CVE-2024-42300 (GCVE-0-2024-42300)
Vulnerability from cvelistv5
Published
2024-08-17 09:09
Modified
2025-05-04 09:26
Severity ?
Summary
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: <2>[772156.434168] kernel BUG at fs/erofs/zutil.c:58! .. <4>[772156.435007] <4>[772156.439237] CPU: 0 PID: 3078 Comm: stress Kdump: loaded Tainted: G E 6.10.0-rc7+ #2 <4>[772156.439239] Hardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 1.0.0 01/01/2017 <4>[772156.439241] pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) <4>[772156.439243] pc : z_erofs_put_gbuf+0x64/0x70 [erofs] <4>[772156.439252] lr : z_erofs_lz4_decompress+0x600/0x6a0 [erofs] .. <6>[772156.445958] stress (3127): drop_caches: 1 <4>[772156.446120] Call trace: <4>[772156.446121] z_erofs_put_gbuf+0x64/0x70 [erofs] <4>[772156.446761] z_erofs_lz4_decompress+0x600/0x6a0 [erofs] <4>[772156.446897] z_erofs_decompress_queue+0x740/0xa10 [erofs] <4>[772156.447036] z_erofs_runqueue+0x428/0x8c0 [erofs] <4>[772156.447160] z_erofs_readahead+0x224/0x390 [erofs] ..
References
Impacted products
Vendor Product Version
Linux Linux Version: f36f3010f67611a45d66e773bc91e4c66a9abab5
Version: f36f3010f67611a45d66e773bc91e4c66a9abab5
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix race in z_erofs_get_gbuf()\n\nIn z_erofs_get_gbuf(), the current task may be migrated to another\nCPU between `z_erofs_gbuf_id()` and `spin_lock(\u0026gbuf-\u003elock)`.\n\nTherefore, z_erofs_put_gbuf() will trigger the following issue\nwhich was found by stress test:\n\n\u003c2\u003e[772156.434168] kernel BUG at fs/erofs/zutil.c:58!\n..\n\u003c4\u003e[772156.435007]\n\u003c4\u003e[772156.439237] CPU: 0 PID: 3078 Comm: stress Kdump: loaded Tainted: G            E      6.10.0-rc7+ #2\n\u003c4\u003e[772156.439239] Hardware name: Alibaba Cloud Alibaba Cloud ECS, BIOS 1.0.0 01/01/2017\n\u003c4\u003e[772156.439241] pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)\n\u003c4\u003e[772156.439243] pc : z_erofs_put_gbuf+0x64/0x70 [erofs]\n\u003c4\u003e[772156.439252] lr : z_erofs_lz4_decompress+0x600/0x6a0 [erofs]\n..\n\u003c6\u003e[772156.445958] stress (3127): drop_caches: 1\n\u003c4\u003e[772156.446120] Call trace:\n\u003c4\u003e[772156.446121]  z_erofs_put_gbuf+0x64/0x70 [erofs]\n\u003c4\u003e[772156.446761]  z_erofs_lz4_decompress+0x600/0x6a0 [erofs]\n\u003c4\u003e[772156.446897]  z_erofs_decompress_queue+0x740/0xa10 [erofs]\n\u003c4\u003e[772156.447036]  z_erofs_runqueue+0x428/0x8c0 [erofs]\n\u003c4\u003e[772156.447160]  z_erofs_readahead+0x224/0x390 [erofs]\n.."
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    "state": "PUBLISHED"
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