227 lines
11 KiB
JSON
227 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-2026-97964",
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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": "2026-09-25T10:18:58.206Z",
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"datePublished": "2026-09-25T10:23:07.350Z",
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"dateUpdated": "2026-10-19T09:11:30.152Z"
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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": "2026-10-19T09:11:30.152Z"
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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\nppp_synctty: ensure a writeable skb header\n\nppp_sync_txmunge() checks headroom before prepending the address and\ncontrol bytes, but does not ensure that the skb header is writable.\nA received skb can reach this function through PPP channel bridging\nwithout passing through ppp_start_xmit(), which calls skb_cow_head().\n\nFor example, a PPPoE frame may share its buffer with a clone queued to\nan AF_PACKET socket. If it is bridged to a synchronous tty channel, the\naddress/control bytes can overwrite data still visible to that socket.\n\nUse skb_cow_head() to ensure both sufficient headroom and a writable\nheader."
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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/ppp/ppp_synctty.c"
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],
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"versions": [
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{
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"version": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "25e03eeead2c49748c7582dfb64c205f93a42d00",
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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": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "a256f9925288ef47de8febed5c38d5cc21340211",
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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": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "7953946f68262a8bb137aa101249adef6e029652",
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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": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "3af7797fbabc84992e0ca5ad2bc0ca8537d053ef",
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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": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "0996c3e6bcc6ae08cb371ed43648c9f7f748ae6e",
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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": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "15d0a6c9a42df2d745c37510dba828f6dbe60d9f",
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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": "4cf476ced45d7f12df30a68e833b263e7a2202d1",
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"lessThan": "8aaeb56aff2a557a88f83ae866da2c91ad247e59",
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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/ppp/ppp_synctty.c"
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],
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"versions": [
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{
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"version": "5.11",
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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": "5.11",
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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": "5.15.222",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.189",
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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": "6.6.158",
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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": "6.12.111",
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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": "6.18.53",
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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": "7.2.7",
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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": "5.11",
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"versionEndExcluding": "5.15.222"
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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": "5.11",
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"versionEndExcluding": "6.1.189"
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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": "5.11",
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"versionEndExcluding": "6.6.158"
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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": "5.11",
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"versionEndExcluding": "6.12.111"
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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": "5.11",
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"versionEndExcluding": "6.18.53"
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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": "5.11",
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"versionEndExcluding": "7.2.7"
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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": "5.11",
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"versionEndExcluding": "7.3"
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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/25e03eeead2c49748c7582dfb64c205f93a42d00"
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},
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{
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"url": "https://git.kernel.org/stable/c/a256f9925288ef47de8febed5c38d5cc21340211"
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},
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{
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"url": "https://git.kernel.org/stable/c/7953946f68262a8bb137aa101249adef6e029652"
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},
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{
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"url": "https://git.kernel.org/stable/c/3af7797fbabc84992e0ca5ad2bc0ca8537d053ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/0996c3e6bcc6ae08cb371ed43648c9f7f748ae6e"
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},
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{
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"url": "https://git.kernel.org/stable/c/15d0a6c9a42df2d745c37510dba828f6dbe60d9f"
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},
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{
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"url": "https://git.kernel.org/stable/c/8aaeb56aff2a557a88f83ae866da2c91ad247e59"
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}
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],
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"title": "ppp_synctty: ensure a writeable skb header",
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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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} |