260 lines
14 KiB
JSON
260 lines
14 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-2024-49568",
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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": "2025-01-11T12:34:02.664Z",
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"datePublished": "2025-01-11T12:35:36.190Z",
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"dateUpdated": "2026-10-15T21:41:45.403Z"
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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": "2026-10-03T10:55:19.630Z"
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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/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg\n\nWhen receiving proposal msg in server, the fields v2_ext_offset/\neid_cnt/ism_gid_cnt in proposal msg are from the remote client\nand can not be fully trusted. Especially the field v2_ext_offset,\nonce exceed the max value, there has the chance to access wrong\naddress, and crash may happen.\n\nThis patch checks the fields v2_ext_offset/eid_cnt/ism_gid_cnt\nbefore using them."
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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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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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:N - The malformed CLC proposal arrives as ordinary TCP payload from a remote peer on an SMC-enabled listening socket and is parsed by `smc_listen_work()`/`smc_clc_wait_msg()`. No local access or network adjacency is needed — any host that can reach the listener can trigger it.\nAC:L - The attacker controls every field involved (`version`, `typev1`, `typev2`, `iparea_offset`, `v2_ext_offset`) and an 8-byte payload deterministically produces the NULL dereference; the wild-pointer variant needs only a chosen 16-bit offset. No race, no memory-layout precondition, no state outside the attacker's control.\nPR:N - The CLC handshake runs immediately after the TCP three-way handshake, entirely before any application-level authentication, and `smc_clc_msg_prop_valid()` is the first validation performed on the peer's data. An unauthenticated remote attacker reaches it.\nUI:N - The kernel's listen worker parses the proposal automatically on connection accept; no local user or administrator action is required.\nS:U - The wild-pointer reads, writes and crash all occur within the kernel's own security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - `v2_ext_offset` up to 65535 (vs. a legitimate max of 172) points the parser up to ~64 KB past a ~676-byte slab object, and the OOB-read `smcd_v2_ext_offset` extends that another 64 KB; `smc_clc_match_eid()` scans up to 8 KB of it and the OOB-read `max_conns`/`max_links` are negotiated and reflected back to the attacker. This is a wide, attacker-directed kernel memory read, not a bounded few-byte leak.\nI:H - Removing the `ism_gid_cnt` bound lets `smc_check_ism_v2_match()` write attacker-supplied 64-bit GIDs, `smcd_dev` pointers and CHIDs past the 9-element `ism_peer_gid`/`ism_dev`/`ism_chid` arrays in the kzalloc'd `struct smc_init_info` on hosts with ≥10 SMC-D devices, and uncontrolled OOB-read bytes (`roce[]`, `system_eid`, GIDs) are installed as the link group's RDMA/ISM connection parameters.\nA:H - An 8-byte packet yields a guaranteed NULL-pointer oops in the `smc_hs_wq` worker while `lock_sock()` is held (full panic under `panic_on_oops`), and the wild-pointer faults occur while holding the global `smc_server_lgr_pending` mutex, permanently deadlocking every subsequent SMC server handshake. It is repeatable at will from an unauthenticated connection."
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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/smc/af_smc.c",
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"net/smc/smc_clc.c",
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"net/smc/smc_clc.h"
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],
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"versions": [
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{
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"version": "8c3dca341aea885249e08856c4380300b75d2cf5",
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"lessThan": "9cc0170ae646876aa5de2f0cad3066ce53e86f27",
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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": "8c3dca341aea885249e08856c4380300b75d2cf5",
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"lessThan": "49798283fce4c1a24fb1ba4c7c39127739535571",
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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": "8c3dca341aea885249e08856c4380300b75d2cf5",
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"lessThan": "690b9a8db9460d065785548e43fd6a02d247c1b7",
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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": "8c3dca341aea885249e08856c4380300b75d2cf5",
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"lessThan": "295a92e3df32e72aff0f4bc25c310e349d07ffbf",
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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": "8c3dca341aea885249e08856c4380300b75d2cf5",
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"lessThan": "42f6beb2d5779429417b5f8115a4e3fa695d2a6c",
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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": "8c3dca341aea885249e08856c4380300b75d2cf5",
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"lessThan": "7863c9f3d24ba49dbead7e03dfbe40deb5888fdf",
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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/smc/af_smc.c",
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"net/smc/smc_clc.c",
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"net/smc/smc_clc.h"
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],
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"versions": [
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{
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"version": "5.10",
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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": "5.10",
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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": "5.10.271",
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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": "5.15.222",
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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": "6.6.68",
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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": "6.12.7",
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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": "6.13",
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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": "5.10",
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"versionEndExcluding": "5.10.271"
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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": "5.10",
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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": "5.10",
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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": "5.10",
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"versionEndExcluding": "6.6.68"
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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": "5.10",
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"versionEndExcluding": "6.12.7"
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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": "5.10",
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"versionEndExcluding": "6.13"
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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/9cc0170ae646876aa5de2f0cad3066ce53e86f27"
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},
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{
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"url": "https://git.kernel.org/stable/c/49798283fce4c1a24fb1ba4c7c39127739535571"
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},
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{
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"url": "https://git.kernel.org/stable/c/690b9a8db9460d065785548e43fd6a02d247c1b7"
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},
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{
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"url": "https://git.kernel.org/stable/c/295a92e3df32e72aff0f4bc25c310e349d07ffbf"
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},
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{
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"url": "https://git.kernel.org/stable/c/42f6beb2d5779429417b5f8115a4e3fa695d2a6c"
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},
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{
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"url": "https://git.kernel.org/stable/c/7863c9f3d24ba49dbead7e03dfbe40deb5888fdf"
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}
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],
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"title": "net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg",
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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-2024-49568",
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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": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:40:30.354389Z"
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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": "2026-10-15T21:41:45.403Z"
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}
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}
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]
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}
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} |