Description
In the Linux kernel, the following vulnerability has been resolved: ext4: turn quotas off if mount failed after enabling quotas Yi found during a review of the patch "ext4: don't BUG on inconsistent journal feature" that when ext4_mark_recovery_complete() returns an error value, the error handling path does not turn off the enabled quotas, which triggers the following kmemleak: ================================================================ unreferenced object 0xffff8cf68678e7c0 (size 64): comm "mount", pid 746, jiffies 4294871231 (age 11.540s) hex dump (first 32 bytes): 00 90 ef 82 f6 8c ff ff 00 00 00 00 41 01 00 00 ............A... c7 00 00 00 bd 00 00 00 0a 00 00 00 48 00 00 00 ............H... backtrace: [<00000000c561ef24>] __kmem_cache_alloc_node+0x4d4/0x880 [<00000000d4e621d7>] kmalloc_trace+0x39/0x140 [<00000000837eee74>] v2_read_file_info+0x18a/0x3a0 [<0000000088f6c877>] dquot_load_quota_sb+0x2ed/0x770 [<00000000340a4782>] dquot_load_quota_inode+0xc6/0x1c0 [<0000000089a18bd5>] ext4_enable_quotas+0x17e/0x3a0 [ext4] [<000000003a0268fa>] __ext4_fill_super+0x3448/0x3910 [ext4] [<00000000b0f2a8a8>] ext4_fill_super+0x13d/0x340 [ext4] [<000000004a9489c4>] get_tree_bdev+0x1dc/0x370 [<000000006e723bf1>] ext4_get_tree+0x1d/0x30 [ext4] [<00000000c7cb663d>] vfs_get_tree+0x31/0x160 [<00000000320e1bed>] do_new_mount+0x1d5/0x480 [<00000000c074654c>] path_mount+0x22e/0xbe0 [<0000000003e97a8e>] do_mount+0x95/0xc0 [<000000002f3d3736>] __x64_sys_mount+0xc4/0x160 [<0000000027d2140c>] do_syscall_64+0x3f/0x90 ================================================================ To solve this problem, we add a "failed_mount10" tag, and call ext4_quota_off_umount() in this tag to release the enabled qoutas.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
11215630aada28307ba555a43138db6ac54fa825 to < c327b83c59ee938792a0300df646efac39c7d6a7affected11215630aada28307ba555a43138db6ac54fa825 to < deef86fa3005cbb61ae8aa5729324c09b3f4ba73affected11215630aada28307ba555a43138db6ac54fa825 to < 77c3ca1108eb4a26db4f256c42b271a430cebc7daffected11215630aada28307ba555a43138db6ac54fa825 to < d13f99632748462c32fc95d729f5e754bab06064affected60e2824ab30a19c7aaf5a3932bc155d18b2cd816affecteda6d49257cbe53c7bca1a0353a6443f53cbed9cc7affected2e7312ddaf629eecf4702b662da477a3bc39c31aaffectedd558851e5ff443b020245b7a1a455c55accf740baffected4.14.196 to < 4.15affected4.19.143 to < 4.20affected5.4.62 to < 5.5affected5.8.6 to < 5.9affected
Linux Linux
Default version status: affected
5.9affected0 to < 5.9unaffected5.15.121 to ≤ 5.15.*unaffected6.1.40 to ≤ 6.1.*unaffected6.4.5 to ≤ 6.4.*unaffected6.5 to ≤ *unaffected