Not yet scoredPublished Jan 13, 2026

CVE-2025-68820ext4: xattr: fix null pointer deref in ext4_raw_inode()

Updated under an hour ago (Oct 28, 2026, 8:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In 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.

CVSS: Not yet scored
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 before b72a3476f0c97d02f63a6e9fff127348d55436f6; from f737418b6de31c962c7192777ee4018906975383 before 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3; from cf9291a3449b04688b81e32621e88de8f4314b54 before 190ad0f22ba49f1101182b80e3af50ca2ddfe72f; from 362a90cecd36e8a5c415966d0b75b04a0270e4dd before b5d942922182e82724b7152cb998f540132885ec; from eb59cc31b6ea076021d14b04e7faab1636b87d0e before 5b154e901fda2e98570b8f426a481f5740097dc2; from c8e008b60492cf6fd31ef127aea6d02fd3d314cd before ce5f54c065a4a7cbb92787f4f140917112350142; from c8e008b60492cf6fd31ef127aea6d02fd3d314cd before b97cb7d6a051aa6ebd57906df0e26e9e36c26d14; 6aff941cb0f7d0c897c3698ad2e30672709135e3; and 10 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP

References

References

https://git.kernel.org/stable/c/b72a3476f0c97d02f63a6e9fff127348d55436f6
https://git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3
https://git.kernel.org/stable/c/190ad0f22ba49f1101182b80e3af50ca2ddfe72f
https://git.kernel.org/stable/c/b5d942922182e82724b7152cb998f540132885ec
https://git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2
https://git.kernel.org/stable/c/ce5f54c065a4a7cbb92787f4f140917112350142
https://git.kernel.org/stable/c/b97cb7d6a051aa6ebd57906df0e26e9e36c26d14
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.