{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53233", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T14:19:21.847Z", "datePublished": "2025-09-15T14:22:05.378Z", "dateUpdated": "2026-05-11T19:40:49.189Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:40:49.189Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix deadlock triggered by cancel_delayed_work_syn()\n\nThe following LOCKDEP was detected:\n\t\tWorkqueue: events smc_lgr_free_work [smc]\n\t\tWARNING: possible circular locking dependency detected\n\t\t6.1.0-20221027.rc2.git8.56bc5b569087.300.fc36.s390x+debug #1 Not tainted\n\t\t------------------------------------------------------\n\t\tkworker/3:0/176251 is trying to acquire lock:\n\t\t00000000f1467148 ((wq_completion)smc_tx_wq-00000000#2){+.+.}-{0:0},\n\t\t\tat: __flush_workqueue+0x7a/0x4f0\n\t\tbut task is already holding lock:\n\t\t0000037fffe97dc8 ((work_completion)(&(&lgr->free_work)->work)){+.+.}-{0:0},\n\t\t\tat: process_one_work+0x232/0x730\n\t\twhich lock already depends on the new lock.\n\t\tthe existing dependency chain (in reverse order) is:\n\t\t-> #4 ((work_completion)(&(&lgr->free_work)->work)){+.+.}-{0:0}:\n\t\t __lock_acquire+0x58e/0xbd8\n\t\t lock_acquire.part.0+0xe2/0x248\n\t\t lock_acquire+0xac/0x1c8\n\t\t __flush_work+0x76/0xf0\n\t\t __cancel_work_timer+0x170/0x220\n\t\t __smc_lgr_terminate.part.0+0x34/0x1c0 [smc]\n\t\t smc_connect_rdma+0x15e/0x418 [smc]\n\t\t __smc_connect+0x234/0x480 [smc]\n\t\t smc_connect+0x1d6/0x230 [smc]\n\t\t __sys_connect+0x90/0xc0\n\t\t __do_sys_socketcall+0x186/0x370\n\t\t __do_syscall+0x1da/0x208\n\t\t system_call+0x82/0xb0\n\t\t-> #3 (smc_client_lgr_pending){+.+.}-{3:3}:\n\t\t __lock_acquire+0x58e/0xbd8\n\t\t lock_acquire.part.0+0xe2/0x248\n\t\t lock_acquire+0xac/0x1c8\n\t\t __mutex_lock+0x96/0x8e8\n\t\t mutex_lock_nested+0x32/0x40\n\t\t smc_connect_rdma+0xa4/0x418 [smc]\n\t\t __smc_connect+0x234/0x480 [smc]\n\t\t smc_connect+0x1d6/0x230 [smc]\n\t\t __sys_connect+0x90/0xc0\n\t\t __do_sys_socketcall+0x186/0x370\n\t\t __do_syscall+0x1da/0x208\n\t\t system_call+0x82/0xb0\n\t\t-> #2 (sk_lock-AF_SMC){+.+.}-{0:0}:\n\t\t __lock_acquire+0x58e/0xbd8\n\t\t lock_acquire.part.0+0xe2/0x248\n\t\t lock_acquire+0xac/0x1c8\n\t\t lock_sock_nested+0x46/0xa8\n\t\t smc_tx_work+0x34/0x50 [smc]\n\t\t process_one_work+0x30c/0x730\n\t\t worker_thread+0x62/0x420\n\t\t kthread+0x138/0x150\n\t\t __ret_from_fork+0x3c/0x58\n\t\t ret_from_fork+0xa/0x40\n\t\t-> #1 ((work_completion)(&(&smc->conn.tx_work)->work)){+.+.}-{0:0}:\n\t\t __lock_acquire+0x58e/0xbd8\n\t\t lock_acquire.part.0+0xe2/0x248\n\t\t lock_acquire+0xac/0x1c8\n\t\t process_one_work+0x2bc/0x730\n\t\t worker_thread+0x62/0x420\n\t\t kthread+0x138/0x150\n\t\t __ret_from_fork+0x3c/0x58\n\t\t ret_from_fork+0xa/0x40\n\t\t-> #0 ((wq_completion)smc_tx_wq-00000000#2){+.+.