The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - dm-raid456, md/raid456: fix a deadlock for dm-raid456 while io concurrent with reshape For raid456, if     reshape is still in progress, then IO across reshape position will wait for reshape to make progress.
    However, for dm-raid, in following cases reshape will never make progress hence IO will hang: 1) the array     is read-only; 2) MD_RECOVERY_WAIT is set; 3) MD_RECOVERY_FROZEN is set; After commit c467e97f079f     (md/raid6: use valid sector values to determine if an I/O should wait on the reshape) fix the problem     that IO across reshape position doesn't wait for reshape, the dm-raid test shell/lvconvert-raid-reshape.sh     start to hang: [root@fedora ~]# cat /proc/979/stack [<0>] wait_woken+0x7d/0x90 [<0>]     raid5_make_request+0x929/0x1d70 [raid456] [<0>] md_handle_request+0xc2/0x3b0 [md_mod] [<0>]     raid_map+0x2c/0x50 [dm_raid] [<0>] __map_bio+0x251/0x380 [dm_mod] [<0>] dm_submit_bio+0x1f0/0x760 [dm_mod]     [<0>] __submit_bio+0xc2/0x1c0 [<0>] submit_bio_noacct_nocheck+0x17f/0x450 [<0>]     submit_bio_noacct+0x2bc/0x780 [<0>] submit_bio+0x70/0xc0 [<0>] mpage_readahead+0x169/0x1f0 [<0>]     blkdev_readahead+0x18/0x30 [<0>] read_pages+0x7c/0x3b0 [<0>] page_cache_ra_unbounded+0x1ab/0x280 [<0>]     force_page_cache_ra+0x9e/0x130 [<0>] page_cache_sync_ra+0x3b/0x110 [<0>] filemap_get_pages+0x143/0xa30     [<0>] filemap_read+0xdc/0x4b0 [<0>] blkdev_read_iter+0x75/0x200 [<0>] vfs_read+0x272/0x460 [<0>]     ksys_read+0x7a/0x170 [<0>] __x64_sys_read+0x1c/0x30 [<0>] do_syscall_64+0xc6/0x230 [<0>]     entry_SYSCALL_64_after_hwframe+0x6c/0x74 This is because reshape can't make progress. For md/raid, the     problem doesn't exist because register new sync_thread doesn't rely on the IO to be done any more: 1) If     array is read-only, it can switch to read-write by ioctl/sysfs; 2) md/raid never set MD_RECOVERY_WAIT; 3)     If MD_RECOVERY_FROZEN is set, mddev_suspend() doesn't hold 'reconfig_mutex', hence it can be cleared and     reshape can continue by sysfs api 'sync_action'. However, I'm not sure yet how to avoid the problem in dm-     raid yet. This patch on the one hand make sure raid_message() can't change sync_thread() through     raid_message() after presuspend(), on the other hand detect the above 3 cases before wait for IO do be     done in dm_suspend(), and let dm-raid requeue those IO. (CVE-2024-26962)

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Linux Distros Unpatched Vulnerability : CVE-2024-26962

medium Nessus Plugin ID 228105

Version 1.8