{"cve":"CVE-2025-37780","nvd":{"published":"2025-05-01T14:15:41.863","modified":"2026-06-17T09:15:25.567","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nisofs: Prevent the use of too small fid\n\nsyzbot reported a slab-out-of-bounds Read in isofs_fh_to_parent. [1]\n\nThe handle_bytes value passed in by the reproducing program is equal to 12.\nIn handle_to_path(), only 12 bytes of memory are allocated for the structure\nfile_handle->f_handle member, which causes an out-of-bounds access when\naccessing the member parent_block of the structure isofs_fid in isofs,\nbecause accessing parent_block requires at least 16 bytes of f_handle.\nHere, fh_len is used to indirectly confirm that the value of handle_bytes\nis greater than 3 before accessing parent_block.\n\n[1]\nBUG: KASAN: slab-out-of-bounds in isofs_fh_to_parent+0x1b8/0x210 fs/isofs/export.c:183\nRead of size 4 at addr ffff0000cc030d94 by task syz-executor215/6466\nCPU: 1 UID: 0 PID: 6466 Comm: syz-executor215 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025\nCall trace:\n show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:408 [inline]\n print_report+0x198/0x550 mm/kasan/report.c:521\n kasan_report+0xd8/0x138 mm/kasan/report.c:634\n __asan_report_load4_noabort+0x20/0x2c mm/kasan/report_generic.c:380\n isofs_fh_to_parent+0x1b8/0x210 fs/isofs/export.c:183\n exportfs_decode_fh_raw+0x2dc/0x608 fs/exportfs/expfs.c:523\n do_handle_to_path+0xa0/0x198 fs/fhandle.c:257\n handle_to_path fs/fhandle.c:385 [inline]\n do_handle_open+0x8cc/0xb8c fs/fhandle.c:403\n __do_sys_open_by_handle_at fs/fhandle.c:443 [inline]\n __se_sys_open_by_handle_at fs/fhandle.c:434 [inline]\n __arm64_sys_open_by_handle_at+0x80/0x94 fs/fhandle.c:434\n __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]\n invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49\n el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132\n do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151\n el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744\n el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762\n el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600\n\nAllocated by task 6466:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x40/0x78 mm/kasan/common.c:68\n kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:562\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\n __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:394\n kasan_kmalloc include/linux/kasan.h:260 [inline]\n __do_kmalloc_node mm/slub.c:4294 [inline]\n __kmalloc_noprof+0x32c/0x54c mm/slub.c:4306\n kmalloc_noprof include/linux/slab.h:905 [inline]\n handle_to_path fs/fhandle.c:357 [inline]\n do_handle_open+0x5a4/0xb8c fs/fhandle.c:403\n __do_sys_open_by_handle_at fs/fhandle.c:443 [inline]\n __se_sys_open_by_handle_at fs/fhandle.c:434 [inline]\n __arm64_sys_open_by_handle_at+0x80/0x94 fs/fhandle.c:434\n __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]\n invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49\n el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132\n do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151\n el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744\n el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762\n el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/007124c896e7d4614ac1f6bd4dedb975c35a2a8e","https://git.kernel.org/stable/c/0405d4b63d082861f4eaff9d39c78ee9dc34f845","https://git.kernel.org/stable/c/0fdafdaef796816a9ed0fd7ac812932d569d9beb","https://git.kernel.org/stable/c/56dfffea9fd3be0b3795a9ca6401e133a8427e0b","https://git.kernel.org/stable/c/5e7de55602c61c8ff28db075cc49c8dd6989d7e0"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:11.054312287+00:00"},"epss":{"cve":"CVE-2025-37780","score":0.00215,"percentile":0.11977,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}