143 lines
6.9 KiB
JSON
143 lines
6.9 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-2026-68122",
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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": "2026-07-30T09:28:09.369Z",
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"datePublished": "2026-08-10T11:58:42.477Z",
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"dateUpdated": "2026-08-17T04:59:13.088Z"
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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": "2026-08-17T04:59:13.088Z"
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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\novpn: fix peer refcount leak in TCP error paths\n\nWhen either the TCP RX or TX error path calls ovpn_peer_hold() followed\nby schedule_work(&peer->tcp.defer_del_work), and the work item is already\npending from the other path, schedule_work() returns false and the work\nruns only once. Since ovpn_tcp_peer_del_work() calls ovpn_peer_put()\nexactly once, the extra reference taken by the losing path is never\ndropped, leaking the peer object.\n\nThe race window:\n\n CPU0 (strparser/RX error): CPU1 (tcp_tx_work/TX error):\n ovpn_peer_hold() <- refcnt+1 ovpn_peer_hold() <- refcnt+2\n schedule_work() <- queued schedule_work() <- NO-OP\n (work already pending)\n ovpn_tcp_peer_del_work runs:\n ovpn_peer_del()\n ovpn_peer_put() <- refcnt+1\n <- peer never freed\n\nFix by checking the return value of schedule_work() in both paths and\ncalling ovpn_peer_put() to drop the extra reference if the work was\nalready pending. ovpn_peer_hold() is kept unconditional in the TX path\nas it cannot fail at that point."
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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/ovpn/tcp.c"
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],
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"versions": [
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{
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"version": "a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb",
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"lessThan": "b08526bf0bbf84ceebd29033783e8e0c9f451286",
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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": "a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb",
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"lessThan": "f08f39c1f43f3980d46b06af8ed99ffe84ac294a",
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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": "a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb",
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"lessThan": "63bbe18fc03062f483c627838a566a707b62da79",
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"status": "affected",
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"versionType": "git"
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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/ovpn/tcp.c"
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],
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"versions": [
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{
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"version": "6.16",
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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": "6.16",
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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": "6.18.42",
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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": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"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": "6.16",
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"versionEndExcluding": "6.18.42"
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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": "6.16",
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"versionEndExcluding": "7.1.6"
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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": "6.16",
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"versionEndExcluding": "7.2"
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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/b08526bf0bbf84ceebd29033783e8e0c9f451286"
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},
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{
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"url": "https://git.kernel.org/stable/c/f08f39c1f43f3980d46b06af8ed99ffe84ac294a"
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},
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{
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"url": "https://git.kernel.org/stable/c/63bbe18fc03062f483c627838a566a707b62da79"
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}
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],
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"title": "ovpn: fix peer refcount leak in TCP error paths",
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"x_generator": {
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