{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50546","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-07T15:15:38.667Z","datePublished":"2025-10-07T15:21:09.963Z","dateUpdated":"2026-05-11T19:21:30.957Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:21:30.957Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix uninititialized value in 'ext4_evict_inode'\n\nSyzbot found the following issue:\n=====================================================\nBUG: KMSAN: uninit-value in ext4_evict_inode+0xdd/0x26b0 fs/ext4/inode.c:180\n ext4_evict_inode+0xdd/0x26b0 fs/ext4/inode.c:180\n evict+0x365/0x9a0 fs/inode.c:664\n iput_final fs/inode.c:1747 [inline]\n iput+0x985/0xdd0 fs/inode.c:1773\n __ext4_new_inode+0xe54/0x7ec0 fs/ext4/ialloc.c:1361\n ext4_mknod+0x376/0x840 fs/ext4/namei.c:2844\n vfs_mknod+0x79d/0x830 fs/namei.c:3914\n do_mknodat+0x47d/0xaa0\n __do_sys_mknodat fs/namei.c:3992 [inline]\n __se_sys_mknodat fs/namei.c:3989 [inline]\n __ia32_sys_mknodat+0xeb/0x150 fs/namei.c:3989\n do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]\n __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178\n do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203\n do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246\n entry_SYSENTER_compat_after_hwframe+0x70/0x82\n\nUninit was created at:\n __alloc_pages+0x9f1/0xe80 mm/page_alloc.c:5578\n alloc_pages+0xaae/0xd80 mm/mempolicy.c:2285\n alloc_slab_page mm/slub.c:1794 [inline]\n allocate_slab+0x1b5/0x1010 mm/slub.c:1939\n new_slab mm/slub.c:1992 [inline]\n ___slab_alloc+0x10c3/0x2d60 mm/slub.c:3180\n __slab_alloc mm/slub.c:3279 [inline]\n slab_alloc_node mm/slub.c:3364 [inline]\n slab_alloc mm/slub.c:3406 [inline]\n __kmem_cache_alloc_lru mm/slub.c:3413 [inline]\n kmem_cache_alloc_lru+0x6f3/0xb30 mm/slub.c:3429\n alloc_inode_sb include/linux/fs.h:3117 [inline]\n ext4_alloc_inode+0x5f/0x860 fs/ext4/super.c:1321\n alloc_inode+0x83/0x440 fs/inode.c:259\n new_inode_pseudo fs/inode.c:1018 [inline]\n new_inode+0x3b/0x430 fs/inode.c:1046\n __ext4_new_inode+0x2a7/0x7ec0 fs/ext4/ialloc.c:959\n ext4_mkdir+0x4d5/0x1560 fs/ext4/namei.c:2992\n vfs_mkdir+0x62a/0x870 fs/namei.c:4035\n do_mkdirat+0x466/0x7b0 fs/namei.c:4060\n __do_sys_mkdirat fs/namei.c:4075 [inline]\n __se_sys_mkdirat fs/namei.c:4073 [inline]\n __ia32_sys_mkdirat+0xc4/0x120 fs/namei.c:4073\n do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]\n __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178\n do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203\n do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246\n entry_SYSENTER_compat_after_hwframe+0x70/0x82\n\nCPU: 1 PID: 4625 Comm: syz-executor.2 Not tainted 6.1.0-rc4-syzkaller-62821-gcb231e2f67ec #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022\n=====================================================\n\nNow, 'ext4_alloc_inode()' didn't init 'ei->i_flags'. If new inode failed\nbefore set 'ei->i_flags' in '__ext4_new_inode()', then do 'iput()'. As after\n6bc0d63dad7f commit will access 'ei->i_flags' in 'ext4_evict_inode()' which\nwill lead to access uninit-value.\nTo solve above issue just init 'ei->i_flags' in 'ext4_alloc_inode()'."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/super.c"],"versions":[{"version":"bb337d8dd1e1d6b7719872e45e36392f3ab14b4f","lessThan":"f0bffdcc7cb14598af2aa706f1e0f2a9054154ba","status":"affected","versionType":"git"},{"version":"a5f9bd4beae8553480d02b569d4aabee1b49345d","lessThan":"e431b4fb1fb8c2654b808086e9747a000adb9655","status":"affected","versionType":"git"},{"version":"0e6fbc566fcc4c230bf80f76cf5df26b42142d8a","lessThan":"091f85db4c3fb1734a6d7fb4777a2b2831da6631","status":"affected","versionType":"git"},{"version":"0b885394fd009aa0b46d81b496a816ab11309f8a","lessThan":"3c31d8d3ad95aef8cc17a4fcf317e46217148439","status":"affected","versionType":"git"},{"version":"6bc0d63dad7f9f54d381925ee855b402f652fa39","lessThan":"56491d60ddca9c697d885394cb0173675b9ab81f","status":"affected","versionType":"git"},{"version":"6bc0d63dad7f9f54d381925ee855b402f652fa39","lessThan":"9f966e021c20caae639dd0e404c8761e8281a2c4","status":"affected","versionType":"git"},{"version":"6bc0d63dad7f9f54d381925ee855b402f652fa39","lessThan":"7ea71af94eaaaf6d9aed24bc94a05b977a741cb9","status":"affected","versionType":"git"},{"version":"819d16f7feaca0f2ed3409be14fe953127fc51b6","status":"affected","versionType":"git"},{"version":"458aee4a6e5be7ad862ee27dfaf07ce552d84f32","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/super.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"5.10.164","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.87","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.18","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1.4","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.163","versionEndExcluding":"5.10.164"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.61","versionEndExcluding":"5.15.87"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.0.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f0bffdcc7cb14598af2aa706f1e0f2a9054154ba"},{"url":"https://git.kernel.org/stable/c/e431b4fb1fb8c2654b808086e9747a000adb9655"},{"url":"https://git.kernel.org/stable/c/091f85db4c3fb1734a6d7fb4777a2b2831da6631"},{"url":"https://git.kernel.org/stable/c/3c31d8d3ad95aef8cc17a4fcf317e46217148439"},{"url":"https://git.kernel.org/stable/c/56491d60ddca9c697d885394cb0173675b9ab81f"},{"url":"https://git.kernel.org/stable/c/9f966e021c20caae639dd0e404c8761e8281a2c4"},{"url":"https://git.kernel.org/stable/c/7ea71af94eaaaf6d9aed24bc94a05b977a741cb9"}],"title":"ext4: fix uninititialized value in 'ext4_evict_inode'","x_generator":{"engine":"bippy-1.2.0"}}}}