}-{0:0}:\n\t\t check_prev_add+0xd8/0xe88\n\t\t validate_chain+0x70c/0xb20\n\t\t __lock_acquire+0x58e/0xbd8\n\t\t lock_acquire.part.0+0xe2/0x248\n\t\t lock_acquire+0xac/0x1c8\n\t\t __flush_workqueue+0xaa/0x4f0\n\t\t drain_workqueue+0xaa/0x158\n\t\t destroy_workqueue+0x44/0x2d8\n\t\t smc_lgr_free+0x9e/0xf8 [smc]\n\t\t process_one_work+0x30c/0x730\n\t\t worker_thread+0x62/0x420\n\t\t kthread+0x138/0x150\n\t\t __ret_from_fork+0x3c/0x58\n\t\t ret_from_fork+0xa/0x40\n\t\tother info that might help us debug this:\n\t\tChain exists of:\n\t\t (wq_completion)smc_tx_wq-00000000#2\n\t \t --> smc_client_lgr_pending\n\t\t --> (work_completion)(&(&lgr->free_work)->work)\n\t\t Possible unsafe locking scenario:\n\t\t CPU0 CPU1\n\t\t ---- ----\n\t\t lock((work_completion)(&(&lgr->free_work)->work));\n\t\t lock(smc_client_lgr_pending);\n\t\t lock((work_completion)\n\t\t\t\t\t(&(&lgr->free_work)->work));\n\t\t lock((wq_completion)smc_tx_wq-00000000#2);\n\t\t *** DEADLOCK ***\n\t\t2 locks held by kworker/3:0/176251:\n\t\t #0: 0000000080183548\n\t\t\t((wq_completion)events){+.+.}-{0:0},\n\t\t\t\tat: process_one_work+0x232/0x730\n\t\t #1: 0000037fffe97dc8\n\t\t\t((work_completion)\n\t\t\t (&(&lgr->free_work)->work)){+.+.}-{0:0},\n\t\t\t\tat: process_one_work+0x232/0x730\n\t\tstack backtr\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/smc/smc_core.c" ], "versions": [ { "version": "a52bcc919b14c9d78f03b2b4ff604e5ca69c7e6d", "lessThan": "9708efad9ba5095b9bb7916e11a135b3bd66c071", "status": "affected", "versionType": "git" }, { "version": "a52bcc919b14c9d78f03b2b4ff604e5ca69c7e6d", "lessThan": "b615238e5bc01e13dc0610febddc1ca99bab1df6", "status": "affected", "versionType": "git" }, { "version": "a52bcc919b14c9d78f03b2b4ff604e5ca69c7e6d", "lessThan": "3517584cf1b35bd02f4a90267ddf9dcf17bd9c87", "status": "affected", "versionType": "git" }, { "version": "a52bcc919b14c9d78f03b2b4ff604e5ca69c7e6d", "lessThan": "c9ca2257150272df1b8d9ebe5059197ffea6e913", "status": "affected", "versionType": "git" }, { "version": "a52bcc919b14c9d78f03b2b4ff604e5ca69c7e6d", "lessThan": "13085e1b5cab8ad802904d72e6a6dae85ae0cd20", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/smc/smc_core.c" ], "versions": [ { "version": "5.8", "status": "affected" }, { "version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.176", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.104", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.21", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.8", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "5.8", "versionEndExcluding": "5.10.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.104" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.21" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.2.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9708efad9ba5095b9bb7916e11a135b3bd66c071" }, { "url": "https://git.kernel.org/stable/c/b615238e5bc01e13dc0610febddc1ca99bab1df6" }, { "url": "https://git.kernel.org/stable/c/3517584cf1b35bd02f4a90267ddf9dcf17bd9c87" }, { "url": "https://git.kernel.org/stable/c/c9ca2257150272df1b8d9ebe5059197ffea6e913" }, { "url": "https://git.kernel.org/stable/c/13085e1b5cab8ad802904d72e6a6dae85ae0cd20" } ], "title": "net/smc: fix deadlock triggered by cancel_delayed_work_syn()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53233", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T17:55:41.706072Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:02:49.503Z" } } ] } }