CVE-2026-53048 gfs2: prevent NULL pointer dereference during unmount

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2logflush can be called when sdp-sdjdesc has already been deallocated and sdp-sdjdesc is NULL. Commit 35264909e9...

EUVD-2026-38916

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2logflush can be called when sdp-sdjdesc has already been deallocated and sdp-sdjdesc is NULL. Commit 35264909e9...

CVE-2026-53048 gfs2: prevent NULL pointer dereference during unmount

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2logflush can be called when sdp-sdjdesc has already been deallocated and sdp-sdjdesc is NULL. Commit 35264909e9...

CVE-2026-53039

CVE-2026-53039 concerns the Linux kernel OCFS2 code where OCFS2_IOC_GROUP_ADD could trigger a BUG_ON in ocfs2_set_new_buffer_uptodate due to validating the group input too late. The root cause is user-controlled group block being cached before ocfs2_verify_group_and_input() validates it, and impr...

CVE-2026-53039 ocfs2: validate group add input before caching

In the Linux kernel, the following vulnerability has been resolved: ocfs2: validate group add input before caching BUG OCFS2IOCGROUPADD can trigger a BUGON in ocfs2setnewbufferuptodate: kernel BUG at fs/ocfs2/uptodate.c:509! Oops: invalid opcode: 0000 1 SMP KASAN NOPTI RIP:...

CVE-2026-53029

CVE-2026-53029 affects the Linux kernel ntfs3 filesystem. A vulnerability arises from an uninitialized local variable lcn when handling zero-length data during I/O, which could lead to unpredictable behavior and potential information disclosure or DoS. The fix moves the check for a zero value in ...

CVE-2026-53026 NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix nfs4file access extra count in nfsd4addrdaccesstowrdeleg In nfsd4addrdaccesstowrdeleg, if fp-fifdsORDONLY is already set by another thread, nfs4filegetaccess should not be called to increment the nfs4file access count...

CVE-2026-53018 f2fs: avoid reading already updated pages during GC

In the Linux kernel, the following vulnerability has been resolved: f2fs: avoid reading already updated pages during GC We found the following issue during fuzz testing: page: refcount:3 mapcount:0 mapping:00000000b6e89c65 index:0x18b2dc pfn:0x161ba9 memcg:f8ffff800e269c00 aops:f2fsmetaaops ino:2...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: nfsd: never defer requests during idmap lookup During the decoding of v4 request compound arguments, certain operations e.g., SETATTR can trigger idmap lookup upcalls. When the responses to these upcalls are delayed beyond the...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: nfsd: Locking is provided for v4endgrace. Writing to v4endgrace can cause a race condition with server shutdown, resulting in memory being accessed after it has been freed—especially in the case of reclaimstrhashtbl. We cannot...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: The NFSINOLAYOUTCOMMIT field was cleared in pnfsmarklayoutstateidInvalidial. This fix prevents a crash occurring when the layout is null during this call stack: write inode - nfs4write inode - pnfslayoutcommit inode...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed the iloc.bh leak in ext4xattr inodeupdateref The error branch for ext4xattr inodeupdateref forgot to release the refcount for iloc.bh. This issue was discovered during code review...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: xfs: Only call xfarray,blobdestroy if we have a valid pointer. Only call the xfarray and xfblob destructors if we have a valid pointer, and make sure to null out that pointer afterwards. Note that this patch fixes a large number ...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When reading the name of a symbolic link from a UFS filesystem, grub2 fails to validate the string length provided as input. This lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and potentially allowing an attacker to...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: xfs: removed xfsattrleafhasname The calling convention of xfsattrleafhasname is problematic because it returns a NULL buffer when xfsattr3leafread fails, a valid buffer when xfsattr3leaflookupint returns -ENOATTR or -EEXIST, and ...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: xfs: check the return value of xchkscrubcreatesubord. This function should be fixed to return NULL instead of the mangled ENOMEM value. Additionally, the calling functions should be corrected to actually check for a null pointer...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fixed a deadlock that occurred when returning a delegation during the open function. Ben Coddington reported seeing a hang in the following stack trace: 0 ffffd0b50e1774e0 schedule at ffffffff9ca05415 1 ffffd0b50e177548...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fixed an infinite loop in attrloadrunsrange when there are inconsistencies in metadata. We have identified a bug in the ntfs3 file system where a malformed NTFS image can cause an infinite loop. This occurs when an...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: NFS: Fixed a deadlock involving nfsreleasefolio Wang Zhaolong reported a deadlock involving NFSv4.1 state recovery, waiting on kthreadd, which attempts to reclaim memory by calling nfsreleasefolio. The latter cannot proceed due t...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: nfsd: Check that the server is running in unlockfilesystem. If we try to unlock the filesystem via an administrative interface, and nfsd is not running, it will cause the server to crash. This occurs currently because the...