{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53291", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T08:09:37.992Z", "datePublished": "2025-09-16T08:11:23.666Z", "dateUpdated": "2026-05-11T19:42:07.259Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:42:07.259Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale\n\nRunning the 'kfree_rcu_test' test case [1] results in a splat [2].\nThe root cause is the kfree_scale_thread thread(s) continue running\nafter unloading the rcuscale module. This commit fixes that isue by\ninvoking kfree_scale_cleanup() from rcu_scale_cleanup() when removing\nthe rcuscale module.\n\n[1] modprobe rcuscale kfree_rcu_test=1\n // After some time\n rmmod rcuscale\n rmmod torture\n\n[2] BUG: unable to handle page fault for address: ffffffffc0601a87\n #PF: supervisor instruction fetch in kernel mode\n #PF: error_code(0x0010) - not-present page\n PGD 11de4f067 P4D 11de4f067 PUD 11de51067 PMD 112f4d067 PTE 0\n Oops: 0010 [#1] PREEMPT SMP NOPTI\n CPU: 1 PID: 1798 Comm: kfree_scale_thr Not tainted 6.3.0-rc1-rcu+ #1\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015\n RIP: 0010:0xffffffffc0601a87\n Code: Unable to access opcode bytes at 0xffffffffc0601a5d.\n RSP: 0018:ffffb25bc2e57e18 EFLAGS: 00010297\n RAX: 0000000000000000 RBX: ffffffffc061f0b6 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: ffffffff962fd0de RDI: ffffffff962fd0de\n RBP: ffffb25bc2e57ea8 R08: 0000000000000000 R09: 0000000000000000\n R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000\n R13: 0000000000000000 R14: 000000000000000a R15: 00000000001c1dbe\n FS: 0000000000000000(0000) GS:ffff921fa2200000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: ffffffffc0601a5d CR3: 000000011de4c006 CR4: 0000000000370ee0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n \n ? kvfree_call_rcu+0xf0/0x3a0\n ? kthread+0xf3/0x120\n ? kthread_complete_and_exit+0x20/0x20\n ? ret_from_fork+0x1f/0x30\n \n Modules linked in: rfkill sunrpc ... [last unloaded: torture]\n CR2: ffffffffc0601a87\n ---[ end trace 0000000000000000 ]---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/rcu/rcuscale.c" ], "versions": [ { "version": "e6e78b004fa7e0ab455d46d27f218bf6ce178a18", "lessThan": "604d6a5ff718874904b0fe614878a42b42c0d699", "status": "affected", "versionType": "git" }, { "version": "e6e78b004fa7e0ab455d46d27f218bf6ce178a18", "lessThan": "f766d45ab294871a3d588ee76c666852f151cad9", "status": "affected", "versionType": "git" }, { "version": "e6e78b004fa7e0ab455d46d27f218bf6ce178a18", "lessThan": "b8a6ba524d41f4da102e65f90498d9a910839621", "status": "affected", "versionType": "git" }, { "version": "e6e78b004fa7e0ab455d46d27f218bf6ce178a18", "lessThan": "1dd7547c7610723b2b6afe1a3c4ddb2bde63387c", "status": "affected", "versionType": "git" }, { "version": "e6e78b004fa7e0ab455d46d27f218bf6ce178a18", "lessThan": "29b1da4f90fc42c91beb4e400d926194925ad31b", "status": "affected", "versionType": "git" }, { "version": "e6e78b004fa7e0ab455d46d27f218bf6ce178a18", "lessThan": "23fc8df26dead16687ae6eb47b0561a4a832e2f6", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/rcu/rcuscale.c" ], "versions": [ { "version": "5.6", "status": "affected" }, { "version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.188", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.39", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.13", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.4", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "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": "5.6", "versionEndExcluding": "5.10.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.3.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.4.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/604d6a5ff718874904b0fe614878a42b42c0d699" }, { "url": "https://git.kernel.org/stable/c/f766d45ab294871a3d588ee76c666852f151cad9" }, { "url": "https://git.kernel.org/stable/c/b8a6ba524d41f4da102e65f90498d9a910839621" }, { "url": "https://git.kernel.org/stable/c/1dd7547c7610723b2b6afe1a3c4ddb2bde63387c" }, { "url": "https://git.kernel.org/stable/c/29b1da4f90fc42c91beb4e400d926194925ad31b" }, { "url": "https://git.kernel.org/stable/c/23fc8df26dead16687ae6eb47b0561a4a832e2f6" } ], "title": "rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale", "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-2023-53291", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:11:07.607544Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:12:56.096Z" } } ] } }