Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:mm: use memalloc_nofs_save() in page_cache_ra_order()See commit f2c817bed58d ("mm: use memalloc_nofs_save in readahead path"),ensure that page_cache_ra_order() do not attempt to reclaim file-backedpages too, or it leads to a deadlock, found issue when test ext4 largefolio. INFO: task DataXceiver for:7494 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:DataXceiver for state:D stack:0     pid:7494  ppid:1      flags:0x00000200 Call trace:  __switch_to+0x14c/0x240  __schedule+0x82c/0xdd0  schedule+0x58/0xf0  io_schedule+0x24/0xa0  __folio_lock+0x130/0x300  migrate_pages_batch+0x378/0x918  migrate_pages+0x350/0x700  compact_zone+0x63c/0xb38  compact_zone_order+0xc0/0x118  try_to_compact_pages+0xb0/0x280  __alloc_pages_direct_compact+0x98/0x248  __alloc_pages+0x510/0x1110  alloc_pages+0x9c/0x130  folio_alloc+0x20/0x78  filemap_alloc_folio+0x8c/0x1b0  page_cache_ra_order+0x174/0x308  ondemand_readahead+0x1c8/0x2b8  page_cache_async_ra+0x68/0xb8  filemap_readahead.isra.0+0x64/0xa8  filemap_get_pages+0x3fc/0x5b0  filemap_splice_read+0xf4/0x280  ext4_file_splice_read+0x2c/0x48 ext4]  vfs_splice_read.part.0+0xa8/0x118  splice_direct_to_actor+0xbc/0x288  do_splice_direct+0x9c/0x108  do_sendfile+0x328/0x468  __arm64_sys_sendfile64+0x8c/0x148  invoke_syscall+0x4c/0x118  el0_svc_common.constprop.0+0xc8/0xf0  do_el0_svc+0x24/0x38  el0_svc+0x4c/0x1f8  el0t_64_sync_handler+0xc0/0xc8  el0t_64_sync+0x188/0x190

CREATE(Triage):(User=admin) [CVE-2024-36882 (https://nvd.nist.gov/vuln/detail/CVE-2024-36882)

CVEs

• CVE-2024-36882