Description
In the Linux kernel, the following vulnerability has been resolved: erofs: fix race in z_erofs_get_gbuf() In z_erofs_get_gbuf(), the current task may be migrated to another CPU between `z_erofs_gbuf_id()` and `spin_lock(&gbuf->lock)`. Therefore, z_erofs_put_gbuf() will trigger the following issue which was found by stress test: [772156.434168] kernel BUG at fs/erofs/zutil.c:58! .. [772156.435007] [772156.439237] CPU: 0 PID: 3078 Comm: stress Kdump: loaded Tainted: G E 6.10.0-rc7+ #2 [772156.439239] Hardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 1.0.0 01/01/2017 [772156.439241] pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) [772156.439243] pc : z_erofs_put_gbuf+0x64/0x70 [erofs] [772156.439252] lr : z_erofs_lz4_decompress+0x600/0x6a0 [erofs] .. [772156.445958] stress (3127): drop_caches: 1 [772156.446120] Call trace: [772156.446121] z_erofs_put_gbuf+0x64/0x70 [erofs] [772156.446761] z_erofs_lz4_decompress+0x600/0x6a0 [erofs] [772156.446897] z_erofs_decompress_queue+0x740/0xa10 [erofs] [772156.447036] z_erofs_runqueue+0x428/0x8c0 [erofs] [772156.447160] z_erofs_readahead+0x224/0x390 [erofs] ..
Details
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux-kernel | 6.10 | 6.10.3 |
References
Similar Threats
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