340 lines
17 KiB
JSON
340 lines
17 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-2021-47497",
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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": "2024-05-22T06:20:56.203Z",
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"datePublished": "2024-05-22T08:19:44.144Z",
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"dateUpdated": "2026-05-11T13:55:47.564Z"
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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": "2026-05-11T13:55:47.564Z"
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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\nnvmem: Fix shift-out-of-bound (UBSAN) with byte size cells\n\nIf a cell has 'nbits' equal to a multiple of BITS_PER_BYTE the logic\n\n *p &= GENMASK((cell->nbits%BITS_PER_BYTE) - 1, 0);\n\nwill become undefined behavior because nbits modulo BITS_PER_BYTE is 0, and we\nsubtract one from that making a large number that is then shifted more than the\nnumber of bits that fit into an unsigned long.\n\nUBSAN reports this problem:\n\n UBSAN: shift-out-of-bounds in drivers/nvmem/core.c:1386:8\n shift exponent 64 is too large for 64-bit type 'unsigned long'\n CPU: 6 PID: 7 Comm: kworker/u16:0 Not tainted 5.15.0-rc3+ #9\n Hardware name: Google Lazor (rev3+) with KB Backlight (DT)\n Workqueue: events_unbound deferred_probe_work_func\n Call trace:\n dump_backtrace+0x0/0x170\n show_stack+0x24/0x30\n dump_stack_lvl+0x64/0x7c\n dump_stack+0x18/0x38\n ubsan_epilogue+0x10/0x54\n __ubsan_handle_shift_out_of_bounds+0x180/0x194\n __nvmem_cell_read+0x1ec/0x21c\n nvmem_cell_read+0x58/0x94\n nvmem_cell_read_variable_common+0x4c/0xb0\n nvmem_cell_read_variable_le_u32+0x40/0x100\n a6xx_gpu_init+0x170/0x2f4\n adreno_bind+0x174/0x284\n component_bind_all+0xf0/0x264\n msm_drm_bind+0x1d8/0x7a0\n try_to_bring_up_master+0x164/0x1ac\n __component_add+0xbc/0x13c\n component_add+0x20/0x2c\n dp_display_probe+0x340/0x384\n platform_probe+0xc0/0x100\n really_probe+0x110/0x304\n __driver_probe_device+0xb8/0x120\n driver_probe_device+0x4c/0xfc\n __device_attach_driver+0xb0/0x128\n bus_for_each_drv+0x90/0xdc\n __device_attach+0xc8/0x174\n device_initial_probe+0x20/0x2c\n bus_probe_device+0x40/0xa4\n deferred_probe_work_func+0x7c/0xb8\n process_one_work+0x128/0x21c\n process_scheduled_works+0x40/0x54\n worker_thread+0x1ec/0x2a8\n kthread+0x138/0x158\n ret_from_fork+0x10/0x20\n\nFix it by making sure there are any bits to mask out."
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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/nvmem/core.c"
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],
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"versions": [
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{
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"version": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "abcb8d33e4d2215ccde5ab5ccf9f730a59d79d97",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "60df06bbdf497e37ed25ad40572c362e5b0998df",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "2df6c023050205c4d04ffc121bc549f65cb8d1df",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "eb0fc8e7170e61eaf65d28dee4a8baf4e86b19ca",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "0594f1d048d8dc338eb9a240021b1d00ae1eb082",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "57e48886401b14cd351423fabfec2cfd18df4f66",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "0e822e5413da1af28cca350cb1cb42b6133bdcae",
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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": "69aba7948cbe53f2f1827e84e9dd0ae470a5072e",
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"lessThan": "5d388fa01fa6eb310ac023a363a6cb216d9d8fe9",
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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/nvmem/core.c"
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],
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"versions": [
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{
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"version": "4.3",
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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": "4.3",
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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": "4.4.290",
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"lessThanOrEqual": "4.4.*",
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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": "4.9.288",
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"lessThanOrEqual": "4.9.*",
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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": "4.14.252",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.213",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.155",
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"lessThanOrEqual": "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": "5.10.75",
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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": "5.14.14",
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"lessThanOrEqual": "5.14.*",
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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",
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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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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.3",
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"versionEndExcluding": "4.4.290"
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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": "4.3",
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"versionEndExcluding": "4.9.288"
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"versionStartIncluding": "4.3",
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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/abcb8d33e4d2215ccde5ab5ccf9f730a59d79d97"
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},
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{
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"url": "https://git.kernel.org/stable/c/60df06bbdf497e37ed25ad40572c362e5b0998df"
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},
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{
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"url": "https://git.kernel.org/stable/c/2df6c023050205c4d04ffc121bc549f65cb8d1df"
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},
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{
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"url": "https://git.kernel.org/stable/c/eb0fc8e7170e61eaf65d28dee4a8baf4e86b19ca"
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},
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{
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"url": "https://git.kernel.org/stable/c/0594f1d048d8dc338eb9a240021b1d00ae1eb082"
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},
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{
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"url": "https://git.kernel.org/stable/c/57e48886401b14cd351423fabfec2cfd18df4f66"
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},
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{
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"url": "https://git.kernel.org/stable/c/0e822e5413da1af28cca350cb1cb42b6133bdcae"
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},
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{
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"url": "https://git.kernel.org/stable/c/5d388fa01fa6eb310ac023a363a6cb216d9d8fe9"
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}
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],
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"title": "nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells",
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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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"title": "CISA ADP Vulnrichment",
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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-2021-47497",
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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": "2024-05-22T17:50:37.993929Z"
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}
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}
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}
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],
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"providerMetadata": {
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-06-04T17:13:32.686Z"
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}
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},
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"dateUpdated": "2024-08-04T05:39:59.611Z"
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},
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"title": "CVE Program Container",
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"references": [
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"url": "https://git.kernel.org/stable/c/abcb8d33e4d2215ccde5ab5ccf9f730a59d79d97",
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