CVE-2026-99098 (GCVE-0-2026-99098)

Vulnerability from cvelistv5 – Published: 2026-10-26 14:52 – Updated: 2026-10-26 14:52
VLAI
Title
dm-integrity: fix buffer overflow in inline mode with large tag size
Summary
In the Linux kernel, the following vulnerability has been resolved: dm-integrity: fix buffer overflow in inline mode with large tag size In inline mode, dm_integrity_check and dm_integrity_inline_recheck compute the checksum of each block into an on-stack buffer of HASH_MAX_DIGESTSIZE bytes. integrity_sector_checksum pads its result with zeroes up to the tag size, so if the tag size is larger than HASH_MAX_DIGESTSIZE, the padding runs past the end of the buffer. With CONFIG_STACKPROTECTOR the kernel panics in dm_integrity_check on the first read. Enlarge both buffers to hold MAX_TAG_SIZE bytes, as commit b93b6643e9b5 ("dm integrity: fix a crash with unusually large tag size") did for integrity_metadata. Note that this is not a security bug because the buffer overflow can only be triggered by root.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fb0987682c629c1d2c476f35f6fde405a5e304a4 , < 3c7aad85aeb9e28386672e3a009aa2e61f751b86 (git)
Affected: fb0987682c629c1d2c476f35f6fde405a5e304a4 , < 4f0ee735dc68e3e6c4dd9a666d7f7047163c4165 (git)
Affected: fb0987682c629c1d2c476f35f6fde405a5e304a4 , < f49cd7820cd0a96f20e1aa2708adb002124e38a7 (git)
Affected: fb0987682c629c1d2c476f35f6fde405a5e304a4 , < 764b683a6180fd72c931c13fea98d383506a3475 (git)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.18.57 , ≤ 6.18.* (semver)
Unaffected: 7.2.11 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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}



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