{ "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-2021-47023", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47023", "idYear": 2021, "status": "PUBLISHED", "publishedAt": "2024-02-28T08:13:35.861Z", "updatedAt": "2026-05-11T13:46:28.016Z", "importedAt": "2026-10-24T01:56:36.661Z", "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": "net: marvell: prestera: fix port event handling on init", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: marvell: prestera: fix port event handling on init\n\nFor some reason there might be a crash during ports creation if port\nevents are handling at the same time because fw may send initial\nport event with down state.\n\nThe crash points to cancel_delayed_work() which is called when port went\nis down. Currently I did not find out the real cause of the issue, so\nfixed it by cancel port stats work only if previous port's state was up\n& runnig.\n\nThe following is the crash which can be triggered:\n\n[ 28.311104] Unable to handle kernel paging request at virtual address\n000071775f776600\n[ 28.319097] Mem abort info:\n[ 28.321914] ESR = 0x96000004\n[ 28.324996] EC = 0x25: DABT (current EL), IL = 32 bits\n[ 28.330350] SET = 0, FnV = 0\n[ 28.333430] EA = 0, S1PTW = 0\n[ 28.336597] Data abort info:\n[ 28.339499] ISV = 0, ISS = 0x00000004\n[ 28.343362] CM = 0, WnR = 0\n[ 28.346354] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000100bf7000\n[ 28.352842] [000071775f776600] pgd=0000000000000000,\np4d=0000000000000000\n[ 28.359695] Internal error: Oops: 96000004 [#1] PREEMPT SMP\n[ 28.365310] Modules linked in: prestera_pci(+) prestera\nuio_pdrv_genirq\n[ 28.372005] CPU: 0 PID: 1291 Comm: kworker/0:1H Not tainted\n5.11.0-rc4 #1\n[ 28.378846] Hardware name: DNI AmazonGo1 A7040 board (DT)\n[ 28.384283] Workqueue: prestera_fw_wq prestera_fw_evt_work_fn\n[prestera_pci]\n[ 28.391413] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)\n[ 28.397468] pc : get_work_pool+0x48/0x60\n[ 28.401442] lr : try_to_grab_pending+0x6c/0x1b0\n[ 28.406018] sp : ffff80001391bc60\n[ 28.409358] x29: ffff80001391bc60 x28: 0000000000000000\n[ 28.414725] x27: ffff000104fc8b40 x26: ffff80001127de88\n[ 28.420089] x25: 0000000000000000 x24: ffff000106119760\n[ 28.425452] x23: ffff00010775dd60 x22: ffff00010567e000\n[ 28.430814] x21: 0000000000000000 x20: ffff80001391bcb0\n[ 28.436175] x19: ffff00010775deb8 x18: 00000000000000c0\n[ 28.441537] x17: 0000000000000000 x16: 000000008d9b0e88\n[ 28.446898] x15: 0000000000000001 x14: 00000000000002ba\n[ 28.452261] x13: 80a3002c00000002 x12: 00000000000005f4\n[ 28.457622] x11: 0000000000000030 x10: 000000000000000c\n[ 28.462985] x9 : 000000000000000c x8 : 0000000000000030\n[ 28.468346] x7 : ffff800014400000 x6 : ffff000106119758\n[ 28.473708] x5 : 0000000000000003 x4 : ffff00010775dc60\n[ 28.479068] x3 : 0000000000000000 x2 : 0000000000000060\n[ 28.484429] x1 : 000071775f776600 x0 : ffff00010775deb8\n[ 28.489791] Call trace:\n[ 28.492259] get_work_pool+0x48/0x60\n[ 28.495874] cancel_delayed_work+0x38/0xb0\n[ 28.500011] prestera_port_handle_event+0x90/0xa0 [prestera]\n[ 28.505743] prestera_evt_recv+0x98/0xe0 [prestera]\n[ 28.510683] prestera_fw_evt_work_fn+0x180/0x228 [prestera_pci]\n[ 28.516660] process_one_work+0x1e8/0x360\n[ 28.520710] worker_thread+0x44/0x480\n[ 28.524412] kthread+0x154/0x160\n[ 28.527670] ret_from_fork+0x10/0x38\n[ 28.531290] Code: a8c17bfd d50323bf d65f03c0 9278dc21 (f9400020)\n[ 28.537429] ---[ end trace 5eced933df3a080b ]---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "501ef3066c89d7f9045315e1be58749cf9e6814d", "status": "affected", "versionType": "git", "lessThan": "0ce6052802be2cb61a57b753e41301339c88c839" }, { "version": "501ef3066c89d7f9045315e1be58749cf9e6814d", "status": "affected", "versionType": "git", "lessThan": "b5bba6ede42693f50ce1c9944315cefed7491061" }, { "version": "501ef3066c89d7f9045315e1be58749cf9e6814d", "status": "affected", "versionType": "git", "lessThan": "9d1ba11fabdd8f25abb24272ef1621417981320b" }, { "version": "501ef3066c89d7f9045315e1be58749cf9e6814d", "status": "affected", "versionType": "git", "lessThan": "333980481b99edb24ebd5d1a53af70a15d9146de" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.10" }, { "version": "5.10.37", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.11.21", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.11.*" }, { "version": "5.12.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.12.*" }, { "version": "5.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }