298 lines
15 KiB
JSON
298 lines
15 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-2026-72297",
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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": "2026-08-09T03:40:39.917Z",
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"datePublished": "2026-08-15T05:55:17.877Z",
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"dateUpdated": "2026-10-16T18:55:15.534Z"
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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": "2026-08-17T05:42:30.264Z"
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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: atm: reject out-of-range traffic classes in QoS validation\n\nReject ATM traffic classes above ATM_ANYCLASS in check_tp().\nSO_ATMQOS stores the supplied QoS after check_qos() succeeds, so\naccepting larger values leaves invalid traffic_class values in\nvcc->qos.\n\nThat bad state later reaches pvc_info(), which indexes class_name[]\nwith vcc->qos.{rx,tp}.traffic_class. Values above ATM_ANYCLASS cause\nan out-of-bounds read when /proc/net/atm/pvc is read.\n\nTighten the existing QoS validation so invalid traffic_class values\nare rejected at the point where user supplied QoS is accepted."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - Exploitation requires local setsockopt(SO_ATMQOS) on an AF_ATMPVC socket and reading /proc/net/atm/pvc; no remote network packet or protocol handler reaches check_tp() or pvc_info().\nAC:L - On systems with an existing ATM PVC device, an attacker deterministically sets an out-of-range traffic_class via SO_ATMQOS before connect and triggers the OOB read by reading /proc/net/atm/pvc with no race or special memory layout needed.\nPR:L - No capability check guards SO_ATMQOS on unconnected sockets; any unprivileged local user in init_net can create AF_ATMPVC sockets (module autoloadable) and read world-readable /proc/net/atm/pvc without CAP_NET_ADMIN.\nUI:N - The attacker controls both poisoning vcc->qos via setsockopt and triggering pvc_info() by reading procfs; no victim action or cooperation is required.\nS:U - Impact is kernel memory disclosure within the host kernel security boundary; no VM escape, IOMMU bypass, or sandbox boundary crossing occurs.\nC:H - Out-of-bounds indexing of class_name[] loads adjacent kernel pointers that seq_printf() dereferences with %s, disclosing kernel memory contents into the procfs read buffer visible to the attacker.\nI:N - The flaw is an out-of-bounds read of static pointer tables with no memory corruption, arbitrary write, or control-flow hijack primitive; kernel or user data integrity is not modified.\nA:H - Dereferencing attacker-influenced out-of-bounds pointers via %s can fault on unmappable addresses and oops the kernel; even without reliable crash, OOB kernel reads carry high availability risk per conservative scoring."
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}
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]
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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/atm/common.c"
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],
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"versions": [
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "1a6dda72455b399ce9c1a12695471dc4d5c61add",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "2b3e241729e87afed13ac0f666472d5d6ca42e87",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "367acd288bc6255e247cb1a1efbf5c6567cab423",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "513f820b3f0cf4462e17d84c39ed3948d061a6ea",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "15444b57fdc6fc3f3e22a87f791ae5be81e6ecf5",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "e62adb157c2eaad9ad4867ec6cd9af5b9a51b1c7",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "806b7b6edc8446e8b94b706807a7090a14d47b5c",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "cdf19f380e46192e7084be559638aab1f6ed86a2",
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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/atm/common.c"
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],
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"versions": [
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{
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"version": "2.6.12",
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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": "2.6.12",
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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": "5.10.261",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.212",
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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": "6.1.178",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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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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{
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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": "2.6.12",
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"versionEndExcluding": "5.10.261"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1a6dda72455b399ce9c1a12695471dc4d5c61add"
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},
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{
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"url": "https://git.kernel.org/stable/c/2b3e241729e87afed13ac0f666472d5d6ca42e87"
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},
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{
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"url": "https://git.kernel.org/stable/c/367acd288bc6255e247cb1a1efbf5c6567cab423"
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},
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{
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"url": "https://git.kernel.org/stable/c/513f820b3f0cf4462e17d84c39ed3948d061a6ea"
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},
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{
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"url": "https://git.kernel.org/stable/c/15444b57fdc6fc3f3e22a87f791ae5be81e6ecf5"
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},
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{
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"url": "https://git.kernel.org/stable/c/e62adb157c2eaad9ad4867ec6cd9af5b9a51b1c7"
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},
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{
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"url": "https://git.kernel.org/stable/c/806b7b6edc8446e8b94b706807a7090a14d47b5c"
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},
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{
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"url": "https://git.kernel.org/stable/c/cdf19f380e46192e7084be559638aab1f6ed86a2"
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}
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],
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"title": "net: atm: reject out-of-range traffic classes in QoS validation",
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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-2026-72297",
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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": "2026-10-16T18:45:57.327476Z"
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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": "2026-10-16T18:55:15.534Z"
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}
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}
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]
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}
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} |