{"id":"DEBIAN-CVE-2026-53060","details":"In the Linux kernel, the following vulnerability has been resolved:  dm cache metadata: fix memory leak on metadata abort retry  When failing to acquire the root_lock in dm_cache_metadata_abort because the block_manager is read-only, the temporary block_manager created outside the root_lock is not properly released, causing a memory leak.  Reproduce steps:  This can be reproduced by reloading a new table while the metadata is read-only. While the second call to dm_cache_metadata_abort is caused by lack of support for table preload in dm-cache, mentioned in commit 9b1cc9f251af (\"dm cache: share cache-metadata object across inactive and active DM tables\"), it exposes the memory leak in dm_cache_metadata_abort when the function is called multiple times. Specifically, dm-cache fails to sync the new cache object's mode during preresume, creating the reproducer condition.  This issue could also occur through concurrent metadata_operation_failed calls due to races in cache mode updates, but the table preload scenario below provides a reliable reproducer.  1. Create a cache device with some faulty trailing metadata blocks  dmsetup create cmeta \u003c\u003cEOF 0 200 linear /dev/sdc 0 200 7992 error EOF dmsetup create cdata --table \"0 131072 linear /dev/sdc 8192\" dmsetup create corig --table \"0 262144 linear /dev/sdc 262144\" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table \"0 131072 cache /dev/mapper/cmeta \\ /dev/mapper/cdata /dev/mapper/corig 128 1 writethrough smq 0\"  2. Suspend and resume the cache to start a new metadata transaction and    trigger metadata io errors on the next metadata commit.  dmsetup suspend cache dmsetup resume cache  3. Write to the cache device to update metadata  fio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\ --randrepeat=0 --direct=1 --size 64k  4. Preload the same table  dmsetup reload cache --table \"$(dmsetup table cache)\"  5. Resume the new table. This triggers the memory leak.  dmsetup suspend cache dmsetup resume cache  kmemleak logs:  \u003csnip\u003e unreferenced object 0xffff8880080c2010 (size 16):   comm \"dmsetup\", pid 132, jiffies 4294982580   hex dump (first 16 bytes):     00 38 b9 07 80 88 ff ff 6a 6b 6b 6b 6b 6b 6b a5 ...   backtrace (crc 3118f31c):     kmemleak_alloc+0x28/0x40     __kmalloc_cache_noprof+0x3d9/0x510     dm_block_manager_create+0x51/0x140     dm_cache_metadata_abort+0x85/0x320     metadata_operation_failed+0x103/0x1e0     cache_preresume+0xacd/0xe70     dm_table_resume_targets+0xd3/0x320     __dm_resume+0x1b/0xf0     dm_resume+0x127/0x170 \u003csnip\u003e","modified":"2026-10-01T03:03:17.622167249Z","published":"2026-06-24T17:17:18.717Z","upstream":["CVE-2026-53060"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-53060"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.176-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.153-1","6.1.158-1","6.1.159-1","6.1.162-1","6.1.164-1","6.1.170-1","6.1.170-2","6.1.170-3","6.1.172-1","6.1.174-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not 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