ext4: xattr: fix null pointer deref in ext4_raw_inode()

Summary

CVECVE-2025-68820
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-13 16:16:04 UTC
Updated2026-07-14 13:18:01 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ext4: xattr: fix null pointer deref in ext4_raw_inode() If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED), iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all() lacks error checking, this will lead to a null pointer dereference in ext4_raw_inode(), called right after ext4_get_inode_loc(). Found by Linux Verification Center (linuxtesting.org) with SVACE.

Risk And Classification

EPSS: 0.001730000 probability, percentile 0.068840000 (date 2026-07-14)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 b72a3476f0c97d02f63a6e9fff127348d55436f6 git Not specified
CNA Linux Linux affected f737418b6de31c962c7192777ee4018906975383 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 git Not specified
CNA Linux Linux affected cf9291a3449b04688b81e32621e88de8f4314b54 190ad0f22ba49f1101182b80e3af50ca2ddfe72f git Not specified
CNA Linux Linux affected 362a90cecd36e8a5c415966d0b75b04a0270e4dd b5d942922182e82724b7152cb998f540132885ec git Not specified
CNA Linux Linux affected eb59cc31b6ea076021d14b04e7faab1636b87d0e 5b154e901fda2e98570b8f426a481f5740097dc2 git Not specified
CNA Linux Linux affected c8e008b60492cf6fd31ef127aea6d02fd3d314cd ce5f54c065a4a7cbb92787f4f140917112350142 git Not specified
CNA Linux Linux affected c8e008b60492cf6fd31ef127aea6d02fd3d314cd b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 git Not specified
CNA Linux Linux affected 6aff941cb0f7d0c897c3698ad2e30672709135e3 git Not specified
CNA Linux Linux affected 3bc6317033f365ce578eb6039445fb66162722fd git Not specified
CNA Linux Linux affected 836e625b03a666cf93ff5be328c8cb30336db872 git Not specified
CNA Linux Linux affected 5.10.237 5.10.248 semver Not specified
CNA Linux Linux affected 5.15.181 5.15.198 semver Not specified
CNA Linux Linux affected 6.1.135 6.1.160 semver Not specified
CNA Linux Linux affected 6.6.88 6.6.120 semver Not specified
CNA Linux Linux affected 6.12.24 6.12.64 semver Not specified
CNA Linux Linux affected 5.4.293 5.5 semver Not specified
CNA Linux Linux affected 6.13.12 6.14 semver Not specified
CNA Linux Linux affected 6.14.3 6.15 semver Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 5.10.248 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.198 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.160 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.120 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.64 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.3 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b5d942922182e82724b7152cb998f540132885ec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b72a3476f0c97d02f63a6e9fff127348d55436f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/190ad0f22ba49f1101182b80e3af50ca2ddfe72f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/ce5f54c065a4a7cbb92787f4f140917112350142 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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