CVE-2025-38267
published 2025-07-10CVE-2025-38267: In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun When reading a memory mapped…
PriorityP341high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.18%
7.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
When reading a memory mapped buffer the reader page is just swapped out
with the last page written in the write buffer. If the reader page is the
same as the commit buffer (the buffer that is currently being written to)
it was assumed that it should never have missed events. If it does, it
triggers a WARN_ON_ONCE().
But there just happens to be one scenario where this can legitimately
happen. That is on a commit_overrun. A commit overrun is when an interrupt
preempts an event being written to the buffer and then the interrupt adds
so many new events that it fills and wraps the buffer back to the commit.
Any new events would then be dropped and be reported as "missed_events".
In this case, the next page to read is the commit buffer and after the
swap of the reader page, the reader page will be the commit buffer, but
this time there will be missed events and this triggers the following
warning:
------------[ cut here ]------------
WARNING: CPU: 2 PID: 1127 at kernel/trace/ring_buffer.c:7357 ring_buffer_map_get_reader+0x49a/0x780
Modules linked in: kvm_intel kvm irqbypass
CPU: 2 UID: 0 PID: 1127 Comm: trace-cmd Not tainted 6.15.0-rc7-test-00004-g478bc2824b45-dirty #564 PREEMPT
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ring_buffer_map_get_reader+0x49a/0x780
Code: 00 00 00 48 89 fe 48 c1 ee 03 80 3c 2e 00 0f 85 ec 01 00 00 4d 3b a6 a8 00 00 00 0f 85 8a fd ff ff 48 85 c0 0f 84 55 fe ff ff 0b e9 4e fe ff ff be 08 00 00 00 4c 89 54 24 58 48 89 54 24 50
RSP: 0018:ffff888121787dc0 EFLAGS: 00010002
RAX: 00000000000006a2 RBX: ffff888100062800 RCX: ffffffff8190cb49
RDX: ffff888126934c00 RSI: 1ffff11020200a15 RDI: ffff8881010050a8
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffed1024d26982
R10: ffff888126934c17 R11: ffff8881010050a8 R12: ffff888126934c00
R13: ffff8881010050b8 R14: ff
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.12.35-1 (forky) | linux 6.12.35-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= fe832be05a8eee5f1488cbcc2c562dd82d079fd6 < b8df8cb8f7eef52baa9ac5bf36a405ca67945a91 | b8df8cb8f7eef52baa9ac5bf36a405ca67945a91 |
| linux | linux | >= fe832be05a8eee5f1488cbcc2c562dd82d079fd6 < e018053632bad8ee0752242c7d2cffb0bbf45404 | e018053632bad8ee0752242c7d2cffb0bbf45404 |
| linux | linux | >= fe832be05a8eee5f1488cbcc2c562dd82d079fd6 < 4fc78a7c9ca994e1da5d3940704d4e8f0ea8c5e4 | 4fc78a7c9ca994e1da5d3940704d4e8f0ea8c5e4 |
| linux | linux_kernel | >= 0 < 6.12.35-1 | 6.12.35-1 |
| linux | linux_kernel | >= 0 < 6.12.35-1 | 6.12.35-1 |
| linux | linux_kernel | >= 6.10 < 6.12.34 | 6.12.34 |
| linux | linux_kernel | >= 6.13 < 6.15.3 | 6.15.3 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
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vendor_redhat·2025-07-10·CVSS 7.8
CVE-2025-38267 [HIGH] CWE-821 kernel: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
kernel: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
When reading a memory mapped buffer the reader page is just swapped out
with the last page written in the write buffer. If the reader page is the
same as the commit buffer (the buffer that is currently being written to)
it was assumed that it should never have missed events. If it does, it
triggers a WARN_ON_ONCE().
But there just happens to be one scenario where this can legitimately
happen. That is on a commit_overrun. A commit overrun is when an interrupt
preempts an event being written to the buffer and then the interrupt adds
so many new events that it fills and wraps the buffer back to
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CVE-2025-38267: linux - In the Linux kernel, the following vulnerability has been resolved: ring-buffer...
vendor_debian·2025·CVSS 7.8
CVE-2025-38267 [HIGH] CVE-2025-38267: linux - In the Linux kernel, the following vulnerability has been resolved: ring-buffer...
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun When reading a memory mapped buffer the reader page is just swapped out with the last page written in the write buffer. If the reader page is the same as the commit buffer (the buffer that is currently being written to) it was assumed that it should never have missed events. If it does, it triggers a WARN_ON_ONCE(). But there just happens to be one scenario where this can legitimately happen. That is on a commit_overrun. A commit overrun is when an interrupt preempts an event being written to the buffer and then the interrupt adds so many new events that it fills and wraps the buffer back to the commit. Any new events would then be dropped and be reported as "mi
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- ACPI drivers;
- Android drivers;
- Bluetooth drivers;
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- CPU frequency scaling framework;
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- CPU frequency scaling framework;
- Hardware crypto device drivers;
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- EDAC drivers;
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- Bus devices;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
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- EDAC drivers;
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- Cryptographic API;
- ACPI drivers;
- Android drivers;
- Bluetooth drivers;
- Bus devices;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EDAC drivers;
- Arm Firmware Framework for ARMv8-A(FFA);
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- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- Android drivers;
- Bluetooth drivers;
- Bus devices;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
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An attacker could possibly use these to compromise the system.
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- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- Android drivers;
- Bluetooth drivers;
- Bus devices;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EDAC drivers;
- Arm Firmware Framework for ARMv8-A(FFA);
- FPGA Framework;
- GPIO subsystem;
- GPU drivers;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- Android drivers;
- Bluetooth drivers;
- Bus devices;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EDAC drivers;
- Arm Firmware Framework for ARMv8-A(FFA);
- FPGA Framework;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring drivers;
- HW tracing;
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GHSA
GHSA-hjw2-6772-mrxq: In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
When reading a mem
ghsa_unreviewed·2025-07-10
CVE-2025-38267 [HIGH] CWE-787 GHSA-hjw2-6772-mrxq: In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
When reading a mem
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
When reading a memory mapped buffer the reader page is just swapped out
with the last page written in the write buffer. If the reader page is the
same as the commit buffer (the buffer that is currently being written to)
it was assumed that it should never have missed events. If it does, it
triggers a WARN_ON_ONCE().
But there just happens to be one scenario where this can legitimately
happen. That is on a commit_overrun. A commit overrun is when an interrupt
preempts an event being written to the buffer and then the interrupt adds
so many new events that it fills and wraps the buffer back to the commit.
Any new events would then be dropped and be reported as
OSV
CVE-2025-38267: In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun When reading a memor
osv·2025-07-10·CVSS 7.8
CVE-2025-38267 [HIGH] CVE-2025-38267: In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun When reading a memor
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not trigger WARN_ON() due to a commit_overrun When reading a memory mapped buffer the reader page is just swapped out with the last page written in the write buffer. If the reader page is the same as the commit buffer (the buffer that is currently being written to) it was assumed that it should never have missed events. If it does, it triggers a WARN_ON_ONCE(). But there just happens to be one scenario where this can legitimately happen. That is on a commit_overrun. A commit overrun is when an interrupt preempts an event being written to the buffer and then the interrupt adds so many new events that it fills and wraps the buffer back to the commit. Any new events would then be dropped and be reported as "mi
No detection rules found.
No public exploits indexed.
2025-07-10
Published