270 lines
12 KiB
JSON
270 lines
12 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-2026-23247",
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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": "2026-01-13T15:37:45.989Z",
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"datePublished": "2026-03-18T10:05:09.353Z",
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"dateUpdated": "2026-11-05T21:33:32.445Z"
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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": "2026-10-30T12:23:52.715Z"
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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\ntcp: secure_seq: add back ports to TS offset\n\nThis reverts 28ee1b746f49 (\"secure_seq: downgrade to per-host timestamp offsets\")\n\ntcp_tw_recycle went away in 2017.\n\nZhouyan Deng reported off-path TCP source port leakage via\nSYN cookie side-channel that can be fixed in multiple ways.\n\nOne of them is to bring back TCP ports in TS offset randomization.\n\nAs a bonus, we perform a single siphash() computation\nto provide both an ISN and a TS offset."
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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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"include/net/secure_seq.h",
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"include/net/tcp.h",
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"net/core/secure_seq.c",
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"net/ipv4/syncookies.c",
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"net/ipv4/tcp_input.c",
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"net/ipv4/tcp_ipv4.c",
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"net/ipv6/syncookies.c",
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"net/ipv6/tcp_ipv6.c"
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],
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"versions": [
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{
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"version": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
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"lessThan": "025f532d8c5cfac77845e50daab7f478b360f2ac",
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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": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
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"lessThan": "e873e8c16b2fb743a381a9e59c108e63512301ec",
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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": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
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"lessThan": "5da5662181ef8a251e3ba564903002c2e87de452",
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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": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
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"lessThan": "eae2f14ab2efccdb7480fae7d42c4b0116ef8805",
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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": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
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"lessThan": "46e5b0d7cf55821527adea471ffe52a5afbd9caf",
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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": "28ee1b746f493b7c62347d714f58fbf4f70df4f0",
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"lessThan": "165573e41f2f66ef98940cf65f838b2cb575d9d1",
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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": "443fac9f2618b93cbc5ab068dc594530236b3a23",
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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": "4.10.14",
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"lessThan": "4.11",
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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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"include/net/secure_seq.h",
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"include/net/tcp.h",
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"net/core/secure_seq.c",
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"net/ipv4/syncookies.c",
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"net/ipv4/tcp_input.c",
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"net/ipv4/tcp_ipv4.c",
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"net/ipv6/syncookies.c",
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"net/ipv6/tcp_ipv6.c"
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],
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"versions": [
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{
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"version": "4.11",
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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": "4.11",
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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": "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": "6.6.160",
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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": "6.12.94",
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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": "6.18.17",
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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": "6.19.7",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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": "4.11",
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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": "4.11",
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"versionEndExcluding": "6.6.160"
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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": "4.11",
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"versionEndExcluding": "6.12.94"
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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": "4.11",
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"versionEndExcluding": "6.18.17"
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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": "4.11",
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"versionEndExcluding": "6.19.7"
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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": "4.11",
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"versionEndExcluding": "7.0"
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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": "4.10.14"
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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/025f532d8c5cfac77845e50daab7f478b360f2ac"
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},
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{
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"url": "https://git.kernel.org/stable/c/e873e8c16b2fb743a381a9e59c108e63512301ec"
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},
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{
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"url": "https://git.kernel.org/stable/c/5da5662181ef8a251e3ba564903002c2e87de452"
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},
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{
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"url": "https://git.kernel.org/stable/c/eae2f14ab2efccdb7480fae7d42c4b0116ef8805"
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},
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{
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"url": "https://git.kernel.org/stable/c/46e5b0d7cf55821527adea471ffe52a5afbd9caf"
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},
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{
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"url": "https://git.kernel.org/stable/c/165573e41f2f66ef98940cf65f838b2cb575d9d1"
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}
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],
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"title": "tcp: secure_seq: add back ports to TS offset",
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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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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-23247",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-05T21:23:07.659265Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-05T21:33:32.445Z"
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}
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}
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]
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}
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} |