# CVE-2026-98941: linux: In the Linux kernel, the following vulnerability has been resolved:  ext4: don't enable large folios on encrypted ino...

CVE-2026-98941 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98941 (version 7.2.10-1), released October 24, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-98941
- Priority: High
- CVSS: 7.0 (high)
- EPSS: 0.0014
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  ext4: don't enable large folios on encrypted inodes  Commit 709f0f1f1bf5 ("ext4: add checks for large folio incompatibilities when BS > PS") disables large folios at mount time if the "encrypt" feature is set. However, enabling that feature on a mounted filesystem circumvents that check, and writing encrypted data results in a crash:    BUG: kernel NULL pointer dereference, address: 0000000000000028   Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work   RIP: 0010:ext4_finish_bio+0xf7/0x3e0   Call Trace:    ext4_release_io_end+0x51/0x110    ext4_end_io_end+0x4c/0xe0    ext4_end_io_rsv_work+0xb3/0x100  Fix this by disabling large folios on encrypted inodes, as is already done for inodes that use data journaling.  This affects all kernels between v6.19 and v7.2, but it is not needed in v7.3, where the code was significantly refactored.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.10-1 | [DEBIAN-CVE-2026-98941](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98941.md) | Oct 24, 2026 |

---

Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.