CVE-2026-46046: Linux vulnerability

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

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().

UnknownCVSS not scoredNot KEV-listedUpdatedOct 15, 2026, 01:20 UTC (UTC+00:00)

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2026-46046 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 27, 2026, 12:57 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

1ADP providers

12Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
May 13, 2026, 15:03 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
May 27, 2026, 12:57 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 15, 2026, 01:20 UTC (UTC+00:00)

ADP provider summaries

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/dd98a5603a212ea9c96c6982ccdbcc748fdb9a56CVE reference, Linux
https://git.kernel.org/stable/c/153ab2c52355fbebcae622db8e7b506492c73a29CVE reference, Linux
https://git.kernel.org/stable/c/b706d00206a9e82362a9633efbd8b5775650169bCVE reference, Linux
https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8CVE reference, Linux
https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920CVE reference, Linux
https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cfCVE reference, Linux
https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298CVE reference, Linux
https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708fCVE reference, Linux
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlCVE reference, siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-457936.htmlCVE reference, siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-784472.htmlCVE reference, siemens-SADP

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3, f737418b6de31c962c7192777ee4018906975383, cf9291a3449b04688b81e32621e88de8f4314b54, 362a90cecd36e8a5c415966d0b75b04a0270e4dd, eb59cc31b6ea076021d14b04e7faab1636b87d0e, c8e008b60492cf6fd31ef127aea6d02fd3d314cd, c8e008b60492cf6fd31ef127aea6d02fd3d314cd, c8e008b60492cf6fd31ef127aea6d02fd3d314cd, 6aff941cb0f7d0c897c3698ad2e30672709135e3, 3bc6317033f365ce578eb6039445fb66162722fd, 836e625b03a666cf93ff5be328c8cb30336db872, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 5.4.293, 6.13.12, 6.14.3unaffected

LinuxLinux6.15, 0, 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1affected

Weakness

CWE details

No CWE listed

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