Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fscrypt: destroy keyring after securitysbdelete The function fscryptDestroykeyring must be called after all potentially-encrypted inodes have been evicted; otherwise, it cannot safely destroy the keyring. Since inodes that are...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: “fs/ntfs3: Replace inodetrylock with inodelock” This change is reflected in commit 69505fe98f198ee813898cbcaf6770949636430b. Initially, the conditional lock acquisition was removed to fix a bug in xfstest that was observed during...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: blk-crypto: made blkcryptoevictkey more robust. If blkcryptoevictkey determines that the key is still in use due to a bug or that -keyslotevict failed, it currently simply returns without unlinking the key from the keyslot...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed a use-after-free in ext4orphancleanup. I identified the issue as follows: BUG: KASAN: Use-after-free in listaddvalid+0x28/0x1a0. Read of size 8 at address ffff88814b13f378 by task mount/710. CPU: 1 PID: 710 Comm:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed a race condition between direct IO writes and fsync operations when using the same file descriptor. If we have two threads that use the same file descriptor, and one of them performs direct IO writes while the other...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: dax: fix an issue where overflowing extents beyond the inode size occurs during partial writing. The daxiomaprw function does two things in each iteration: it maps the written blocks and copies user data to those blocks. If...

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

In the Linux kernel, the following vulnerability has been resolved: Nilfs2: Added a missing check for inode numbers in directory entries. Syzbot reported that mounting and unmounting a specific pattern of corrupted Nilfs2 filesystem images causes a use-after-free of metadata file inodes, which...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed an issue where inode lists were leaked during backref walking in findparentnodes. During backref walking, when findparentnodes is called, if we are dealing with a data extent and an error occurs while resolving...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel up to version 6.2.7, fs/ntfs3/inode.c contains an invalid kfree function because it does not validate the MFT flags before replaying logs...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed an inode list leak during backref walking at resolveindirectrefs During backref walking, at resolveindirectrefs, if an error occurs, we jump to the ‘out’ label and call freeleaflist on the ‘parents’ ulist. This frees...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: fs/ntfs3: Fixed a general protection fault in runismappedfull. ntfscreate inode: Fixed the deletion of a non-resident attribute...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: fixed the issue of waiting for block writeback in the postread case. If the inode is compressed but not encrypted, the function f2fswaitonblockwriteback was not called properly, resulting in waiting for the GC-ed page...

Astra Linux – Vulnerability in Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: f2fs: A sanity check was added for the F2FSInlineDATA flag in the inode during garbage collection GC. The syzbot reports the following f2fs bug: ------------ Cut here ------------ Kernel BUG: At fs/f2fs/inline.c:258 CPU: 1 PID: 3...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel before version 6.1.3, fs/ntfs3/inode.c does not validate the attribute name offset. A unhandled page fault may occur...

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

In the Linux kernel, the following vulnerability has been resolved: fs: hfsplus: removing WARNON from hfspluscatread,writeinode. The syzbot tool encounters WARNON in hfspluscatread,writeinode, where a crafted filesystem image may contain invalid lengths. These conditions do not constitute kernel...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: A NULL dereference in niwriteinode has been fixed. Syzbot reported a NULL dereference in niwrite inode. When creating a new inode, if the allocation fails in the miinit function called in the miformatnew function, mi-mr...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ext2: Added more validation checks for inode counts. Checks were added to ensure that the number of inodes stored in the superblock matches the number calculated based on the number of inodes per group. It was also verified th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Always detect conflicting inodes when logging inode refs After renaming an inode, either through the rename operation or through regular renames in multiple non-atomic steps, if one of the inodes is a directory, the...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ovl: fixed null pointer dereference in ovlgetaclrcu The sequence of operations is as follows: P1 P2 pathopenat linkpathwalk maylookup inodepermissionrcu ovlpermission aclpermissioncheck checkacl getcachedaclrcu ovlget inodeacl...

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: Nilfs2: Rejects invalid file types when reading inodes. To prevent inodes with invalid file types from causing malfunctions or assertion failures, add a sanity check when reading an inode from a block device. If the file type is...