Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100706)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100706 advisory. In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to regioncount overflow The local variable regioncount in...

CVE-2026-74392

In the Linux kernel, the following vulnerability has been resolved: dm: limit target bio polling to one shot dmpollbio is the -pollbio callback for a stacked dm device. The caller only knows about the dm queue, so it may decide to do a spinning poll if it thinks a single queue is being polled...

UBUNTU-CVE-2026-72316

In the Linux kernel, the following vulnerability has been resolved: dm era: fix NULL pointer dereference in metadataopen metadataopen returns NULL when kzallocobj fails, but the caller eractr only checks ISERRmd. Since ISERRNULL returns false, the NULL pointer is treated as a valid result and lat...

CVE-2026-72108

In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...

CVE-2026-72102

In the Linux kernel, the following vulnerability has been resolved: dmearlycreate: fix freeing used table on dmresume failure If dmresume fails, the kernel attempts to free table with dmtabledestroy, but the table was already instantiated with dmswaptable. This commit skips the call to...

CVE-2026-72106

In the Linux kernel, the following vulnerability has been resolved: dm-ioctl: fix a possible overflow in listversiongetinfo sizeoftt-version is 12 bytes, but the code writes 16 bytes into the output buffer - info-vers-version0, info-vers-version1, info-vers-version2 and info-vers-next. This can...

CVE-2026-72103

In the Linux kernel, the following vulnerability has been resolved: dm: avoid leaking the caller's thread keyring via the table device file The refactoring in commit a28d893eb327 "md: port block device access to file" accidentally causes the caller's thread keyring to be kept alive long beyond th...

UBUNTU-CVE-2026-72102

In the Linux kernel, the following vulnerability has been resolved: dmearlycreate: fix freeing used table on dmresume failure If dmresume fails, the kernel attempts to free table with dmtabledestroy, but the table was already instantiated with dmswaptable. This commit skips the call to...

CVE-2026-72103

In the Linux kernel, the following vulnerability has been resolved: dm: avoid leaking the caller's thread keyring via the table device file The refactoring in commit a28d893eb327 "md: port block device access to file" accidentally causes the caller's thread keyring to be kept alive long beyond th...

UBUNTU-CVE-2026-72108

In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...

UBUNTU-CVE-2026-72103

In the Linux kernel, the following vulnerability has been resolved: dm: avoid leaking the caller's thread keyring via the table device file The refactoring in commit a28d893eb327 "md: port block device access to file" accidentally causes the caller's thread keyring to be kept alive long beyond th...

CVE-2026-72108

In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...

CVE-2026-72102

In the Linux kernel, the following vulnerability has been resolved: dmearlycreate: fix freeing used table on dmresume failure If dmresume fails, the kernel attempts to free table with dmtabledestroy, but the table was already instantiated with dmswaptable. This commit skips the call to...

CVE-2026-74392 dm: limit target bio polling to one shot

In the Linux kernel, the following vulnerability has been resolved: dm: limit target bio polling to one shot dmpollbio is the -pollbio callback for a stacked dm device. The caller only knows about the dm queue, so it may decide to do a spinning poll if it thinks a single queue is being polled...

CVE-2026-74392 dm: limit target bio polling to one shot

In the Linux kernel, the following vulnerability has been resolved: dm: limit target bio polling to one shot dmpollbio is the -pollbio callback for a stacked dm device. The caller only knows about the dm queue, so it may decide to do a spinning poll if it thinks a single queue is being polled...

CVE-2026-74392

Summary of CVE-2026-74392 (Linux kernel, device-mapper): The issue involves the dm_poll_bio() callback used by stacked dm devices. The caller only knows about the dm queue and could initiate spinning polls, passing flags unchanged to the mapped clone, which may cause blk_mq_poll() to spin on a ta...

CVE-2026-72316 dm era: fix NULL pointer dereference in metadata_open()

In the Linux kernel, the following vulnerability has been resolved: dm era: fix NULL pointer dereference in metadataopen metadataopen returns NULL when kzallocobj fails, but the caller eractr only checks ISERRmd. Since ISERRNULL returns false, the NULL pointer is treated as a valid result and lat...

CVE-2026-72316

In the Linux kernel vulnerability CVE-2026-72316, the metadata_open() path used by device-mapper metadata handling returns NULL on kzalloc_obj() failure, but era_ctr() only checks IS_ERR(md). Since IS_ERR(NULL) is false, a NULL is treated as valid and later dereferenced (era->md). The fix is t...

CVE-2026-72108 dm thin metadata: fix metadata snapshot consistency on commit failure

In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...

EUVD-2026-59066

In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...