206 lines
10 KiB
JSON
206 lines
10 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-2026-97566",
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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": "2026-09-24T16:01:01.155Z",
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"datePublished": "2026-09-25T10:21:53.068Z",
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"dateUpdated": "2026-10-30T12:37:27.459Z"
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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": "2026-10-30T12:37:27.459Z"
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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\nmptcp: pm: kernel: drop pending ADD_ADDR when removing ID0\n\nThe in-kernel MPTCP path manager can leave a stale ADD_ADDR announcement\nentry alive when removing the id 0 endpoint. This happens because the id 0\nremoval path does not tear down pending announcements, unlike the non-zero\nid path.\n\nWhen the PM later reselects id 0 after adding another signal endpoint, it\nfinds the stale anno_list entry and hits WARN_ON_ONCE(mptcp_pm_is_kernel())\nin mptcp_pm_announced_alloc().\n\nRoot cause: asymmetry between removal paths.\n- Non-zero id path: mptcp_nl_remove_subflow_and_signal_addr() calls\n mptcp_pm_remove_announced() to clean up.\n- Id 0 path: mptcp_nl_remove_id_zero_address() skips cleanup entirely.\n\nFix by making the id 0 path symmetric: call mptcp_pm_announced_remove()\nand decrement add_addr_signaled before queuing the RM_ADDR.\n\nSubtle detail: signal endpoints are stored in anno_list with port 0, but\nmsk_local carries the connection's local port. In other words, entries\nlinked to ID0 paths should have port == 0. A follow-up patch will ensure\nthat. mptcp_pm_announced_remove() uses use_port=true for comparison. So\nclear the port before the lookup."
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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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"net/mptcp/pm_kernel.c"
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],
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"versions": [
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{
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"version": "740d798e8767d8a449902b1a1bbc70facfce19b5",
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"lessThan": "4af59a98aead422a152d805a89586dbb65616fc8",
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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": "740d798e8767d8a449902b1a1bbc70facfce19b5",
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"lessThan": "189d60057e5f3d6a62e3d71a3cc428c9150bc14f",
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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": "740d798e8767d8a449902b1a1bbc70facfce19b5",
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"lessThan": "bacf23e7c9876c9f4170166b3597cb22ea3ed39b",
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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": "740d798e8767d8a449902b1a1bbc70facfce19b5",
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"lessThan": "d4a67a880654e1bfe318a31bea0bdbb026a09ade",
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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": "740d798e8767d8a449902b1a1bbc70facfce19b5",
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"lessThan": "545616b4e7325be3c61fc082538cb06d14f7b1db",
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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": "740d798e8767d8a449902b1a1bbc70facfce19b5",
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"lessThan": "2ac7d6e620764f1fc79eb4edd3610a7a661981ca",
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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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"net/mptcp/pm_kernel.c"
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],
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"versions": [
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{
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"version": "5.13",
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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": "5.13",
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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": "6.6.160",
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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": "6.12.112",
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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": "5.13",
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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": "5.13",
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"versionEndExcluding": "6.6.160"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "6.12.112"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "6.18.53"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "7.2.7"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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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/4af59a98aead422a152d805a89586dbb65616fc8"
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},
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{
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"url": "https://git.kernel.org/stable/c/189d60057e5f3d6a62e3d71a3cc428c9150bc14f"
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},
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{
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"url": "https://git.kernel.org/stable/c/bacf23e7c9876c9f4170166b3597cb22ea3ed39b"
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},
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{
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"url": "https://git.kernel.org/stable/c/d4a67a880654e1bfe318a31bea0bdbb026a09ade"
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},
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{
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"url": "https://git.kernel.org/stable/c/545616b4e7325be3c61fc082538cb06d14f7b1db"
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},
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{
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"url": "https://git.kernel.org/stable/c/2ac7d6e620764f1fc79eb4edd3610a7a661981ca"
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}
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],
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"title": "mptcp: pm: kernel: drop pending ADD_ADDR when removing ID0",
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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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} |