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CVE-2025-40101btrfs: fix memory leaks when rejecting a non SINGLE data profile without an RST

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix memory leaks when rejecting a non SINGLE data profile without an RST At the end of btrfs_load_block_group_zone_info() the first thing we do is to ensure that if the mapping type is not a SINGLE one and there is no RAID stripe tree, then we return early with an error. Doing that, though, prevents the code from running the last calls from this function which are about freeing memory allocated during its run. Hence, in this case, instead of returning early, we set the ret value and fall through the rest of the cleanup code.

Timeline

  1. ID reserved

    By Linux

  2. · 7 months later

    Published

  3. · 7 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.

EPSS (exploitation in 30 days)
0.20% · top 91% of all CVEs (14 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected 5906333cc4af7b3fdb8cfff1cb3e8e579bd13174 – < 187333e6d484c6630286bfdd07c79d6815a63887
    • affected 5906333cc4af7b3fdb8cfff1cb3e8e579bd13174 – < 602701d00439e113331ee9c1283e95afdcb8849d
    • affected 5906333cc4af7b3fdb8cfff1cb3e8e579bd13174 – < fec9b9d3ced39f16be8d7afdf81f4dd2653da319
    • affected 6ffeca99bf6e84800133d21afd41c79d2f002db7
    • affected 6.7.11 – < 6.8

  • Linux · Linux

    • affected 6.8
    • unaffected < 6.8
    • unaffected 6.12.55 – ≤ 6.12.*
    • unaffected 6.17.5 – ≤ 6.17.*
    • unaffected 6.18 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .