USN-8661-1 linux-azure-5.15, linux-gcp, linux-gcp-fips, linux-hwe-5.15, linux-lowlatency-hwe-5.15 vulnerabilities

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. CVE-2025-275...

CVE-2026-74308

A flaw was found in the Linux kernel's ext4 filesystem. When the data=journal mount option is enabled, the ext4journalledwriteend function can incorrectly attempt to write inline data. This occurs if a prior attempt to convert inline data to an extent failed, leading to an inconsistent state. An...

CVE-2026-74358

A flaw was found in the ext4 filesystem component of the Linux kernel. On 64-bit systems, an incorrect mapping of wait/wake bits during fast commits could lead to unexpected behavior. This issue, if triggered, may result in system instability or data integrity problems...

Linux Distros Unpatched Vulnerability : CVE-2026-74358

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the...

USN-8631-4: Linux kernel (Azure CVM) vulnerabilities

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. CVE-2025-275...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099985)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099985 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where...

CVE-2026-74358

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the corresponding +32 offset. The fast-commit wait and wake paths...

CVE-2026-74307

In the Linux kernel, the following vulnerability has been resolved: ext4: validate donor file superblock early in EXT4IOCMOVEEXT Reject the EXT4IOCMOVEEXT ioctl early if the donor file does not belong to the same superblock as the original file. Currently, this validation is performed inside...

CVE-2026-74308

In the Linux kernel, the following vulnerability has been resolved: ext4: fix kernel BUG in ext4writeinlinedataend When the data=journal mount option is used, the ext4journalledwriteend function incorrectly calls ext4writeinlinedataend without checking if the EXT4STATEMAYINLINEDATA flag is still...

CVE-2026-72379

In the Linux kernel, the following vulnerability has been resolved: fs: refuse OTMPFILE creation with an unmapped fsuid or fsgid vfstmpfile never checked that the caller's fsuid and fsgid map into the filesystem. On an idmapped mount whose idmapping does not cover the caller's fsu,gid, the -tmpfi...

UBUNTU-CVE-2026-74308

In the Linux kernel, the following vulnerability has been resolved: ext4: fix kernel BUG in ext4writeinlinedataend When the data=journal mount option is used, the ext4journalledwriteend function incorrectly calls ext4writeinlinedataend without checking if the EXT4STATEMAYINLINEDATA flag is still...

CVE-2026-74358

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the corresponding +32 offset. The fast-commit wait and wake paths...

UBUNTU-CVE-2026-74358

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the corresponding +32 offset. The fast-commit wait and wake paths...

UBUNTU-CVE-2026-74307

In the Linux kernel, the following vulnerability has been resolved: ext4: validate donor file superblock early in EXT4IOCMOVEEXT Reject the EXT4IOCMOVEEXT ioctl early if the donor file does not belong to the same superblock as the original file. Currently, this validation is performed inside...

EUVD-2026-59505

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the corresponding +32 offset. The fast-commit wait and wake paths...

CVE-2026-74358 ext4: fix fast commit wait/wake bit mapping on 64-bit

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the corresponding +32 offset. The fast-commit wait and wake paths...

CVE-2026-74358 ext4: fix fast commit wait/wake bit mapping on 64-bit

In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of iflags, and ext4testinodestate applies the corresponding +32 offset. The fast-commit wait and wake paths...

CVE-2026-74358

CVE-2026-74358 concerns the Linux kernel ext4 fast-commit wait/wake bit mapping on 64-bit. The vulnerability arises because ext4 dynamic inode states live in the upper half of i_flags on 64-bit, and ext4_test_inode_state() applies a +32 offset. The fast-commit wait and wake paths previously used ...

EUVD-2026-59455

In the Linux kernel, the following vulnerability has been resolved: ext4: fix kernel BUG in ext4writeinlinedataend When the data=journal mount option is used, the ext4journalledwriteend function incorrectly calls ext4writeinlinedataend without checking if the EXT4STATEMAYINLINEDATA flag is still...

CVE-2026-74308

Summary: CVE-2026-74308 affects the Linux kernel ext4 in the data=journal scenario. The bug was that ext4_journalled_write_end() could call ext4_write_inline_data_end() without verifying EXT4_STATE_MAY_INLINE_DATA, if a prior inline data conversion failed. This could leave i_inline_size unexpande...