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Vulnerabilities

Vulnerability · CVE-2026-99098

CVE-2026-99098: dm-integrity: fix buffer overflow in inline mode with large tag size

Published Oct 26, 2026 · catalog updated Oct 28, 2026 · Linux Linux Kernel

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-99098. EPSS is 0.18%. Act only if a listed version of Linux Linux Kernel is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Advisory link
Affected products
Linux Kernel · linux kernel · package unmanaged

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Linux Kernel6.11.0 → 6.12.114; 6.13.0 → 6.18.57; 6.19.0 → 7.2.11
  • linux kernelversion unspecified
  • package unmanagedversion unspecified

How to fix CVE-2026-99098

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-99098. EPSS is 0.18%. Act only if a listed version of Linux Linux Kernel is installed.

Which versions are affected?

Compare what you have installed with Kernel 6.11.0 → 6.12.114; 6.13.0 → 6.18.57; 6.19.0 → 7.2.11. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 26, 2026 · Linux Kernel CVE

    Detected

    From: Greg Kroah-Hartman Description =========== 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 t

  2. Oct 28, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    Kernel fixed in 6.12.114; Kernel fixed in 6.18.57; Kernel fixed in 7.2.11

  3. Oct 28, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    Kernel fixed in 6.12.114; 6.13.0

  4. Oct 28, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-99098

    Official CVE identifier

    cve.org
  • Linux Kernel CVEVendor advisoryCVE-2026-99098

    From: Greg Kroah-Hartman Description =========== 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 eac

    git.kernel.org
  • OpenSSF OSV / OSV ScannerPackage advisoryCVE-2026-99098

    dm-integrity: fix buffer overflow in inline mode with large tag size

    osv.dev
  • Snyk Vulnerability DatabasePackage advisorySNYK-UNMANAGED-TORVALDSLINUX-21735742

    Buffer Overflow

    security.snyk.io

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Snyk Vulnerability DatabaseOct 29, 2026
  • OpenSSF OSV / OSV ScannerOct 28, 2026
  • Linux Kernel CVEOct 28, 2026
  • CVE.orgOct 27, 2026