{ "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-2021-47633", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47633", "idYear": 2021, "status": "PUBLISHED", "publishedAt": "2025-02-26T01:54:08.651Z", "updatedAt": "2026-05-11T13:58:10.164Z", "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": "ath5k: fix OOB in ath5k_eeprom_read_pcal_info_5111", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nath5k: fix OOB in ath5k_eeprom_read_pcal_info_5111\n\nThe bug was found during fuzzing. Stacktrace locates it in\nath5k_eeprom_convert_pcal_info_5111.\nWhen none of the curve is selected in the loop, idx can go\nup to AR5K_EEPROM_N_PD_CURVES. The line makes pd out of bound.\npd = &chinfo[pier].pd_curves[idx];\n\nThere are many OOB writes using pd later in the code. So I\nadded a sanity check for idx. Checks for other loops involving\nAR5K_EEPROM_N_PD_CURVES are not needed as the loop index is not\nused outside the loops.\n\nThe patch is NOT tested with real device.\n\nThe following is the fuzzing report\n\nBUG: KASAN: slab-out-of-bounds in ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k]\nWrite of size 1 at addr ffff8880174a4d60 by task modprobe/214\n\nCPU: 0 PID: 214 Comm: modprobe Not tainted 5.6.0 #1\nCall Trace:\n dump_stack+0x76/0xa0\n print_address_description.constprop.0+0x16/0x200\n ? ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k]\n ? ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k]\n __kasan_report.cold+0x37/0x7c\n ? ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k]\n kasan_report+0xe/0x20\n ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k]\n ? apic_timer_interrupt+0xa/0x20\n ? ath5k_eeprom_init_11a_pcal_freq+0xbc0/0xbc0 [ath5k]\n ? ath5k_pci_eeprom_read+0x228/0x3c0 [ath5k]\n ath5k_eeprom_init+0x2513/0x6290 [ath5k]\n ? ath5k_eeprom_init_11a_pcal_freq+0xbc0/0xbc0 [ath5k]\n ? usleep_range+0xb8/0x100\n ? apic_timer_interrupt+0xa/0x20\n ? ath5k_eeprom_read_pcal_info_2413+0x2f20/0x2f20 [ath5k]\n ath5k_hw_init+0xb60/0x1970 [ath5k]\n ath5k_init_ah+0x6fe/0x2530 [ath5k]\n ? kasprintf+0xa6/0xe0\n ? ath5k_stop+0x140/0x140 [ath5k]\n ? _dev_notice+0xf6/0xf6\n ? apic_timer_interrupt+0xa/0x20\n ath5k_pci_probe.cold+0x29a/0x3d6 [ath5k]\n ? ath5k_pci_eeprom_read+0x3c0/0x3c0 [ath5k]\n ? mutex_lock+0x89/0xd0\n ? ath5k_pci_eeprom_read+0x3c0/0x3c0 [ath5k]\n local_pci_probe+0xd3/0x160\n pci_device_probe+0x23f/0x3e0\n ? pci_device_remove+0x280/0x280\n ? pci_device_remove+0x280/0x280\n really_probe+0x209/0x5d0", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "f4de974019a0adf34d0e7de6b86252f1bd266b06" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "ed3dfdaa8b5f0579eabfc1c5818eed30cfe1fe84" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "25efc5d03455c3839249bc77fce5e29ecb54677e" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "c4e2f577271e158d87a916afb4e87415a88ce856" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "9d7d83d0399e23d66fd431b553842a84ac10398f" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "be2f81024e7981565d90a4c9ca3067d11b6bca7f" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "fc8f7752a82f4accb99c0f1a868906ba1eb7b86f" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "cbd96d6cad6625feba9c8d101ed4977d53e82f8e" }, { "version": "8e218fb24faef0bfe95bc91b3c05261e20439527", "status": "affected", "versionType": "git", "lessThan": "564d4eceb97eaf381dd6ef6470b06377bb50c95a" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.30", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.30" }, { "version": "4.9.311", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.9.*" }, { "version": "4.14.276", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.238", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.189", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.111", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.34", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.16.20", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.16.*" }, { "version": "5.17.3", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.17.*" }, { "version": "5.18", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }