255 lines
13 KiB
JSON
255 lines
13 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-2026-99285",
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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": "2026-09-25T10:25:14.405Z",
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"datePublished": "2026-11-10T17:37:13.348Z",
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"dateUpdated": "2026-11-10T17:37:13.348Z"
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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": "2026-11-10T17:37:13.348Z"
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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\nnetfilter: nft_byteorder: remove multi-register support\n\n64bit byteorder conversion is broken when several registers need to be\nconverted because the source register array advances in steps for 4 bytes\ninstead of 8:\n\n for (i = ...\n src64 = nft_reg_load64(&src[i]);\n ~~~~~ u32 *src\n nft_reg_store64(&dst64[i],\n\nRemove the multi-register support, it has other issues as well:\n\nPablo points out that commit\ncaf3ef7468f7 (\"netfilter: nf_tables: prevent OOB access in nft_byteorder_eval\")\nalters semantics: before the loop operated on registers, i.e.\n for ( ... )\n dst32[i] = htons((u16)src32[i])\n\n .. but after the patch it will operate on bytes, which makes this\n useless to convert e.g. concatenations, which store each compound\n in its own register.\n\nMulti-convert of u32 has one theoretical application:\n\nct mark . meta mark . tcp dport @intervalset\n\nBecause ct mark and meta mark are host byte order, use with\nintervals has to convert the byteorder for ct/meta mark value\nto network byte order (bigendian).\n\nnftables emits this:\n [ meta load mark => reg 1 ]\n [ byteorder reg 1 = hton(reg 1, 4, 4) ]\n [ ct load mark => reg 9 ]\n [ byteorder reg 9 = hton(reg 9, 4, 4) ]\n ...\n\nI.e. two separate calls. Theoretically it could be changed to do:\n [ meta load mark => reg 1 ]\n [ ct load mark => reg 9 ]\n [ byteorder reg 1 = htonl(reg 1, 4, 8) ]\n ...\n\nBut then all it would take to change the set to\nmeta mark . tcp dport . ct mark\n\n... and we'd be back to two \"byteorder\" calls. IOW, support to\nconvert a range of registers is both dysfunctional and dubious.\n\nSimplify this: remove the feature.\n\nPablo Neira Ayuso points out that nftables before 1.1.0 can generate\nincorrect byteorder conversions, see 9fe58952c45a,\n\"evaluate: skip byteorder conversion for selector smaller than 2 bytes\"\nin nftables.git). Affected rulesets fail to load with this change and\nold userspace due to 'len != size' check."
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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/netfilter/nft_byteorder.c"
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],
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"versions": [
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{
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"version": "c301f0981fdd3fd1ffac6836b423c4d7a8e0eb63",
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"lessThan": "3c5fb3a6c8118d15e60295e76fb5b879021eef43",
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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": "c301f0981fdd3fd1ffac6836b423c4d7a8e0eb63",
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"lessThan": "dc29c0478b8564feb9371e715b5a0016eb8903fd",
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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": "c301f0981fdd3fd1ffac6836b423c4d7a8e0eb63",
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"lessThan": "bb061d3de41707415269be75ebf700efb03ec212",
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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": "fca41e5b687e029f69e3a35a2fa31e2560e538dc",
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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": "25b42be4e067e107a2559266b54bf07fa5b094fb",
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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": "9a865a11d6890d4a789db1eaafebdc8bd092b12c",
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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": "b8b514b2a6cdfac24911e4910461bcb9db15ca8d",
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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": "18a169810cff769a7a697b35058c756805f589e0",
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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": "1a605657adc58b3c8e2c1c66aaa5fecd29072135",
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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": "013deed31ab15ef287b0045e4e7bd8f250e75b94",
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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": "4.19.307",
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"lessThan": "4.20",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.4.269",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.10.210",
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"lessThan": "5.11",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.15.140",
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"lessThan": "5.16",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.64",
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"lessThan": "6.2",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.5.13",
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"lessThan": "6.6",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.3",
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"lessThan": "6.7",
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"status": "affected",
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"versionType": "semver"
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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/netfilter/nft_byteorder.c"
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],
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"versions": [
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{
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"version": "6.7",
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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": "6.7",
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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": "6.12.115",
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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": "6.18.59",
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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",
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.7",
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"versionEndExcluding": "6.12.115"
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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/3c5fb3a6c8118d15e60295e76fb5b879021eef43"
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},
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{
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"url": "https://git.kernel.org/stable/c/dc29c0478b8564feb9371e715b5a0016eb8903fd"
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},
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{
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"url": "https://git.kernel.org/stable/c/bb061d3de41707415269be75ebf700efb03ec212"
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}
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],
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"title": "netfilter: nft_byteorder: remove multi-register support",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |