222 lines
11 KiB
JSON
222 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-99192",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.400Z",
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"datePublished": "2026-10-28T10:35:48.686Z",
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"dateUpdated": "2026-10-30T12:42:50.060Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:42:50.060Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: unshare the skb before writing the control block\n\nbcmgenet stores first_cb, last_cb and bytes_sent in the skb control\nblock and reads them back on completion to free the skb and credit BQL.\nether_setup() leaves IFF_TX_SKB_SHARING set, so the stack can resubmit\na shared skb that is still in the ring. The next transmit overwrites\nlast_cb, so the earlier slots complete without crediting their bytes\nand BQL stalls the queue until the watchdog resets it.\n\nUnshare the skb before writing the control block.\n\nReproduce with pktgen in clone_skb mode, which hands the driver the same\nskb while earlier copies are still in the ring:\n\n modprobe pktgen\n pg=/proc/net/pktgen\n echo \"add_device eth0\" > $pg/kpktgend_0\n echo \"dst_mac AA:BB:CC:DD:EE:FF\" > $pg/eth0\n echo \"dst 192.0.2.1\" > $pg/eth0\n echo \"clone_skb 8\" > $pg/eth0\n echo \"count 0\" > $pg/eth0\n echo start > $pg/pgctrl &\n sleep 5\n echo stop > $pg/pgctrl\n wait\n cat /sys/class/net/eth0/queues/tx-0/byte_queue_limits/inflight\n\ninflight stays nonzero on the now idle queue. clone_skb 0 leaves it at\nzero."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/broadcom/genet/bcmgenet.c"
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],
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"versions": [
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{
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"version": "f48bed16a756f5bc0244acd581f61968f7d7c2a4",
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"lessThan": "c13d43c92bc89f494592a60e624a7c0c42218d36",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f48bed16a756f5bc0244acd581f61968f7d7c2a4",
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"lessThan": "e5aa07c62e4fda1206d314c9ea36d67cd6b95cad",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f48bed16a756f5bc0244acd581f61968f7d7c2a4",
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"lessThan": "2e5fb9dd3aca0da534793ad8123b81deff396efe",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f48bed16a756f5bc0244acd581f61968f7d7c2a4",
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"lessThan": "40c04abcbc34e3afe338f41dae851ecbd72852ac",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f48bed16a756f5bc0244acd581f61968f7d7c2a4",
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"lessThan": "7939ad3b4db9eadf45a64f0524f38337a9494672",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f48bed16a756f5bc0244acd581f61968f7d7c2a4",
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"lessThan": "89771ce4f8f67dcffae561b2ccac95c0f6e3aa01",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fb4ca2b4bc6712a6ad635df5b9b41131846589f9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "3.16.50",
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"lessThan": "3.17",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/broadcom/genet/bcmgenet.c"
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],
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"versions": [
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{
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"version": "4.13",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.13",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.161",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.115",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.59",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.13",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.13",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.13",
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"versionEndExcluding": "6.6.161"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.13",
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"versionEndExcluding": "6.12.115"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.13",
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"versionEndExcluding": "6.18.59"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.13",
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"versionEndExcluding": "7.2.13"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.13",
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"versionEndExcluding": "7.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.16.50"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/c13d43c92bc89f494592a60e624a7c0c42218d36"
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},
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{
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"url": "https://git.kernel.org/stable/c/e5aa07c62e4fda1206d314c9ea36d67cd6b95cad"
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},
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{
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"url": "https://git.kernel.org/stable/c/2e5fb9dd3aca0da534793ad8123b81deff396efe"
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},
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{
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"url": "https://git.kernel.org/stable/c/40c04abcbc34e3afe338f41dae851ecbd72852ac"
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},
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{
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"url": "https://git.kernel.org/stable/c/7939ad3b4db9eadf45a64f0524f38337a9494672"
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},
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{
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"url": "https://git.kernel.org/stable/c/89771ce4f8f67dcffae561b2ccac95c0f6e3aa01"
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}
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],
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"title": "net: bcmgenet: unshare the skb before writing the control block",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |