md/md-bitmap: fix GPF in bitmap_get_stats()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-38451
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-07-25 16:15:30 UTC
Updated2026-05-12 13:16:49 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: md/md-bitmap: fix GPF in bitmap_get_stats() The commit message of commit 6ec1f0239485 ("md/md-bitmap: fix stats collection for external bitmaps") states: Remove the external bitmap check as the statistics should be available regardless of bitmap storage location. Return -EINVAL only for invalid bitmap with no storage (neither in superblock nor in external file). But, the code does not adhere to the above, as it does only check for a valid super-block for "internal" bitmaps. Hence, we observe: Oops: GPF, probably for non-canonical address 0x1cd66f1f40000028 RIP: 0010:bitmap_get_stats+0x45/0xd0 Call Trace: seq_read_iter+0x2b9/0x46a seq_read+0x12f/0x180 proc_reg_read+0x57/0xb0 vfs_read+0xf6/0x380 ksys_read+0x6d/0xf0 do_syscall_64+0x8c/0x1b0 entry_SYSCALL_64_after_hwframe+0x76/0x7e We fix this by checking the existence of a super-block for both the internal and external case.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 065f4b1cd41d03702426af44193894b925607073 a23b16ba3274961494f5ad236345d238364349ff git Not specified
CNA Linux Linux affected 0b5390aeaa85eb2f15e0e2ea0731c0995285db5e 3d82a729530bd2110ba66e4a1f73461c776edec2 git Not specified
CNA Linux Linux affected eeeba7f43ae27835718a5f5ad6552a8983e75201 3e0542701b37aa25b025d8531583458e4f014c2e git Not specified
CNA Linux Linux affected 6ec1f0239485028445d213d91cfee5242f3211ba a18f9b08c70e10ea3a897058fee8a4f3b4c146ec git Not specified
CNA Linux Linux affected 6ec1f0239485028445d213d91cfee5242f3211ba c17fb542dbd1db745c9feac15617056506dd7195 git Not specified
CNA Linux Linux affected 896a6fbefc9050cf940ed57947eda6dc23aa58b0 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.1.146 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.99 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.39 6.12.* semver Not specified
CNA Linux Linux unaffected 6.15.7 6.15.* semver Not specified
CNA Linux Linux unaffected 6.16 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/a18f9b08c70e10ea3a897058fee8a4f3b4c146ec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/3e0542701b37aa25b025d8531583458e4f014c2e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c17fb542dbd1db745c9feac15617056506dd7195 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a23b16ba3274961494f5ad236345d238364349ff 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3d82a729530bd2110ba66e4a1f73461c776edec2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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