CVE-2025-68820

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 < b72a3476f0c97d02f63a6e9fff127348d55436f6affected
LinuxLinuxf737418b6de31c962c7192777ee4018906975383 < 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3affected
LinuxLinuxcf9291a3449b04688b81e32621e88de8f4314b54 < 190ad0f22ba49f1101182b80e3af50ca2ddfe72faffected
LinuxLinux362a90cecd36e8a5c415966d0b75b04a0270e4dd < b5d942922182e82724b7152cb998f540132885ecaffected
LinuxLinuxeb59cc31b6ea076021d14b04e7faab1636b87d0e < 5b154e901fda2e98570b8f426a481f5740097dc2affected
LinuxLinuxc8e008b60492cf6fd31ef127aea6d02fd3d314cd < ce5f54c065a4a7cbb92787f4f140917112350142affected
LinuxLinuxc8e008b60492cf6fd31ef127aea6d02fd3d314cd < b97cb7d6a051aa6ebd57906df0e26e9e36c26d14affected
LinuxLinux6aff941cb0f7d0c897c3698ad2e30672709135e3affected
LinuxLinux3bc6317033f365ce578eb6039445fb66162722fdaffected
LinuxLinux836e625b03a666cf93ff5be328c8cb30336db872affected
LinuxLinux5.10.237 < 5.10.248affected
LinuxLinux5.15.181 < 5.15.198affected
LinuxLinux6.1.135 < 6.1.160affected
LinuxLinux6.6.88 < 6.6.120affected
LinuxLinux6.12.24 < 6.12.64affected
LinuxLinux5.4.293 < 5.5affected
LinuxLinux6.13.12 < 6.14affected
LinuxLinux6.14.3 < 6.15affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux5.10.248 <= 5.10.*unaffected
LinuxLinux5.15.198 <= 5.15.*unaffected
LinuxLinux6.1.160 <= 6.1.*unaffected
LinuxLinux6.6.120 <= 6.6.*unaffected
LinuxLinux6.12.64 <= 6.12.*unaffected
LinuxLinux6.18.3 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References