CVE-2025-37923 (GCVE-0-2025-37923)

Vulnerability from cvelistv5 – Published: 2025-05-20 15:21 – Updated: 2025-11-03 19:57
VLAI?
Title
tracing: Fix oob write in trace_seq_to_buffer()
Summary
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: <TASK> __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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < f4b0174e9f18aaba59ee6ffdaf8827a7f94eb606 (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < 665ce421041890571852422487f4c613d1824ba9 (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < 1a3f9482b50b74fa9421bff8ceecfefd0dc06f8f (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < 441021e5b3c7d9bd1b963590652c415929f3b157 (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < 056ebbddb8faf4ddf83d005454dd78fc25c2d897 (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < 1f27a3e93b8d674b24b27fcdbc6f72743cd96c0d (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < c5d2b66c5ef5037b4b4360e5447605ff00ba1bd4 (git)
Affected: 3c56819b14b00dd449bd776303e61f8532fad09f , < f5178c41bb43444a6008150fe6094497135d07cb (git)
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    Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 5.4.294 , ≤ 5.4.* (semver)
Unaffected: 5.10.238 , ≤ 5.10.* (semver)
Unaffected: 5.15.182 , ≤ 5.15.* (semver)
Unaffected: 6.1.138 , ≤ 6.1.* (semver)
Unaffected: 6.6.90 , ≤ 6.6.* (semver)
Unaffected: 6.12.28 , ≤ 6.12.* (semver)
Unaffected: 6.14.6 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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          "value": "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."
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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