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https://github.com/fkie-cad/nvd-json-data-feeds.git
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25 lines
2.7 KiB
JSON
25 lines
2.7 KiB
JSON
{
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"id": "CVE-2024-53222",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-12-27T14:15:30.327",
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"lastModified": "2024-12-27T14:15:30.327",
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"vulnStatus": "Awaiting Analysis",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nzram: fix NULL pointer in comp_algorithm_show()\n\nLTP reported a NULL pointer dereference as followed:\n\n CPU: 7 UID: 0 PID: 5995 Comm: cat Kdump: loaded Not tainted 6.12.0-rc6+ #3\n Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015\n pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : __pi_strcmp+0x24/0x140\n lr : zcomp_available_show+0x60/0x100 [zram]\n sp : ffff800088b93b90\n x29: ffff800088b93b90 x28: 0000000000000001 x27: 0000000000400cc0\n x26: 0000000000000ffe x25: ffff80007b3e2388 x24: 0000000000000000\n x23: ffff80007b3e2390 x22: ffff0004041a9000 x21: ffff80007b3e2900\n x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: ffff80007b3e2900 x9 : ffff80007b3cb280\n x8 : 0101010101010101 x7 : 0000000000000000 x6 : 0000000000000000\n x5 : 0000000000000040 x4 : 0000000000000000 x3 : 00656c722d6f7a6c\n x2 : 0000000000000000 x1 : ffff80007b3e2900 x0 : 0000000000000000\n Call trace:\n __pi_strcmp+0x24/0x140\n comp_algorithm_show+0x40/0x70 [zram]\n dev_attr_show+0x28/0x80\n sysfs_kf_seq_show+0x90/0x140\n kernfs_seq_show+0x34/0x48\n seq_read_iter+0x1d4/0x4e8\n kernfs_fop_read_iter+0x40/0x58\n new_sync_read+0x9c/0x168\n vfs_read+0x1a8/0x1f8\n ksys_read+0x74/0x108\n __arm64_sys_read+0x24/0x38\n invoke_syscall+0x50/0x120\n el0_svc_common.constprop.0+0xc8/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x38/0x138\n el0t_64_sync_handler+0xc0/0xc8\n el0t_64_sync+0x188/0x190\n\nThe zram->comp_algs[ZRAM_PRIMARY_COMP] can be NULL in zram_add() if\ncomp_algorithm_set() has not been called. User can access the zram device\nby sysfs after device_add_disk(), so there is a time window to trigger the\nNULL pointer dereference. Move it ahead device_add_disk() to make sure\nwhen user can access the zram device, it is ready. comp_algorithm_set()\nis protected by zram->init_lock in other places and no such problem."
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/843d366ff19708668d95cda16bb8aba109a93dba",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/f364cdeb38938f9d03061682b8ff3779dd1730e5",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |