5.5

CVE-2025-38451: md/md-bitmap: fix GPF in bitmap_get_stats()

Modified
AliasesUBUNTU-CVE-2025-38451DEBIAN-CVE-2025-38451
Published 25-07-2025Last modified 15-10-2026

Vulnerability summary

CVE-2025-38451 is a medium (CVSS 5.5) vulnerability in debian debian_linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.18%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 11
DLA-4328-1DSA-5973-1DSA-5975-1MGASA-2025-0218MGASA-2025-0219OPENSUSE-SU-2025:20081-1

Timeline

  1. 25-07-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu90 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Debian2 products
  • linux< 6.1.147-1 | < 6.12.41-1 | < 6.16.3-1
  • debian_linuxEOL11.0
Linux2 products
  • linux≥ 065f4b1cd41d03702426af44193894b925607073, < a23b16ba3274961494f5ad236345d238364349ff | ≥ 0b5390aeaa85eb2f15e0e2ea0731c0995285db5e, < 3d82a729530bd2110ba66e4a1f73461c776edec2 | ≥ eeeba7f43ae27835718a5f5ad6552a8983e75201, < 3e0542701b37aa25b025d8531583458e4f014c2e | ≥ 6ec1f0239485028445d213d91cfee5242f3211ba, < a18f9b08c70e10ea3a897058fee8a4f3b4c146ec | ≥ 6ec1f0239485028445d213d91cfee5242f3211ba, < c17fb542dbd1db745c9feac15617056506dd7195 | 896a6fbefc9050cf940ed57947eda6dc23aa58b0 | ≥ 6.1.135, < 6.1.146 | ≥ 6.6.88, < 6.6.99 | ≥ 6.12.25, < 6.12.39 | ≥ 6.14.4, < 6.15 | 6.15
  • linux_kernelEOL≥ 6.1.135, < 6.1.146 | ≥ 6.6.88, < 6.6.99 | ≥ 6.12.25, < 6.12.39 | ≥ 6.14.4, < 6.15 | ≥ 6.15.1, < 6.15.7 | 6.15 | 6.15:rc3 | 6.15:rc4 | 6.15:rc5 | 6.15:rc6 | 6.15:rc7 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4 | 6.16:rc5

3 vendors · 94 products

References

17 links
Show all 17 references