}, {"version": "e1168f09b3314992f1c5251f3793102035da7237", "lessThan": "7874eeacfa42177565c01d5198726671acf7adf2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/core/iwcm.c", "drivers/infiniband/core/iwcm.h"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/38c5b49fffa1b760959af74f11806eeb3ef4706d"}, {"url": "https://git.kernel.org/stable/c/eb715133e0ae12514bba4d2d5ce1dee774476056"}, {"url": "https://git.kernel.org/stable/c/a6b9e793e74e372daa266fd0d58b751305877897"}, {"url": "https://git.kernel.org/stable/c/7874eeacfa42177565c01d5198726671acf7adf2"}], "title": "RDMA/iwcm: Fix workqueue list corruption by removing work_list", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/infiniband/core/iwcm.c", "drivers/infiniband/core/iwcm.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "38c5b49fffa1b760959af74f11806eeb3ef4706d", "status": "affected", "version": "e1168f09b3314992f1c5251f3793102035da7237", "versionType": "git"}, {"lessThan": "eb715133e0ae12514bba4d2d5ce1dee774476056", "status": "affected", "version": "e1168f09b3314992f1c5251f3793102035da7237", "versionType": "git"}, {"lessThan": "a6b9e793e74e372daa266fd0d58b751305877897", "status": "affected", "version": "e1168f09b3314992f1c5251f3793102035da7237", "versionType": "git"}, {"lessThan": "7874eeacfa42177565c01d5198726671acf7adf2", "status": "affected", "version": "e1168f09b3314992f1c5251f3793102035da7237", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/infiniband/core/iwcm.c", "drivers/infiniband/core/iwcm.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.75", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.14", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/iwcm: Fix workqueue list corruption by removing work_list\n\nThe commit e1168f0 (\"RDMA/iwcm: Simplify cm_event_handler()\")\nchanged the work submission logic to unconditionally call\nqueue_work() with the expectation that queue_work() would\nhave no effect if work was already pending. The problem is\nthat a free list of struct iwcm_work is used (for which\nstruct work_struct is embedded), so each call to queue_work()\nis basically unique and therefore does indeed queue the work.\n\nThis causes a problem in the work handler which walks the work_list\nuntil it's empty to process entries. This means that a single\nrun of the work handler could process item N+1 and release it\nback to the free list while the actual workqueue entry is still\nqueued. It could then get reused (INIT_WORK...) and lead to\nlist corruption in the workqueue logic.\n\nFix this by just removing the work_list. The workqueue already\ndoes this for us.\n\nThis fixes the following error that was observed when stress\ntesting with ucmatose on an Intel E830 in iWARP mode:\n\n[ 151.465780] list_del corruption. next->prev should be ffff9f0915c69c08, but was ffff9f0a1116be08. (next=ffff9f0a15b11c08)\n[ 151.466639] ------------[ cut here ]------------\n[ 151.466986] kernel BUG at lib/list_debug.c:67!\n[ 151.467349] Oops: invalid opcode: 0000 [#1] SMP NOPTI\n[ 151.467753] CPU: 14 UID: 0 PID: 2306 Comm: kworker/u64:18 Not tainted 6.19.0-rc4+ #1 PREEMPT(voluntary)\n[ 151.468466] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 151.469192] Workqueue: 0x0 (iw_cm_wq)\n[ 151.469478] RIP: 0010:__list_del_entry_valid_or_report+0xf0/0x100\n[ 151.469942] Code: c7 58 5f 4c b2 e8 10 50 aa ff 0f 0b 48 89 ef e8 36 57 cb ff 48 8b 55 08 48 89 e9 48 89 de 48 c7 c7 a8 5f 4c b2 e8 f0 4f aa ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90\n[ 151.471323] RSP: 0000:ffffb15644e7bd68 EFLAGS: 00010046\n[ 151.471712] RAX: 000000000000006d RBX: ffff9f0915c69c08 RCX: 0000000000000027\n[ 151.472243] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9f0a37d9c600\n[ 151.472768] RBP: ffff9f0a15b11c08 R08: 0000000000000000 R09: c0000000ffff7fff\n[ 151.473294] R10: 0000000000000001 R11: ffffb15644e7bba8 R12: ffff9f092339ee68\n[ 151.473817] R13: ffff9f0900059c28 R14: ffff9f092339ee78 R15: 0000000000000000\n[ 151.474344] FS: 0000000000000000(0000) GS:ffff9f0a847b5000(0000) knlGS:0000000000000000\n[ 151.474934] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 151.475362] CR2: 0000559e233a9088 CR3: 000000020296b004 CR4: 0000000000770ef0\n[ 151.475895] PKRU: 55555554\n[ 151.476118] Call Trace:\n[ 151.476331] <TASK>\n[ 151.476497] move_linked_works+0x49/0xa0\n[ 151.476792] __pwq_activate_work.isra.46+0x2f/0xa0\n[ 151.477151] pwq_dec_nr_in_flight+0x1e0/0x2f0\n[ 151.477479] process_scheduled_works+0x1c8/0x410\n[ 151.477823] worker_thread+0x125/0x260\n[ 151.478108] ? __pfx_worker_thread+0x10/0x10\n[ 151.478430] kthread+0xfe/0x240\n[ 151.478671] ? __pfx_kthread+0x10/0x10\n[ 151.478955] ? __pfx_kthread+0x10/0x10\n[ 151.479240] ret_from_fork+0x208/0x270\n[ 151.479523] ? __pfx_kthread+0x10/0x10\n[ 151.479806] ret_from_fork_asm+0x1a/0x30\n[ 151.480103] </TASK>"}], "id": "CVE-2026-45898", "lastModified": "2026-06-17T10:52:41.597", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-05-27T14:17:04.080", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38c5b49fffa1b760959af74f11806eeb3ef4706d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7874eeacfa42177565c01d5198726671acf7adf2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6b9e793e74e372daa266fd0d58b751305877897"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb715133e0ae12514bba4d2d5ce1dee774476056"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: RDMA/iwcm: Fix workqueue list corruption by removing work_list", "id": "2482031", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482031"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-1341", "details": ["A flaw was found in the Linux kernel's Remote Direct Memory Access (RDMA) Internet Wide Area RDMA Protocol (iWARP) subsystem. Incorrect work submission logic in the `iwcm` component can lead to multiple queueing of work items. This allows a work item to be processed and freed while still present in the workqueue, causing list corruption. A successful exploitation of this vulnerability can result in a kernel bug and system crash, leading to a Denial of Service (DoS)."], "name": "CVE-2026-45898", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45898\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45898\nhttps://lore.kernel.org/linux-cve-announce/2026052719-CVE-2026-45898-3b64@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e1168f09b3314992f1c5251f3793102035da7237,38c5b49fffa1b760959af74f11806eeb3ef4706d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e1168f09b3314992f1c5251f3793102035da7237,eb715133e0ae12514bba4d2d5ce1dee774476056)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e1168f09b3314992f1c5251f3793102035da7237,a6b9e793e74e372daa266fd0d58b751305877897)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e1168f09b3314992f1c5251f3793102035da7237,7874eeacfa42177565c01d5198726671acf7adf2)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.14,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.4,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-27T16:00:08.702221+00:00", "updated": "2026-05-30T13:15:24.259686+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}