CVE-2022-50752 in Linux
सारांश
द्वारा VulDB • 29/05/2026
Linux kernel में, निम्नलिखित कमजोरी को हल किया गया है:
md/raid5: raid5_read_one_chunk() में अनावश्यक bio_put() को हटाया गया
जब खराब ब्लॉक (badblocks) वाले डिस्क पर चंक-आकार के पढ़ने (chunk-sized reads) का संचालन किया जाता है, तो दोहराए गए bio फ्री/पुट (bio free/puts) देखे जाते हैं:
============================================================================= BUG bio-200 (Not tainted): Object already free ----------------------------------------------------------------------------- Allocated in mempool_alloc_slab+0x17/0x20 age=3 cpu=2 pid=7504 __slab_alloc.constprop.0+0x5a/0xb0 kmem_cache_alloc+0x31e/0x330 mempool_alloc_slab+0x17/0x20 mempool_alloc+0x100/0x2b0 bio_alloc_bioset+0x181/0x460 do_mpage_readpage+0x776/0xd00 mpage_readahead+0x166/0x1a0 ra_submit+0x100/0x1a0 filemap_read+0x130/0x1a0 filemap_readpages+0x100/0x1a0 __do_page_cache_readahead+0x2a0/0x3a0 page_cache_ra_unbounded+0x100/0x1a0 filemap_fault+0x100/0x1a0 __do_fault+0x100/0x1a0 do_fault+0x100/0x1a0 handle_mm_fault+0x100/0x1a0 __do_page_fault+0x100/0x1a0 do_page_fault+0x100/0x1a0 do_async_page_fault+0x100/0x1a0 async_page_fault+0x100/0x1a0 ret_from_fork+0x100/0x1a0
Freed in bio_free+0x100/0x1a0 age=2 cpu=2 pid=7504 __slab_free+0x100/0x1a0 kmem_cache_free+0x100/0x1a0 bio_free+0x100/0x1a0 bio_put+0x100/0x1a0 mpage_end_io+0x100/0x1a0 bio_endio+0x100/0x1a0 md_end_io_acct+0x100/0x1a0 bio_endio+0x100/1a0 handle_failed_stripe+0x100/0x1a0 handle_stripe+0x100/0x1a0 handle_active_stripes.constprop.0+0x100/0x1a0 raid5_do_work+0x100/0x1a0 process_one_work+0x100/0x1a0 worker_thread+0x100/0x1a0 kthread+0x100/0x1a0 ret_from_fork+0x100/0x1a0
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