{"id":"CVE-2024-42300","summary":"erofs: fix race in z_erofs_get_gbuf()","details":"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(&gbuf-\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..","modified":"2026-08-12T03:51:39.201463574Z","published":"2024-08-17T09:09:07.311Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42300.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/49b22e06a947727a6d1c802d2d9ad92420b90fc5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7dc5537c3f8be87e005f0844a7626c987914f8fd"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42300.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42300"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f36f3010f67611a45d66e773bc91e4c66a9abab5"},{"fixed":"49b22e06a947727a6d1c802d2d9ad92420b90fc5"},{"fixed":"7dc5537c3f8be87e005f0844a7626c987914f8fd"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42300.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.10.0"},{"fixed":"6.10.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42300.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}