156 lines
7.9 KiB
JSON
156 lines
7.9 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-2024-44976",
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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": "2024-08-21T05:34:56.669Z",
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"datePublished": "2024-09-04T19:54:28.282Z",
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"dateUpdated": "2026-05-11T20:33:03.774Z"
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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": "2026-05-11T20:33:03.774Z"
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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\nata: pata_macio: Fix DMA table overflow\n\nKolbjørn and Jonáš reported that their 32-bit PowerMacs were crashing\nin pata-macio since commit 09fe2bfa6b83 (\"ata: pata_macio: Fix\nmax_segment_size with PAGE_SIZE == 64K\").\n\nFor example:\n\n kernel BUG at drivers/ata/pata_macio.c:544!\n Oops: Exception in kernel mode, sig: 5 [#1]\n BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 DEBUG_PAGEALLOC PowerMac\n ...\n NIP pata_macio_qc_prep+0xf4/0x190\n LR pata_macio_qc_prep+0xfc/0x190\n Call Trace:\n 0xc1421660 (unreliable)\n ata_qc_issue+0x14c/0x2d4\n __ata_scsi_queuecmd+0x200/0x53c\n ata_scsi_queuecmd+0x50/0xe0\n scsi_queue_rq+0x788/0xb1c\n __blk_mq_issue_directly+0x58/0xf4\n blk_mq_plug_issue_direct+0x8c/0x1b4\n blk_mq_flush_plug_list.part.0+0x584/0x5e0\n __blk_flush_plug+0xf8/0x194\n __submit_bio+0x1b8/0x2e0\n submit_bio_noacct_nocheck+0x230/0x304\n btrfs_work_helper+0x200/0x338\n process_one_work+0x1a8/0x338\n worker_thread+0x364/0x4c0\n kthread+0x100/0x104\n start_kernel_thread+0x10/0x14\n\nThat commit increased max_segment_size to 64KB, with the justification\nthat the SCSI core was already using that size when PAGE_SIZE == 64KB,\nand that there was existing logic to split over-sized requests.\n\nHowever with a sufficiently large request, the splitting logic causes\neach sg to be split into two commands in the DMA table, leading to\noverflow of the DMA table, triggering the BUG_ON().\n\nWith default settings the bug doesn't trigger, because the request size\nis limited by max_sectors_kb == 1280, however max_sectors_kb can be\nincreased, and apparently some distros do that by default using udev\nrules.\n\nFix the bug for 4KB kernels by reverting to the old max_segment_size.\n\nFor 64KB kernels the sg_tablesize needs to be halved, to allow for the\npossibility that each sg will be split into two."
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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/ata/pata_macio.c"
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],
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"versions": [
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{
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"version": "09fe2bfa6b83f865126ce3964744863f69a4a030",
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"lessThan": "709e4c8f78e156ab332297bdd87527ec3da4e2d4",
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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": "09fe2bfa6b83f865126ce3964744863f69a4a030",
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"lessThan": "822c8020aebcf5804a143b891e34f29873fee5e2",
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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/ata/pata_macio.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.10.7",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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": "6.10",
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"versionEndExcluding": "6.10.7"
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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": "6.10",
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"versionEndExcluding": "6.11"
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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/709e4c8f78e156ab332297bdd87527ec3da4e2d4"
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},
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{
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"url": "https://git.kernel.org/stable/c/822c8020aebcf5804a143b891e34f29873fee5e2"
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}
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],
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"title": "ata: pata_macio: Fix DMA table overflow",
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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-2024-44976",
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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": "2024-09-10T15:24:17.288703Z"
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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": "2024-09-12T17:33:14.799Z"
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}
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}
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]
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}
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} |