159 lines
8.9 KiB
JSON
159 lines
8.9 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-2026-31501",
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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": "2026-03-09T15:48:24.104Z",
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"datePublished": "2026-04-22T13:54:21.749Z",
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"dateUpdated": "2026-10-15T10:07:00.443Z"
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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": "2026-10-15T10:07:00.443Z"
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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: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path\n\ncppi5_hdesc_get_psdata() returns a pointer into the CPPI descriptor.\nIn both emac_rx_packet() and emac_rx_packet_zc(), the descriptor is\nfreed via k3_cppi_desc_pool_free() before the psdata pointer is used\nby emac_rx_timestamp(), which dereferences psdata[0] and psdata[1].\nThis constitutes a use-after-free on every received packet that goes\nthrough the timestamp path.\n\nDefer the descriptor free until after all accesses through the psdata\npointer are complete. For emac_rx_packet(), move the free into the\nrequeue label so both early-exit and success paths free the descriptor\nafter all accesses are done. For emac_rx_packet_zc(), move the free to\nthe end of the loop body after emac_dispatch_skb_zc() (which calls\nemac_rx_timestamp()) has returned."
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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 vulnerable code is in the Ethernet RX path and is reached by received network packets once RX hardware timestamping is enabled. In a reasonable PTP/industrial deployment, a remote network sender can trigger the timestamp path without local access.\nAC:L - The bug is not a race; the descriptor is freed before `psdata` is dereferenced on each timestamped RX packet. An attacker can reliably send packets to exercise the path.\nPR:N - The packet sender needs no privileges or authentication to reach the RX processing path. Enabling hardware timestamping requires CAP_NET_ADMIN, but that is a normal target configuration precondition rather than a privilege needed by the remote attacker.\nUI:N - No victim user action is required after the interface is running with RX timestamping enabled. Packet reception alone drives IRQ/NAPI processing into the vulnerable function.\nS:U - The impact remains within the same kernel/host security authority. This is not a VM escape, IOMMU bypass, or cross-scope boundary violation.\nC:H - This is a kernel use-after-free of a CPPI descriptor pointer used for RX metadata. Under the kernel scoring guidance, UAF of descriptor memory is treated as capable of exposing kernel or DMA-controlled memory state.\nI:H - Use-after-free in kernel RX descriptor lifetime is a memory-corruption class issue. Descriptor reuse and DMA interaction make high-integrity impact defensible under the required higher-severity scoring rule.\nA:H - Repeated network packets can repeatedly hit the freed-descriptor dereference in softirq/NAPI context. A kernel crash, RX path corruption, or device/network outage is a high availability impact."
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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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"drivers/net/ethernet/ti/icssg/icssg_common.c"
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],
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"versions": [
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{
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"version": "46eeb90f03e03d5e8f7f9f1f0eb0792104fc5f86",
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"lessThan": "c516c2e06fe580b8d38de60cd407072a5de81506",
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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": "46eeb90f03e03d5e8f7f9f1f0eb0792104fc5f86",
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"lessThan": "d5827316debcb677679bb014885d7be92c410e11",
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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": "46eeb90f03e03d5e8f7f9f1f0eb0792104fc5f86",
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"lessThan": "eb8c426c9803beb171f89d15fea17505eb517714",
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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/ethernet/ti/icssg/icssg_common.c"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "6.18.57",
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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": "6.19.11",
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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": "6.15",
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"versionEndExcluding": "6.18.57"
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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": "6.15",
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"versionEndExcluding": "6.19.11"
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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": "6.15",
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"versionEndExcluding": "7.0"
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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/c516c2e06fe580b8d38de60cd407072a5de81506"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5827316debcb677679bb014885d7be92c410e11"
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},
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{
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"url": "https://git.kernel.org/stable/c/eb8c426c9803beb171f89d15fea17505eb517714"
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}
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],
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"title": "net: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path",
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"x_generator": {
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