CVE-2026-72025
Detail
Received This CVE record has recently been published to the CVE List and has been included within the NVD dataset.
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/monwriter: Reject buffer reuse with different data length
When data buffers are reused, e.g. for interval sample records, the
first record determines the data length, and the size of the buffer for
user copy. Current monwriter code does not check if the data length was
changed for subsequent records, which also would never happen for valid
user programs.
However, a malicious user could change the data length, resulting in out
of bounds user copy to the kernel buffer, and memory corruption. By
default, the monwriter misc device is created with root-only permissions,
so practical impact is typically low.
Fix this by checking for changed data length and rejecting such records.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
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Change History
3 change records found show changes
CVE Modified by kernel.org
8/18/2026 3:16:52 AM
Action
Type
Old Value
New Value
Changed
Affected
Record truncated, showing 2048 of 2912 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/s390/char/monwriter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"096dff1247037d329c04b3a5be0ecdfb1c5c7ac6","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"759d91378203ea35fa9bca6726dcf0010de081fb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"036bc5661060702e798d215e81bb46da530965b3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"01f3ce411711c2c919598ea25320a5a48f71edbc","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f0745496f7c171271cafd9457df3b914a483ddeb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ae5347f3db1782c6118f6cc0d9fd8b1d43397db3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2995ccec260caa9e85b3301a4aba1e66ed80ad74","versionType":"git","status":"affected"},{"version":"0","lessThan":"5.10.261","versionType":"semver","status":"affected"},{"version":"0","lessThan":"5.15.212","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.1.178","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.6.145","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.12.97","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.18.40","versionType":"semver","status":"affected"},{"version":"0","lessThan":"7.1.5","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/s390/
Record truncated, showing 2048 of 2474 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/s390/char/monwriter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"096dff1247037d329c04b3a5be0ecdfb1c5c7ac6","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"759d91378203ea35fa9bca6726dcf0010de081fb","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"036bc5661060702e798d215e81bb46da530965b3","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"01f3ce411711c2c919598ea25320a5a48f71edbc","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"f0745496f7c171271cafd9457df3b914a483ddeb","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"ae5347f3db1782c6118f6cc0d9fd8b1d43397db3","versionType":"git","status":"affected"},{"version":"31b58088292c7f00f0b81088bfb557285b0b6247","lessThan":"2995ccec260caa9e85b3301a4aba1e66ed80ad74","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/s390/char/monwriter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.19","status":"affected"},{"version":"0","lessThan":"2.6.19","versionType":"semver","status":"unaffected"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","ve
CVE Modified by kernel.org
8/17/2026 2:18:00 AM
Action
Type
Old Value
New Value
Changed
Affected
Record truncated, showing 2048 of 2916 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/s390/char/monwriter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"096dff1247037d329c04b3a5be0ecdfb1c5c7ac6","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"759d91378203ea35fa9bca6726dcf0010de081fb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"036bc5661060702e798d215e81bb46da530965b3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"01f3ce411711c2c919598ea25320a5a48f71edbc","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f0745496f7c171271cafd9457df3b914a483ddeb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ae5347f3db1782c6118f6cc0d9fd8b1d43397db3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2995ccec260caa9e85b3301a4aba1e66ed80ad74","versionType":"git","status":"affected"},{"version":"0","lessThan":"5.10.261","versionType":"semver","status":"affected"},{"version":"0","lessThan":"5.15.212","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.1.178","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.6.145","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.12.97","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.18.40","versionType":"semver","status":"affected"},{"version":"0","lessThan":"7.1.5","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/s390/
Record truncated, showing 2048 of 2912 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/s390/char/monwriter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"096dff1247037d329c04b3a5be0ecdfb1c5c7ac6","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"759d91378203ea35fa9bca6726dcf0010de081fb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"036bc5661060702e798d215e81bb46da530965b3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"01f3ce411711c2c919598ea25320a5a48f71edbc","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f0745496f7c171271cafd9457df3b914a483ddeb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ae5347f3db1782c6118f6cc0d9fd8b1d43397db3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2995ccec260caa9e85b3301a4aba1e66ed80ad74","versionType":"git","status":"affected"},{"version":"0","lessThan":"5.10.261","versionType":"semver","status":"affected"},{"version":"0","lessThan":"5.15.212","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.1.178","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.6.145","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.12.97","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.18.40","versionType":"semver","status":"affected"},{"version":"0","lessThan":"7.1.5","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/s390/
New CVE Received from kernel.org
8/15/2026 2:21:01 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/monwriter: Reject buffer reuse with different data length
When data buffers are reused, e.g. for interval sample records, the
first record determines the data length, and the size of the buffer for
user copy. Current monwriter code does not check if the data length was
changed for subsequent records, which also would never happen for valid
user programs.
However, a malicious user could change the data length, resulting in out
of bounds user copy to the kernel buffer, and memory corruption. By
default, the monwriter misc device is created with root-only permissions,
so practical impact is typically low.
Fix this by checking for changed data length and rejecting such records.
Added
Reference
https://git.kernel.org/stable/c/01f3ce411711c2c919598ea25320a5a48f71edbc
Added
Reference
https://git.kernel.org/stable/c/036bc5661060702e798d215e81bb46da530965b3
Added
Reference
https://git.kernel.org/stable/c/096dff1247037d329c04b3a5be0ecdfb1c5c7ac6
Added
Reference
https://git.kernel.org/stable/c/2995ccec260caa9e85b3301a4aba1e66ed80ad74
Added
Reference
https://git.kernel.org/stable/c/759d91378203ea35fa9bca6726dcf0010de081fb
Added
Reference
https://git.kernel.org/stable/c/ae5347f3db1782c6118f6cc0d9fd8b1d43397db3
Added
Reference
https://git.kernel.org/stable/c/d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab
Added
Reference
https://git.kernel.org/stable/c/f0745496f7c171271cafd9457df3b914a483ddeb
Added
Affected
Record truncated, showing 2048 of 2916 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/s390/char/monwriter.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"096dff1247037d329c04b3a5be0ecdfb1c5c7ac6","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"759d91378203ea35fa9bca6726dcf0010de081fb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"036bc5661060702e798d215e81bb46da530965b3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"01f3ce411711c2c919598ea25320a5a48f71edbc","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f0745496f7c171271cafd9457df3b914a483ddeb","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ae5347f3db1782c6118f6cc0d9fd8b1d43397db3","versionType":"git","status":"affected"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2995ccec260caa9e85b3301a4aba1e66ed80ad74","versionType":"git","status":"affected"},{"version":"0","lessThan":"5.10.261","versionType":"semver","status":"affected"},{"version":"0","lessThan":"5.15.212","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.1.178","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.6.145","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.12.97","versionType":"semver","status":"affected"},{"version":"0","lessThan":"6.18.40","versionType":"semver","status":"affected"},{"version":"0","lessThan":"7.1.5","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/s390/
Quick Info
CVE Dictionary Entry: CVE-2026-72025 NVD
Published Date: 08/15/2026 NVD
Last Modified: 08/18/2026
Source: kernel.org
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