mirror of
https://github.com/CVEProject/cvelist.git
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113 lines
7.1 KiB
JSON
113 lines
7.1 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2024-56613",
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/numa: fix memory leak due to the overwritten vma->numab_state\n\n[Problem Description]\nWhen running the hackbench program of LTP, the following memory leak is\nreported by kmemleak.\n\n # /opt/ltp/testcases/bin/hackbench 20 thread 1000\n Running with 20*40 (== 800) tasks.\n\n # dmesg | grep kmemleak\n ...\n kmemleak: 480 new suspected memory leaks (see /sys/kernel/debug/kmemleak)\n kmemleak: 665 new suspected memory leaks (see /sys/kernel/debug/kmemleak)\n\n # cat /sys/kernel/debug/kmemleak\n unreferenced object 0xffff888cd8ca2c40 (size 64):\n comm \"hackbench\", pid 17142, jiffies 4299780315\n hex dump (first 32 bytes):\n ac 74 49 00 01 00 00 00 4c 84 49 00 01 00 00 00 .tI.....L.I.....\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace (crc bff18fd4):\n [<ffffffff81419a89>] __kmalloc_cache_noprof+0x2f9/0x3f0\n [<ffffffff8113f715>] task_numa_work+0x725/0xa00\n [<ffffffff8110f878>] task_work_run+0x58/0x90\n [<ffffffff81ddd9f8>] syscall_exit_to_user_mode+0x1c8/0x1e0\n [<ffffffff81dd78d5>] do_syscall_64+0x85/0x150\n [<ffffffff81e0012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n ...\n\nThis issue can be consistently reproduced on three different servers:\n * a 448-core server\n * a 256-core server\n * a 192-core server\n\n[Root Cause]\nSince multiple threads are created by the hackbench program (along with\nthe command argument 'thread'), a shared vma might be accessed by two or\nmore cores simultaneously. When two or more cores observe that\nvma->numab_state is NULL at the same time, vma->numab_state will be\noverwritten.\n\nAlthough current code ensures that only one thread scans the VMAs in a\nsingle 'numa_scan_period', there might be a chance for another thread\nto enter in the next 'numa_scan_period' while we have not gotten till\nnumab_state allocation [1].\n\nNote that the command `/opt/ltp/testcases/bin/hackbench 50 process 1000`\ncannot the reproduce the issue. It is verified with 200+ test runs.\n\n[Solution]\nUse the cmpxchg atomic operation to ensure that only one thread executes\nthe vma->numab_state assignment.\n\n[1] https://lore.kernel.org/lkml/1794be3c-358c-4cdc-a43d-a1f841d91ef7@amd.com/"
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "ef6a22b70f6d90449a5c797b8968a682824e2011",
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"version_value": "8f149bcc4d91ac92b32ff4949b291e6ed883dc42"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "6.4",
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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": "6.4",
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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": "6.6.66",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.5",
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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": "6.13-rc2",
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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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"defaultStatus": "affected"
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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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}
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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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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/8f149bcc4d91ac92b32ff4949b291e6ed883dc42",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/8f149bcc4d91ac92b32ff4949b291e6ed883dc42"
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},
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{
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"url": "https://git.kernel.org/stable/c/a71ddd5b87cda687efa28e049e85e923689bcef9",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a71ddd5b87cda687efa28e049e85e923689bcef9"
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},
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{
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"url": "https://git.kernel.org/stable/c/5f1b64e9a9b7ee9cfd32c6b2fab796e29bfed075",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/5f1b64e9a9b7ee9cfd32c6b2fab796e29bfed075"
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}
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]
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},
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"generator": {
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"engine": "bippy-5f407fcff5a0"
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}
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} |