182 lines
11 KiB
JSON
182 lines
11 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-2022-49851",
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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": "2025-05-01T14:05:17.230Z",
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"datePublished": "2025-05-01T14:10:06.274Z",
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"dateUpdated": "2026-05-23T15:22:59.677Z"
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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": "2026-05-23T15:22:59.677Z"
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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\nriscv: fix reserved memory setup\n\nCurrently, RISC-V sets up reserved memory using the \"early\" copy of the\ndevice tree. As a result, when trying to get a reserved memory region\nusing of_reserved_mem_lookup(), the pointer to reserved memory regions\nis using the early, pre-virtual-memory address which causes a kernel\npanic when trying to use the buffer's name:\n\n Unable to handle kernel paging request at virtual address 00000000401c31ac\n Oops [#1]\n Modules linked in:\n CPU: 0 PID: 0 Comm: swapper Not tainted 6.0.0-rc1-00001-g0d9d6953d834 #1\n Hardware name: Microchip PolarFire-SoC Icicle Kit (DT)\n epc : string+0x4a/0xea\n ra : vsnprintf+0x1e4/0x336\n epc : ffffffff80335ea0 ra : ffffffff80338936 sp : ffffffff81203be0\n gp : ffffffff812e0a98 tp : ffffffff8120de40 t0 : 0000000000000000\n t1 : ffffffff81203e28 t2 : 7265736572203a46 s0 : ffffffff81203c20\n s1 : ffffffff81203e28 a0 : ffffffff81203d22 a1 : 0000000000000000\n a2 : ffffffff81203d08 a3 : 0000000081203d21 a4 : ffffffffffffffff\n a5 : 00000000401c31ac a6 : ffff0a00ffffff04 a7 : ffffffffffffffff\n s2 : ffffffff81203d08 s3 : ffffffff81203d00 s4 : 0000000000000008\n s5 : ffffffff000000ff s6 : 0000000000ffffff s7 : 00000000ffffff00\n s8 : ffffffff80d9821a s9 : ffffffff81203d22 s10: 0000000000000002\n s11: ffffffff80d9821c t3 : ffffffff812f3617 t4 : ffffffff812f3617\n t5 : ffffffff812f3618 t6 : ffffffff81203d08\n status: 0000000200000100 badaddr: 00000000401c31ac cause: 000000000000000d\n [<ffffffff80338936>] vsnprintf+0x1e4/0x336\n [<ffffffff80055ae2>] vprintk_store+0xf6/0x344\n [<ffffffff80055d86>] vprintk_emit+0x56/0x192\n [<ffffffff80055ed8>] vprintk_default+0x16/0x1e\n [<ffffffff800563d2>] vprintk+0x72/0x80\n [<ffffffff806813b2>] _printk+0x36/0x50\n [<ffffffff8068af48>] print_reserved_mem+0x1c/0x24\n [<ffffffff808057ec>] paging_init+0x528/0x5bc\n [<ffffffff808031ae>] setup_arch+0xd0/0x592\n [<ffffffff8080070e>] start_kernel+0x82/0x73c\n\nearly_init_fdt_scan_reserved_mem() takes no arguments as it operates on\ninitial_boot_params, which is populated by early_init_dt_verify(). On\nRISC-V, early_init_dt_verify() is called twice. Once, directly, in\nsetup_arch() if CONFIG_BUILTIN_DTB is not enabled and once indirectly,\nvery early in the boot process, by parse_dtb() when it calls\nearly_init_dt_scan_nodes().\n\nThis first call uses dtb_early_va to set initial_boot_params, which is\nnot usable later in the boot process when\nearly_init_fdt_scan_reserved_mem() is called. On arm64 for example, the\ncorresponding call to early_init_dt_scan_nodes() uses fixmap addresses\nand doesn't suffer the same fate.\n\nMove early_init_fdt_scan_reserved_mem() further along the boot sequence,\nafter the direct call to early_init_dt_verify() in setup_arch() so that\nthe names use the correct virtual memory addresses. The above supposed\nthat CONFIG_BUILTIN_DTB was not set, but should work equally in the case\nwhere it is - unflatted_and_copy_device_tree() also updates\ninitial_boot_params."
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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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"arch/riscv/kernel/setup.c",
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"arch/riscv/mm/init.c"
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],
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"versions": [
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{
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"version": "922b0375fc93fb1a20c5617e37c389c26bbccb70",
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"lessThan": "94ab8f88feb75e3b1486102c0c9c550f37d9d137",
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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": "922b0375fc93fb1a20c5617e37c389c26bbccb70",
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"lessThan": "518e49f0590de66555503aabe199ba8d3f2e24ac",
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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": "922b0375fc93fb1a20c5617e37c389c26bbccb70",
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"lessThan": "93598deb101540c4f9e7de15099ea8255b965fc2",
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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": "922b0375fc93fb1a20c5617e37c389c26bbccb70",
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"lessThan": "50e63dd8ed92045eb70a72d7ec725488320fb68b",
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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": "f18ed5bee7bb8a0e99e1c7e7d45e0e51d3497248",
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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": "5.3.8",
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"lessThan": "5.4",
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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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"arch/riscv/kernel/setup.c",
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"arch/riscv/mm/init.c"
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],
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"versions": [
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{
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"version": "5.4",
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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": "5.4",
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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": "5.10.155",
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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": "5.15.79",
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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": "6.0.9",
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"lessThanOrEqual": "6.0.*",
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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",
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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": "5.4",
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"versionEndExcluding": "5.10.155"
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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": "5.4",
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"versionEndExcluding": "5.15.79"
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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": "5.4",
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"versionEndExcluding": "6.0.9"
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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": "5.4",
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"versionEndExcluding": "6.1"
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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": "5.3.8"
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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/94ab8f88feb75e3b1486102c0c9c550f37d9d137"
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},
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{
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"url": "https://git.kernel.org/stable/c/518e49f0590de66555503aabe199ba8d3f2e24ac"
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},
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{
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"url": "https://git.kernel.org/stable/c/93598deb101540c4f9e7de15099ea8255b965fc2"
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},
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{
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"url": "https://git.kernel.org/stable/c/50e63dd8ed92045eb70a72d7ec725488320fb68b"
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}
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],
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"title": "riscv: fix reserved memory setup",
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"x_generator": {
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}
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}
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} |