Vulnerability Details CVE-2025-38451
In 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.8%
CVSS Severity
CVSS v3 Score 5.5
References
- https://git.kernel.org/stable/c/3d82a729530bd2110ba66e4a1f73461c776edec2
- https://git.kernel.org/stable/c/3e0542701b37aa25b025d8531583458e4f014c2e
- https://git.kernel.org/stable/c/a18f9b08c70e10ea3a897058fee8a4f3b4c146ec
- https://git.kernel.org/stable/c/a23b16ba3274961494f5ad236345d238364349ff
- https://git.kernel.org/stable/c/c17fb542dbd1db745c9feac15617056506dd7195
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Products affected by CVE-2025-38451
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:linux:linux_kernel:6.1.135
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cpe:2.3:o:linux:linux_kernel:6.1.136
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cpe:2.3:o:linux:linux_kernel:6.1.137
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cpe:2.3:o:linux:linux_kernel:6.1.138
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cpe:2.3:o:linux:linux_kernel:6.1.139
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cpe:2.3:o:linux:linux_kernel:6.1.140
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cpe:2.3:o:linux:linux_kernel:6.1.141
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cpe:2.3:o:linux:linux_kernel:6.1.142
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cpe:2.3:o:linux:linux_kernel:6.1.143
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cpe:2.3:o:linux:linux_kernel:6.1.144
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cpe:2.3:o:linux:linux_kernel:6.1.145
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cpe:2.3:o:linux:linux_kernel:6.12.25
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cpe:2.3:o:linux:linux_kernel:6.12.26
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cpe:2.3:o:linux:linux_kernel:6.12.27
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cpe:2.3:o:linux:linux_kernel:6.12.28
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cpe:2.3:o:linux:linux_kernel:6.12.29
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cpe:2.3:o:linux:linux_kernel:6.12.30
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cpe:2.3:o:linux:linux_kernel:6.12.31
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cpe:2.3:o:linux:linux_kernel:6.12.32
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cpe:2.3:o:linux:linux_kernel:6.12.33
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cpe:2.3:o:linux:linux_kernel:6.12.34
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cpe:2.3:o:linux:linux_kernel:6.12.35
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cpe:2.3:o:linux:linux_kernel:6.12.36
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cpe:2.3:o:linux:linux_kernel:6.12.37
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cpe:2.3:o:linux:linux_kernel:6.12.38
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cpe:2.3:o:linux:linux_kernel:6.14.10
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cpe:2.3:o:linux:linux_kernel:6.14.11
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cpe:2.3:o:linux:linux_kernel:6.14.4
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cpe:2.3:o:linux:linux_kernel:6.14.5
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cpe:2.3:o:linux:linux_kernel:6.14.6
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cpe:2.3:o:linux:linux_kernel:6.14.7
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cpe:2.3:o:linux:linux_kernel:6.14.8
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cpe:2.3:o:linux:linux_kernel:6.14.9
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cpe:2.3:o:linux:linux_kernel:6.15
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cpe:2.3:o:linux:linux_kernel:6.15.1
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cpe:2.3:o:linux:linux_kernel:6.15.2
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cpe:2.3:o:linux:linux_kernel:6.15.3
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cpe:2.3:o:linux:linux_kernel:6.15.4
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cpe:2.3:o:linux:linux_kernel:6.15.5
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cpe:2.3:o:linux:linux_kernel:6.15.6
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cpe:2.3:o:linux:linux_kernel:6.16
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cpe:2.3:o:linux:linux_kernel:6.6.88
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cpe:2.3:o:linux:linux_kernel:6.6.89
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cpe:2.3:o:linux:linux_kernel:6.6.90
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cpe:2.3:o:linux:linux_kernel:6.6.91
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cpe:2.3:o:linux:linux_kernel:6.6.92
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cpe:2.3:o:linux:linux_kernel:6.6.93
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cpe:2.3:o:linux:linux_kernel:6.6.94
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cpe:2.3:o:linux:linux_kernel:6.6.95
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cpe:2.3:o:linux:linux_kernel:6.6.96
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cpe:2.3:o:linux:linux_kernel:6.6.97
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cpe:2.3:o:linux:linux_kernel:6.6.98