Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from ext4 in parseapplysbmountoptions that could lead to a memory leak...

ext4: fix i_data_sem unlock order in ext4_ind_migrate()

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ext4: check stripe size compatibility on remount as well

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kernel: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()

A vulnerability was found in the ext4mbtrybestfound function in the Linux kernel. This issue could lead to memory corruption or crashes due to the allocation of blocks from a group with a corrupted block bitmap...

kernel: ext4: fix rbtree traversal bug in ext4_mb_use_preallocated

A flaw was identified in the ext4 filesystem’s block preallocation allocator in the Linux kernel. During allocation, the code traverses an rbtree of per-inode preallocations.Concurrently, the helper ext4mbdiscardgrouppreallocation can mark PAs as deleted, which may cause a naive rbtree traversal ...

An exploitable code execution vulnerability exists in the quota file functionality of E2fsprogs 1.45.3. A specially crafted ext4 partition can cause an out-of-bounds write on the heap resulting in code execution. An attacker can corrupt a partition to trigger this vulnerability.

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Important: kernel-livepatch-4.14.177-139.253

Issue Overview: In the Linux kernel 5.0.21, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4xattrsetentry use-after-free in fs/ext4/xattr.c when a large oldsize value is used in a memset call. CVE-2019-19319 Affected...