# CVE-2023-54062: linux: In the Linux kernel, the following vulnerability has been resolved:  ext4: fix invalid free tracking in ext4_xattr_mo...

CVE-2023-54062 is fixed in 76 products on 1 platform, first by ALAS2023-2023-184, released May 25, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-54062
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 25, 2023

## Description

In the Linux kernel, the following vulnerability has been resolved:  ext4: fix invalid free tracking in ext4_xattr_move_to_block()  In ext4_xattr_move_to_block(), the value of the extended attribute which we need to move to an external block may be allocated by kvmalloc() if the value is stored in an external inode.  So at the end of the function the code tried to check if this was the case by testing entry->e_value_inum.  However, at this point, the pointer to the xattr entry is no longer valid, because it was removed from the original location where it had been stored.  So we could end up calling kvfree() on a pointer which was not allocated by kvmalloc(); or we could also potentially leak memory by not freeing the buffer when it should be freed.  Fix this by storing whether it should be freed in a separate variable.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 9 | 0:7.3.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | bpftool amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | bpftool-debuginfo amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-64k RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-abi-stablelists RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-uki-virt RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debuginfo amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-devel amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-doc RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-headers amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-libbpf amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-libbpf-devel amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-libbpf-static amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-livepatch-6.1.29-47.49 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-kvm RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-kvm RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-tools RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-tools amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-tools-debuginfo amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-tools-devel amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | kernel-tools-libs RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-tools-libs-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-uki-virt RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | libperf RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-54062](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54062.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-54062](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54062.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-54062](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54062.md) | Dec 24, 2025 |
| Linux | perf RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | perf amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | perf-debuginfo amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | python3-perf RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | python3-perf amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | python3-perf-debuginfo amzn 2023 | 6.1.29-47.49.amzn2023 | [ALAS2023-2023-184](https://patchblox.com/security/data/fix/linux/alas2023-2023-184.md) | May 25, 2023 |
| Linux | rtla RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | rv RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |

---

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