{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-45898", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-45898", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-05-27T12:17:07.737Z", "updatedAt": "2026-10-19T19:26:39.480Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "RDMA/iwcm: Fix workqueue list corruption by removing work_list", "summary": "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] \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] ", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "e1168f09b3314992f1c5251f3793102035da7237", "status": "affected", "versionType": "git", "lessThan": "38c5b49fffa1b760959af74f11806eeb3ef4706d" }, { "version": "e1168f09b3314992f1c5251f3793102035da7237", "status": "affected", "versionType": "git", "lessThan": "eb715133e0ae12514bba4d2d5ce1dee774476056" }, { "version": "e1168f09b3314992f1c5251f3793102035da7237", "status": "affected", "versionType": "git", "lessThan": "a6b9e793e74e372daa266fd0d58b751305877897" }, { "version": "e1168f09b3314992f1c5251f3793102035da7237", "status": "affected", "versionType": "git", "lessThan": "7874eeacfa42177565c01d5198726671acf7adf2" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.11" }, { "version": "6.12.75", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.14", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.19.*" }, { "version": "7.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }