{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80795", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.793Z", "datePublished": "2026-09-04T15:13:08.640Z", "dateUpdated": "2026-10-19T08:43:48.491Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:48.491Z" }, "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()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/nfc/nci/ntf.c" ], "versions": [ { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "0dc59de0075f88404a0f4a2b5233104ef459fbb2", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "94530ffabfca57e9bff1d207106010014cc84032", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "afd8605fb43becb892311102844955c3b127fc7e", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "24761d3a5f692df5f7d848caeabcb2afd10917aa", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "2f08dbce3b37624ec6b424d759336a99586170ec", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "d7083f41c21b30582e91b2e6de4d54dce74f6f9c", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "129032c0616d83a5e3e304f6ebf88f14ba01e5f7", "status": "affected", "versionType": "git" }, { "version": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5", "lessThan": "ac200079db50af81e6b04d058b33ec92901d8edd", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/nfc/nci/ntf.c" ], "versions": [ { "version": "3.4", "status": "affected" }, { "version": "0", "lessThan": "3.4", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.267", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.218", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.185", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.154", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.106", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.1", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "3.4", "versionEndExcluding": "5.10.267" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "5.15.218" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.1.185" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.6.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.12.106" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "6.18.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "7.1.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "7.2.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4", "versionEndExcluding": "7.3" } ] } ] } ], "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" } } } }