CVE-2026-53210

A flaw was found in the Linux kernel's Trusted Execution Environment TEE subsystem. A shared memory shm leak occurs in the registershmhelper function when TEEIOCSHMREGISTER is called with a zero-length shared memory registration. This can be triggered by a local attacker, potentially leading to a...

CVE-2026-53250

Linux kernel vulnerability CVE-2026-53250 in the xsk path (xsk_skb_metadata) allowed a race between reads of csum_start and csum_offset from shared UMEM memory, letting a malicious userspace overwrite values between validation and skb assignment. The fix caches csum_start and csum_offset in local...

CVE-2026-53210

In the Linux kernel, CVE-2026-53210 fixes a shm leak in register_shm_helper() within the TEE SHM path. The function allocates shm before calling iov_iter_npages(); if iov_iter_npages() returns 0, it jumps to err_ctx_put and leaks the allocated shm. The issue could be triggered by TEE_IOC_SHM_REGI...

EUVD-2026-39301

In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in registershmhelper registershmhelper allocates shm before calling ioviternpages. If ioviternpages returns 0, the function jumps to errctxput and leaks shm. This can be triggered by TEEIOCSHMREGISTER with...

CVE-2026-53210

In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in registershmhelper registershmhelper allocates shm before calling ioviternpages. If ioviternpages returns 0, the function jumps to errctxput and leaks shm. This can be triggered by TEEIOCSHMREGISTER with...

CVE-2026-52930

A flaw was found in the Linux kernel's inter-process communication IPC shared memory shm component. A synchronization issue exists where orphaned shared memory segments might be incorrectly destroyed while still in use due to a lack of serialization between cleanup and attachment updates. This...

CVE-2026-52941

A flaw was found in the Linux kernel's net/smc module. An unprivileged local user could trigger a null pointer dereference by performing sendmsg or recvmsg operations on an SMC-D Shared Memory Communications - Direct socket while the smcmsgevent tracepoint is enabled. This can lead to a general...

UBUNTU-CVE-2026-52930

In the Linux kernel, the following vulnerability has been resolved: ipc/shm: serialize orphan cleanup with shmnattch updates shmdestroyorphaned walks the shm idr under shmidsns.rwsem, but that does not serialize all fields tested by shmmaydestroy. In particular, shmnattch is updated while holding...

EUVD-2026-38711

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

EUVD-2026-38700

In the Linux kernel, the following vulnerability has been resolved: ipc/shm: serialize orphan cleanup with shmnattch updates shmdestroyorphaned walks the shm idr under shmidsns.rwsem, but that does not serialize all fields tested by shmmaydestroy. In particular, shmnattch is updated while holding...

CVE-2026-52930

In the Linux kernel, the following vulnerability has been resolved: ipc/shm: serialize orphan cleanup with shmnattch updates shmdestroyorphaned walks the shm idr under shmidsns.rwsem, but that does not serialize all fields tested by shmmaydestroy. In particular, shmnattch is updated while holding...

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

In the Linux kernel, the following vulnerability has been resolved: net/smc: Fixed an illegal access to rmbdesc during SMC-D connection dumping. A crash was detected when dumping SMC-D connections. This issue can be reproduced by performing the following steps: 1. Run the nginx/wrk test: smcrun...

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

In the Linux kernel, the following vulnerability has been resolved: tee: Fix NULL pointer dereference in teeshmput teeshmput has a NULL pointer dereference: opteedisableshmcache shm = regpairtoptr...; // shm may return NULL teeshmfreeshm; teeshmputshm; // results in a crash Add a check in teeshmp...

Astra Linux – Vulnerability in PHP 7.3

In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25, and 8.0.x below 8.0.12, when running PHP FPM SAPI with the main FPM daemon process running as the root user and child worker processes running as lower-privileged users, it is possible for the child processes to access memory...

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

In the Linux kernel, the following vulnerability has been resolved: ipc: fixed to protect IPCS lookups using RCU. syzbot reported that it discovered a use-after-free vulnerability, 0. 0: https://lore.kernel.org/all/[email protected]/ idrforeach is protected by rwsem, but...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm/filemap: Make MAXPAGECACHEORDER acceptable to xarray. Patch series “mm/filemap: Limit page cache size to that supported by xarray”, version 2. Currently, xarray cannot support arbitrary page cache sizes. More details can be...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: shmem: fixed the issue where renaming failed due to insufficient memory; MapleTree insertions may fail if there is severely low memory available; simpleoffsetrename does not handle failures properly when encountering such...

Astra Linux – Vulnerability in Linux, Linux 5.10

A use-after-free exists in the drivers/tee/teeshm.c file within the TEE subsystem of the Linux kernel, as of version 5.15.11. This issue arises due to a race condition during the teeshmgetfromid function, when attempting to free a shared memory object...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: drm/shmem-helper: The erroneous “put” operation has been removed from the error path. The drmgemshmemmmap function does not have a reference in the error code path, resulting in the dma-buf shmem GEM object being freed...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Ensure that objs is not NULL in virtiogpuarrayputfree. If virtiogpuobjectshmeminit fails e.g., due to fault injection, as happened in the bug report by syzbot, virtiogpuarrayputfree might be called with objs being NUL...