194 lines
12 KiB
JSON
194 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-2024-42083",
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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": "2024-07-29T15:50:41.170Z",
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"datePublished": "2024-07-29T15:54:44.106Z",
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"dateUpdated": "2026-08-05T11:35:32.514Z"
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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": "2026-08-05T11:35:32.514Z"
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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\nionic: fix kernel panic due to multi-buffer handling\n\nCurrently, the ionic_run_xdp() doesn't handle multi-buffer packets\nproperly for XDP_TX and XDP_REDIRECT.\nWhen a jumbo frame is received, the ionic_run_xdp() first makes xdp\nframe with all necessary pages in the rx descriptor.\nAnd if the action is either XDP_TX or XDP_REDIRECT, it should unmap\ndma-mapping and reset page pointer to NULL for all pages, not only the\nfirst page.\nBut it doesn't for SG pages. So, SG pages unexpectedly will be reused.\nIt eventually causes kernel panic.\n\nOops: general protection fault, probably for non-canonical address 0x504f4e4dbebc64ff: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.10.0-rc3+ #25\nRIP: 0010:xdp_return_frame+0x42/0x90\nCode: 01 75 12 5b 4c 89 e6 5d 31 c9 41 5c 31 d2 41 5d e9 73 fd ff ff 44 8b 6b 20 0f b7 43 0a 49 81 ed 68 01 00 00 49 29 c5 49 01 fd <41> 80 7d0\nRSP: 0018:ffff99d00122ce08 EFLAGS: 00010202\nRAX: 0000000000005453 RBX: ffff8d325f904000 RCX: 0000000000000001\nRDX: 00000000670e1000 RSI: 000000011f90d000 RDI: 504f4e4d4c4b4a49\nRBP: ffff99d003907740 R08: 0000000000000000 R09: 0000000000000000\nR10: 000000011f90d000 R11: 0000000000000000 R12: ffff8d325f904010\nR13: 504f4e4dbebc64fd R14: ffff8d3242b070c8 R15: ffff99d0039077c0\nFS: 0000000000000000(0000) GS:ffff8d399f780000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f41f6c85e38 CR3: 000000037ac30000 CR4: 00000000007506f0\nPKRU: 55555554\nCall Trace:\n <IRQ>\n ? die_addr+0x33/0x90\n ? exc_general_protection+0x251/0x2f0\n ? asm_exc_general_protection+0x22/0x30\n ? xdp_return_frame+0x42/0x90\n ionic_tx_clean+0x211/0x280 [ionic 15881354510e6a9c655c59c54812b319ed2cd015]\n ionic_tx_cq_service+0xd3/0x210 [ionic 15881354510e6a9c655c59c54812b319ed2cd015]\n ionic_txrx_napi+0x41/0x1b0 [ionic 15881354510e6a9c655c59c54812b319ed2cd015]\n __napi_poll.constprop.0+0x29/0x1b0\n net_rx_action+0x2c4/0x350\n handle_softirqs+0xf4/0x320\n irq_exit_rcu+0x78/0xa0\n common_interrupt+0x77/0x90"
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:A - The bug is triggered purely by a received Ethernet frame, but only by a jumbo frame larger than ~3520 bytes, since `ionic_rx_fill()` posts SG buffers only when `netdev->mtu + VLAN_ETH_HLEN` exceeds `IONIC_XDP_MAX_LINEAR_MTU` and ionic supports no LRO/RSC coalescing. Delivering such a frame requires being on the same L2 segment or a jumbo-MTU datacenter fabric, which is CVSS's \"logically adjacent topology / limited administrative domain\".\nAC:L - There is no race and no memory-layout guessing: every jumbo frame that an XDP frags program resolves to XDP_TX or XDP_REDIRECT leaves the SG pages doubly owned, deterministically, and the attacker chooses the frame size and payload. Repeating the send reliably drives the RX ring to re-post and then free the still-live pages.\nPR:N - The attacker only needs to put raw Ethernet frames on the link — no account, no authentication, and no prior interaction with the host. The XDP program is attached by the system's own administrator and is part of the vulnerable configuration, not a privilege the attacker must hold.\nUI:N - The corruption happens in the NAPI receive path in softirq context with no local user involved. No victim action is required beyond the host running normally with XDP enabled.\nS:U - The corrupted pages, freed objects, and hijacked pointers all live within the host kernel's own memory and security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - Freed and re-posted pages remain DMA-mapped and are handed to `xdp_do_redirect()`/`ionic_xdp_post_frame()` and later rebuilt into skbs, so contents of freed kernel pages — potentially reallocated to unrelated kernel or user data — are transmitted out of the NIC or delivered up the stack. The use-after-free additionally gives the attacker the standard heap-groom read primitive.\nI:H - This is a use-after-free plus double-free where the device keeps DMA-writing attacker-chosen packet bytes into pages the allocator has handed to other owners. The oops proves attacker payload (\"IJKLMNOP\") is consumed as a `struct page *` inside `__xdp_return()`, yielding an attacker-influenced free/refcount-decrement on an arbitrary address — a control-flow-hijack-grade write primitive.\nA:H - The commit documents a reproducible general protection fault in `xdp_return_frame()` from softirq context, panicking the machine. The attacker can repeat the triggering jumbo frames at will."
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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/pensando/ionic/ionic_txrx.c"
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],
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"versions": [
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{
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"drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
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],
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"version": "6.9",
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"version": "0",
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"lessThan": "6.9",
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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": "6.9.8",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"version": "6.10",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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{
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