Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not set EXT4GETBLOCKSCONVERT when splitting an unwritten extent before submitting I/O. When allocating blocks during within-EOF DIO and with dioreadnolock enabled, EXT4GETBLOCKSPREIO was set to split an existing unwritte...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: Fixed a bug in extent parsing when ehentries == 0 and ehdepth 0. When traversing inode extents, the ext4extbinsearchidx function assumes that the extent header has been validated previously. However, there are no checks to...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: In the send operation, it is necessary to check for inline extents within the rangeisholeinparent function. Before accessing the diskbytenr field of a file extent item, we need to check whether we are dealing with an inlin...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: pNFS: Fixed an issue where uninitialized pointers were dereferenced. The error occurs during the third attempt to encode extents. When the function exttreepreparecommit reallocates a larger buffer to retry encoding extents, th...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid use-after-free in ext4extshowleaf In ext4findextent, the path may be freed by an error or reallocated. Therefore, using a previously saved ppath may have already been freed, thereby potentially causing a use-after-fre...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Fixed a double-free of blocks due to incorrect movedlen values during extent movements. In ext4moveextents, movedlen is updated only when all movements are successfully executed. It also discards preallocations of originode...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: hfsplus: prevented corruption during the shrinking of truncate operations. I believe there are some issues introduced by commit 31651c607151 “hfsplus: avoided deadlock during file truncation”. HFS+ uses extent records, which alwa...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not call BUGON when encountering ENOMEM during the dropping of file extent items within a given range. If -ENOMEM occurs while dropping file extent items within a specified range, at btrfsDropExtents, the transaction ma...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents. When merging very long extents, we try to assign as much length as possible to the first extent. However, this is unnecessarily complicated and not really worth the effort. Moreover,...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Detecting invalid INLINEDATA + EXTENTS flag combinations Syzbot reported a bug in ext4escacheextent when opening a Verity file on a corrupted ext4 file system that was mounted without a journal. The issue arises when the fi...

CVE-2026-80530 xfs: fix exchange-range reflink flag clearing issue with INO1_WRITTEN

In the Linux kernel, the following vulnerability has been resolved: xfs: fix exchange-range reflink flag clearing issue with INO1WRITTEN When exchanging two full-file ranges, xmicanexchangereflinkflags can move the reflink inode flag from the file that currently has it to the other file, as long ...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Ensure that the correct amount of memory is released during direct IO write operations. Running generic/406 causes the following warning in btrfsdestroy inode: this indicates that there are still outstanding extents...

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...

SUSE CVE-2026-74723

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject inline extents without valid headers BUG For a crafted btrfs image, the following KASAN can be triggered when reading an inline lzo compressed file extent: BUG: KASAN: slab-out-of-bounds in...

AZL-97308 CVE-2026-74723 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject inline extents without valid headers BUG For a crafted btrfs image, the following KASAN can be triggered when reading an inline lzo compressed file extent: BUG: KASAN: slab-out-of-bounds in...

UBUNTU-CVE-2026-74723

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject inline extents without valid headers BUG For a crafted btrfs image, the following KASAN can be triggered when reading an inline lzo compressed file extent: BUG: KASAN: slab-out-of-bounds in...

CVE-2026-74723 btrfs: lzo: reject inline extents without valid headers

In the Linux kernel, the following vulnerability has been resolved: btrfs: lzo: reject inline extents without valid headers BUG For a crafted btrfs image, the following KASAN can be triggered when reading an inline lzo compressed file extent: BUG: KASAN: slab-out-of-bounds in...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102065)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102065 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: send: check for inline extents in rangeisholeinparent Before accessing the diskbytenr fiel...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099948)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099948 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: don't cache extent during splitting extent Caching extents during the splitting process is...

CVE-2026-74318

CVE-2026-74318 concerns the Linux kernel, specifically a deadlock in btrfs when cloning an inline extent while using the flushoncommit option. The issue occurred during reflink/transaction commit, where copying inline extent data to a destination file could deadlock if the destination offset was ...