# CVE-2025-39912: linux: In the Linux kernel, the following vulnerability has been resolved: nfs/localio: restore creds before releasing page... CVE-2025-39912 is fixed in 23 products on 1 platform, first by DEBIAN-CVE-2025-39912, released October 1, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-39912 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: 0.0015 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 1, 2025 ## Description In the Linux kernel, the following vulnerability has been resolved: nfs/localio: restore creds before releasing pageio data Otherwise if the nfsd filecache code releases the nfsd_file immediately, it can trigger the BUG_ON(cred == current->cred) in __put_cred() when it puts the nfsd_file->nf_file->f-cred. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool6.12 amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel-livepatch-6.12.48-67.114 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12 amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-libbpf amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-libbpf-debuginfo amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-libbpf-devel amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-libbpf-static amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | linux Debian 13.5 (trixie) | 6.12.48-1 | [DEBIAN-CVE-2025-39912](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39912.md) | Oct 1, 2025 | | Linux | linux Debian 14 | 6.16.8-1 | [DEBIAN-CVE-2025-39912](https://patchblox.com/security/data/fix/linux/debian-cve-2025-39912.md) | Oct 1, 2025 | | Linux | perf6.12 amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.48-67.114.amzn2023 | [ALAS2023-2025-1227](https://patchblox.com/security/data/fix/linux/alas2023-2025-1227.md) | Oct 27, 2025 | --- Data as of 2026-11-09T07:25:28Z UTC. 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