ghsa-g586-9cjh-f4c9
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
tracing: Fix oob write in trace_seq_to_buffer()
syzbot reported this bug:
BUG: KASAN: slab-out-of-bounds in trace_seq_to_buffer kernel/trace/trace.c:1830 [inline] BUG: KASAN: slab-out-of-bounds in tracing_splice_read_pipe+0x6be/0xdd0 kernel/trace/trace.c:6822 Write of size 4507 at addr ffff888032b6b000 by task syz.2.320/7260
CPU: 1 UID: 0 PID: 7260 Comm: syz.2.320 Not tainted 6.15.0-rc1-syzkaller-00301-g3bde70a2c827 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 __asan_memcpy+0x3c/0x60 mm/kasan/shadow.c:106 trace_seq_to_buffer kernel/trace/trace.c:1830 [inline] tracing_splice_read_pipe+0x6be/0xdd0 kernel/trace/trace.c:6822 .... ==================================================================
It has been reported that trace_seq_to_buffer() tries to copy more data than PAGE_SIZE to buf. Therefore, to prevent this, we should use the smaller of trace_seq_used(&iter->seq) and PAGE_SIZE as an argument.
{
"affected": [],
"aliases": [
"CVE-2025-37923"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-20T16:15:28Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix oob write in trace_seq_to_buffer()\n\nsyzbot reported this bug:\n==================================================================\nBUG: KASAN: slab-out-of-bounds in trace_seq_to_buffer kernel/trace/trace.c:1830 [inline]\nBUG: KASAN: slab-out-of-bounds in tracing_splice_read_pipe+0x6be/0xdd0 kernel/trace/trace.c:6822\nWrite of size 4507 at addr ffff888032b6b000 by task syz.2.320/7260\n\nCPU: 1 UID: 0 PID: 7260 Comm: syz.2.320 Not tainted 6.15.0-rc1-syzkaller-00301-g3bde70a2c827 #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:408 [inline]\n print_report+0xc3/0x670 mm/kasan/report.c:521\n kasan_report+0xe0/0x110 mm/kasan/report.c:634\n check_region_inline mm/kasan/generic.c:183 [inline]\n kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189\n __asan_memcpy+0x3c/0x60 mm/kasan/shadow.c:106\n trace_seq_to_buffer kernel/trace/trace.c:1830 [inline]\n tracing_splice_read_pipe+0x6be/0xdd0 kernel/trace/trace.c:6822\n ....\n==================================================================\n\nIt has been reported that trace_seq_to_buffer() tries to copy more data\nthan PAGE_SIZE to buf. Therefore, to prevent this, we should use the\nsmaller of trace_seq_used(\u0026iter-\u003eseq) and PAGE_SIZE as an argument.",
"id": "GHSA-g586-9cjh-f4c9",
"modified": "2025-06-04T15:30:28Z",
"published": "2025-05-20T18:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37923"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/056ebbddb8faf4ddf83d005454dd78fc25c2d897"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1a3f9482b50b74fa9421bff8ceecfefd0dc06f8f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1f27a3e93b8d674b24b27fcdbc6f72743cd96c0d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/441021e5b3c7d9bd1b963590652c415929f3b157"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/665ce421041890571852422487f4c613d1824ba9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c5d2b66c5ef5037b4b4360e5447605ff00ba1bd4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f4b0174e9f18aaba59ee6ffdaf8827a7f94eb606"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f5178c41bb43444a6008150fe6094497135d07cb"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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