{"api_version":"1","generated_at":"2026-09-06T09:35:49+00:00","cve":"CVE-2026-80795","urls":{"html":"https://cve.report/CVE-2026-80795","api":"https://cve.report/api/cve/CVE-2026-80795.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80795","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80795"},"summary":{"title":"nfc: nci: fix out-of-bounds write in nci_target_auto_activated()","description":"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().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:06","updated_at":"2026-09-04 16:18:06"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d7083f41c21b30582e91b2e6de4d54dce74f6f9c","name":"https://git.kernel.org/stable/c/d7083f41c21b30582e91b2e6de4d54dce74f6f9c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ac200079db50af81e6b04d058b33ec92901d8edd","name":"https://git.kernel.org/stable/c/ac200079db50af81e6b04d058b33ec92901d8edd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24761d3a5f692df5f7d848caeabcb2afd10917aa","name":"https://git.kernel.org/stable/c/24761d3a5f692df5f7d848caeabcb2afd10917aa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0dc59de0075f88404a0f4a2b5233104ef459fbb2","name":"https://git.kernel.org/stable/c/0dc59de0075f88404a0f4a2b5233104ef459fbb2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/94530ffabfca57e9bff1d207106010014cc84032","name":"https://git.kernel.org/stable/c/94530ffabfca57e9bff1d207106010014cc84032","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/afd8605fb43becb892311102844955c3b127fc7e","name":"https://git.kernel.org/stable/c/afd8605fb43becb892311102844955c3b127fc7e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/129032c0616d83a5e3e304f6ebf88f14ba01e5f7","name":"https://git.kernel.org/stable/c/129032c0616d83a5e3e304f6ebf88f14ba01e5f7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2f08dbce3b37624ec6b424d759336a99586170ec","name":"https://git.kernel.org/stable/c/2f08dbce3b37624ec6b424d759336a99586170ec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951","name":"https://git.kernel.org/stable/c/50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80795","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80795","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 0dc59de0075f88404a0f4a2b5233104ef459fbb2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 94530ffabfca57e9bff1d207106010014cc84032 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 afd8605fb43becb892311102844955c3b127fc7e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 24761d3a5f692df5f7d848caeabcb2afd10917aa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 2f08dbce3b37624ec6b424d759336a99586170ec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 d7083f41c21b30582e91b2e6de4d54dce74f6f9c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 129032c0616d83a5e3e304f6ebf88f14ba01e5f7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 ac200079db50af81e6b04d058b33ec92901d8edd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.267 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.218 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.185 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.154 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.106 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.47 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.11 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.1 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80795","cve":"CVE-2026-80795","epss":"0.001950000","percentile":"0.092720000","score_date":"2026-09-05","updated_at":"2026-09-06 00:04:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/nfc/nci/ntf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0dc59de0075f88404a0f4a2b5233104ef459fbb2","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"94530ffabfca57e9bff1d207106010014cc84032","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"afd8605fb43becb892311102844955c3b127fc7e","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"24761d3a5f692df5f7d848caeabcb2afd10917aa","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"2f08dbce3b37624ec6b424d759336a99586170ec","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"d7083f41c21b30582e91b2e6de4d54dce74f6f9c","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"129032c0616d83a5e3e304f6ebf88f14ba01e5f7","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"},{"lessThan":"ac200079db50af81e6b04d058b33ec92901d8edd","status":"affected","version":"019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/nfc/nci/ntf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.4"},{"lessThan":"3.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.267","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.218","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.185","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.154","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.106","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.47","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.11","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.1","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.267","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.218","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.185","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.154","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.106","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.47","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.11","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.1","versionStartIncluding":"3.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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()."}],"providerMetadata":{"dateUpdated":"2026-09-04T15:13:08.640Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0dc59de0075f88404a0f4a2b5233104ef459fbb2"},{"url":"https://git.kernel.org/stable/c/94530ffabfca57e9bff1d207106010014cc84032"},{"url":"https://git.kernel.org/stable/c/afd8605fb43becb892311102844955c3b127fc7e"},{"url":"https://git.kernel.org/stable/c/24761d3a5f692df5f7d848caeabcb2afd10917aa"},{"url":"https://git.kernel.org/stable/c/50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951"},{"url":"https://git.kernel.org/stable/c/2f08dbce3b37624ec6b424d759336a99586170ec"},{"url":"https://git.kernel.org/stable/c/d7083f41c21b30582e91b2e6de4d54dce74f6f9c"},{"url":"https://git.kernel.org/stable/c/129032c0616d83a5e3e304f6ebf88f14ba01e5f7"},{"url":"https://git.kernel.org/stable/c/ac200079db50af81e6b04d058b33ec92901d8edd"}],"title":"nfc: nci: fix out-of-bounds write in nci_target_auto_activated()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80795","datePublished":"2026-09-04T15:13:08.640Z","dateReserved":"2026-08-26T14:34:25.793Z","dateUpdated":"2026-09-04T15:13:08.640Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:06","lastModifiedDate":"2026-09-04 16:18:06","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80795","Ordinal":"1","Title":"nfc: nci: fix out-of-bounds write in nci_target_auto_activated()","CVE":"CVE-2026-80795","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80795","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"nfc: nci: fix out-of-bounds write in nci_target_auto_activated()"}]}}}