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82 lines
4.1 KiB
JSON
82 lines
4.1 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-2022-48649",
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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\nmm/slab_common: fix possible double free of kmem_cache\n\nWhen doing slub_debug test, kfence's 'test_memcache_typesafe_by_rcu'\nkunit test case cause a use-after-free error:\n\n BUG: KASAN: use-after-free in kobject_del+0x14/0x30\n Read of size 8 at addr ffff888007679090 by task kunit_try_catch/261\n\n CPU: 1 PID: 261 Comm: kunit_try_catch Tainted: G B N 6.0.0-rc5-next-20220916 #17\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n Call Trace:\n <TASK>\n dump_stack_lvl+0x34/0x48\n print_address_description.constprop.0+0x87/0x2a5\n print_report+0x103/0x1ed\n kasan_report+0xb7/0x140\n kobject_del+0x14/0x30\n kmem_cache_destroy+0x130/0x170\n test_exit+0x1a/0x30\n kunit_try_run_case+0xad/0xc0\n kunit_generic_run_threadfn_adapter+0x26/0x50\n kthread+0x17b/0x1b0\n </TASK>\n\nThe cause is inside kmem_cache_destroy():\n\nkmem_cache_destroy\n acquire lock/mutex\n shutdown_cache\n schedule_work(kmem_cache_release) (if RCU flag set)\n release lock/mutex\n kmem_cache_release (if RCU flag not set)\n\nIn some certain timing, the scheduled work could be run before\nthe next RCU flag checking, which can then get a wrong value\nand lead to double kmem_cache_release().\n\nFix it by caching the RCU flag inside protected area, just like 'refcnt'"
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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": "357321557920",
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"version_value": "c673c6ceac53"
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},
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{
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"version_affected": "<",
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"version_name": "0495e337b703",
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"version_value": "d71608a87736"
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},
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{
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"version_affected": "<",
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"version_name": "5.19.8",
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"version_value": "5.19.12"
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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/c673c6ceac53fb2e631c9fbbd79957099a08927f",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/c673c6ceac53fb2e631c9fbbd79957099a08927f"
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},
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{
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"url": "https://git.kernel.org/stable/c/d71608a877362becdc94191f190902fac1e64d35",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/d71608a877362becdc94191f190902fac1e64d35"
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}
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]
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},
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"generator": {
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"engine": "bippy-9e1c9544281a"
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}
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} |