Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed an issue where the extent map was used after free, when adding pages to compressed Bio data structures. In the function addrabiopages, we access the extent map to calculate ‘addsize’. After dropping the reference to...

CVE-2026-68442

A flaw was found in the btrfs filesystem component of the Linux kernel. When an extent map is split, a flag EXTENTFLAGLOGGING is incorrectly propagated to the new split maps. This issue occurs because the flag clearing operation was applied to the wrong variable during the splitting process...

CVE-2026-68442

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

DEBIAN-CVE-2026-68442

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

CVE-2026-68442

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

CVE-2026-68442 btrfs: don't propagate EXTENT_FLAG_LOGGING to split extent maps

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

CVE-2026-68442 btrfs: don't propagate EXTENT_FLAG_LOGGING to split extent maps

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

CVE-2026-68442

CVE-2026-68442 describes a Linux kernel btrfs bug where splitting extent maps incorrectly propagates EXTENT_FLAG_LOGGING to new split maps. The local flags copy was used for splits, while a later change cleared the flag on em->flags, so a split map being logged could be freed with the flag sti...

CVE-2026-68442

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

EUVD-2026-57050

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

CVE-2026-68442

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's flags through a local 'flags' variable. Commit f86f7a75e2fb "btrfs: us...

Linux Distros Unpatched Vulnerability : CVE-2026-68442

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: don't propagate EXTENTFLAGLOGGING to split extent maps When btrfsdropextentmaprange splits an extent map, the new split maps inherit the original map's...

Astra Linux – Vulnerability in grub2

An integer overflow flaw was discovered in the BFS file system driver within grub2. When reading a file using an indirect extent map, grub2 fails to validate the number of extent entries to be read. A maliciously crafted or corrupted BFS file system may cause an integer overflow during file...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not drop the extentmap for free space inode on a write error While running the CI for an unrelated change, I encountered the following panic: with generic/648 on btrfsholesspacecache. Assertion failed: blockstart !=...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed incorrect splitting in btrfsdropextentmaprange. In production, we encountered various WARNON messages in the extentmap code, specifically in btrfsdropextentmaprange, when we had to call addextentmapping for our secon...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007432)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007432 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: don't drop extentmap for free space inode on write error While running the CI for an...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000870)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000870 advisory. The xfsbuffind function in fs/xfs/xfsbuf.c in the Linux kernel before 3.7.6 does not validate block numbers, which allows local users to cause a denial of service NU...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002201)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002201 advisory. The xfsbuffind function in fs/xfs/xfsbuf.c in the Linux kernel before 3.7.6 does not validate block numbers, which allows local users to cause a denial of service NU...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001978)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001978 advisory. The xfsbuffind function in fs/xfs/xfsbuf.c in the Linux kernel before 3.7.6 does not validate block numbers, which allows local users to cause a denial of service NU...

SUSE CVE-2023-54121

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix incorrect splitting in btrfsdropextentmaprange In production we were seeing a variety of WARNON's in the extentmap code, specifically in btrfsdropextentmaprange when we have to call addextentmapping for our second spli...