Riskcovery

CVE-2025-21736

nilfs2: fix possible int overflows in nilfs_fiemap()

State
Published
Severity
Not scored
Published
Feb 27, 2025
Updated
May 11, 2026
Reserved
Dec 29, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

nilfs2: fix possible int overflows in nilfs_fiemap()

Since nilfs_bmap_lookup_contig() in nilfs_fiemap() calculates its result by being prepared to go through potentially maxblocks == INT_MAX blocks, the value in n may experience an overflow caused by left shift of blkbits.

While it is extremely unlikely to occur, play it safe and cast right hand expression to wider type to mitigate the issue.

Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before 7649937987fed51ed09985da4019d50189fc534eAffected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before 58b1c6881081f5ddfb9a14dc241a74732c0f855cAffected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before 8f41df5fd4c11d26e929a85f7239799641f92da7Affected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before f3d80f34f58445355fa27b9579a449fb186aa64eAffected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before f2bd0f1ab47822fe5bd699c8458b896c4b2edea1Affected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before b9495a9109abc31d3170f7aad7d48aa64610a1a2Affected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before 250423300b4b0335918be187ef3cade248c06e6aAffected
  • 622daaff0a8975fb5c5b95f24f3234550ba32e92 to before 6438ef381c183444f7f9d1de18f22661cba1e946Affected
LinuxLinux
  • 2.6.38Affected
  • before 2.6.38Not affected
  • 5.4.291 through 5.4.*Not affected
  • 5.10.235 through 5.10.*Not affected
  • 5.15.179 through 5.15.*Not affected
  • 6.1.129 through 6.1.*Not affected
  • 6.6.78 through 6.6.*Not affected
  • 6.12.14 through 6.12.*Not affected
  • 6.13.3 through 6.13.*Not affected
  • 6.14 and laterNot affected

References

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