{ "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-2026-80795", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80795", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-09-04T15:13:08.640Z", "updatedAt": "2026-10-19T08:43:48.491Z", "importedAt": "2026-10-24T01:58:30.346Z", "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": "nfc: nci: fix out-of-bounds write in nci_target_auto_activated()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix out-of-bounds write in nci_target_auto_activated()\n\nnci_target_auto_activated() appends a target to the fixed-size array\nndev->targets[NCI_MAX_DISCOVERED_TARGETS] and increments ndev->n_targets\nwithout first checking the array is full; unlike its sibling\nnci_add_new_target(), which bails out when n_targets already equals\nNCI_MAX_DISCOVERED_TARGETS.\n\nndev->n_targets is only cleared by nci_clear_target_list(), so an NFCC\nthat repeatedly re-runs discovery (RF_DISCOVER_RSP, which re-enters\nNCI_DISCOVERY without clearing the target list) and reports an\nauto-activated target (RF_INTF_ACTIVATED_NTF) drives n_targets past the\nlimit. The append then writes a struct nfc_target past the end of the\narray (a slab out-of-bounds write), and nfc_targets_found() goes on to\nwalk the array with the inflated count:\n\n BUG: KASAN: slab-out-of-bounds in nci_add_new_protocol+0x94/0x2ac [nci]\n Write of size 2 at addr ffff0000c7299a18 by task kworker/u8:0/12\n Workqueue: nfc0_nci_rx_wq nci_rx_work [nci]\n Call trace:\n nci_add_new_protocol+0x94/0x2ac [nci]\n nci_ntf_packet+0xddc/0x11a0 [nci]\n nci_rx_work+0x15c/0x1e0 [nci]\n process_one_work+0x2dc/0x500\n worker_thread+0x240/0x460\n kthread+0x1c0/0x1d0\n ret_from_fork+0x10/0x20\n\n The buggy address belongs to the cache kmalloc-2k of size 2048\n The buggy address is located 1024 bytes to the right of\n allocated 1560-byte region [ffff0000c7299000, ffff0000c7299618)\n\nGuard nci_target_auto_activated() with the same check used by\nnci_add_new_target().", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "0dc59de0075f88404a0f4a2b5233104ef459fbb2" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "94530ffabfca57e9bff1d207106010014cc84032" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "afd8605fb43becb892311102844955c3b127fc7e" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "24761d3a5f692df5f7d848caeabcb2afd10917aa" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "2f08dbce3b37624ec6b424d759336a99586170ec" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "d7083f41c21b30582e91b2e6de4d54dce74f6f9c" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "129032c0616d83a5e3e304f6ebf88f14ba01e5f7" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "status": "affected", "versionType": "git", "lessThan": "ac200079db50af81e6b04d058b33ec92901d8edd" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.4", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.4" }, { "version": "5.10.267", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.218", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.185", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.154", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.106", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.47", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.1.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.1.*" }, { "version": "7.2.1", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.2.*" }, { "version": "7.3", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }