{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-43113", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.986Z", "datePublished": "2026-05-06T07:40:39.234Z", "dateUpdated": "2026-08-05T12:26:00.700Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:26:00.700Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wl1251: validate packet IDs before indexing tx_frames\n\nwl1251_tx_packet_cb() uses the firmware completion ID directly to index\nthe fixed 16-entry wl->tx_frames[] array. The ID is a raw u8 from the\ncompletion block, and the callback does not currently verify that it\nfits the array before dereferencing it.\n\nReject completion IDs that fall outside wl->tx_frames[] and keep the\nexisting NULL check in the same guard. This keeps the fix local to the\ntrust boundary and avoids touching the rest of the completion flow." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The vulnerable completion path belongs to a Wi-Fi driver and is reached through wl1251 transmit-completion processing after wireless activity. The highest defensible scenario is a radio-adjacent attacker influencing firmware TX results on the local Wi-Fi medium.\nAC:L - There is no race or hard timing requirement in the vulnerable callback. Once the TX-result path is reached, one completion record with an out-of-range u8 packet ID is enough to trigger the out-of-bounds access.\nPR:N - The TX completion interrupt path performs no attacker credential or authorization check before trusting the firmware completion ring. A radio-adjacent attacker does not need an account or local privileges on the victim.\nUI:N - Completion records are processed automatically by the driver when the device raises a TX-result interrupt. Exploitation does not require the victim to open a file, mount anything, or perform a deliberate action.\nS:U - The vulnerable component is a kernel Wi-Fi driver and the impacts are to the same kernel security authority. This is not a VM escape, IOMMU bypass, or cross-authority boundary crossing.\nC:H - The unchecked u8 index can read a pointer outside the fixed 16-entry tx_frames array and then treat that memory as an skb. As kernel memory corruption, this is defensibly scoreable as high confidentiality impact.\nI:H - The old code can write NULL back through wl->tx_frames[result->id] out of bounds and can also mutate fields through a bogus skb pointer. That is kernel memory corruption with potential control-flow or data-integrity impact.\nA:H - An out-of-bounds pointer dereference or write in this kernel path can readily cause an oops, panic, or device/driver failure. Availability impact is therefore high." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ti/wl1251/tx.c" ], "versions": [ { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "6509dbece7339dbc8980c706b9d623119a6de105", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "a8a11a876f0a97061ee5d9e61d0f5a0df7e241c7", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "e0dc1ad870d6788b049bfe1511ac75b2333a7550", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "b6ba1eacf276063ebeefbbae8056043c24f2efaf", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "df15adc692a802636dd3f258fc7cca8bf7a0ed9a", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "8d7465be5163a923ee5d7459719ef5a021c1584a", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "26ee518695c484f75e3606d631278e84bd24ae02", "status": "affected", "versionType": "git" }, { "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "0fd56fad9c56356e7fa7a7c52e7ecbf807a44eb0", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ti/wl1251/tx.c" ], "versions": [ { "version": "2.6.31", "status": "affected" }, { "version": "0", "lessThan": "2.6.31", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "2.6.31", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.6.136" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.12.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.18.24" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.19.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/6509dbece7339dbc8980c706b9d623119a6de105" }, { "url": "https://git.kernel.org/stable/c/a8a11a876f0a97061ee5d9e61d0f5a0df7e241c7" }, { "url": "https://git.kernel.org/stable/c/e0dc1ad870d6788b049bfe1511ac75b2333a7550" }, { "url": "https://git.kernel.org/stable/c/b6ba1eacf276063ebeefbbae8056043c24f2efaf" }, { "url": "https://git.kernel.org/stable/c/df15adc692a802636dd3f258fc7cca8bf7a0ed9a" }, { "url": "https://git.kernel.org/stable/c/8d7465be5163a923ee5d7459719ef5a021c1584a" }, { "url": "https://git.kernel.org/stable/c/26ee518695c484f75e3606d631278e84bd24ae02" }, { "url": "https://git.kernel.org/stable/c/0fd56fad9c56356e7fa7a7c52e7ecbf807a44eb0" } ], "title": "wifi: wl1251: validate packet IDs before indexing tx_frames", "x_generator": { "engine": "bippy-1.2.0" } } } }