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CVE-2026-46046ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse().

Timeline

  1. ID reserved

    By Linux

  2. · 14 days later

    Published

  3. · 6 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

CVSS scores of CVE-2026-46046, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.13% · top 97% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected 76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 – < dd98a5603a212ea9c96c6982ccdbcc748fdb9a56
    • affected f737418b6de31c962c7192777ee4018906975383 – < 153ab2c52355fbebcae622db8e7b506492c73a29
    • affected cf9291a3449b04688b81e32621e88de8f4314b54 – < b706d00206a9e82362a9633efbd8b5775650169b
    • affected 362a90cecd36e8a5c415966d0b75b04a0270e4dd – < 1bc1107a3a403a6d440673ed6666f7b07ef868a8
    • affected eb59cc31b6ea076021d14b04e7faab1636b87d0e – < 097227f1ffe1a85bc3c359f81c71e3d40e06e920
    • affected c8e008b60492cf6fd31ef127aea6d02fd3d314cd – < 1e6b0a69bf2c9c819255c7566e4355536d81d9cf
    • affected c8e008b60492cf6fd31ef127aea6d02fd3d314cd – < f072906688933bf47fabbaf63560be03357c8298
    • affected c8e008b60492cf6fd31ef127aea6d02fd3d314cd – < 77d059519382bd66283e6a4e83ee186e87e7708f
    • affected 6aff941cb0f7d0c897c3698ad2e30672709135e3
    • affected 3bc6317033f365ce578eb6039445fb66162722fd
    • affected 836e625b03a666cf93ff5be328c8cb30336db872
    • affected 5.10.237 – < 5.10.258
    • affected 5.15.181 – < 5.15.209
    • affected 6.1.135 – < 6.1.175
    • affected 6.6.88 – < 6.6.140
    • affected 6.12.24 – < 6.12.86
    • affected 5.4.293 – < 5.5
    • affected 6.13.12 – < 6.14
    • affected 6.14.3 – < 6.15

  • Linux · Linux

    • affected 6.15
    • unaffected < 6.15
    • unaffected 5.10.258 – ≤ 5.10.*
    • unaffected 5.15.209 – ≤ 5.15.*
    • unaffected 6.1.175 – ≤ 6.1.*
    • unaffected 6.6.140 – ≤ 6.6.*
    • unaffected 6.12.86 – ≤ 6.12.*
    • unaffected 6.18.27 – ≤ 6.18.*
    • unaffected 7.0.4 – ≤ 7.0.*
    • unaffected 7.1 – ≤ *

References

References11

Sources

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

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Record last updated .