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

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: fixed a race condition in mptcppmdeladdtimer The mptcppmdeladdtimer function can call skstoptimersyncsk, &entry-addtimer. It is reported that there might already be a free entry, as reported by syzbot. Added RCU...

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

In the Linux kernel, the following vulnerability has been resolved: ext4: Detecting invalid INLINEDATA + EXTENTS flag combinations Syzbot reported a bug in ext4escacheextent when opening a Verity file on a corrupted ext4 file system that was mounted without a journal. The issue arises when the fi...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: fs/ntfs3: Fixed a memory leak that occurred when ntfsreadmft failed. When the label ATTRROOT in ntfsreadmft sets isroot = true and ni-niflags |= NIFLAGDIR, the next attribute will go to the label ATTRALLOC, resulting in an...

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: Bluetooth: bcsp: receives data only if registered Currently, the bcsprecv function can still be called even when the BCSP protocol has not been registered. This leads to a NULL pointer dereference, as shown in the following stack...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: debugobjects: Do not wake up kswapd from fillpool. syzbot reports a lockdep warning in fillpool, because the allocation via debugobjects uses GFPATOMIC, which is GFPHIGH | GFPKSWAPDRECLAIM. This attempt to wake up kswapd resul...

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: 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 in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs: Protect reconfiguration of sb read-write from racing writes The code responsible for reconfiguration and remounting the filesystem requires significant effort to protect it from racing writes during operations where the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: XDP: Use the flags field to disambiguate broadcast redirections When redirecting a packet using XDP, the bpfredirectmap helper function sets the redirection destination information in the struct bpfredirectinfo structure using th...

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

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixed state management in the error-prone path of the log writing function. After the commit a694291a6211 “nilfs2: separating the wait function from nilfssegctorwrite” was applied, the log writing function...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nbd: fixed the race condition between timeout and normal completion. If the request for a timeout is handled by nbdrequeuecmd, normal completion must be stopped to avoid completing this queued request. This could potentially...

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

In the Linux kernel, the following vulnerability has been resolved: ocfs2: A potential NULL pointer dereferencing has been fixed in ocfs2setbufferuptodate. During cleanup, if flags do not include OCFS2BHREADAHEAD, it may trigger a NULL pointer dereferencing in the ocfs2setbufferuptodate function,...

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

In the Linux kernel, the following vulnerability has been resolved: Nilfs2: Fixed a kernel bug caused by failing to clear the buffer delay flag. Syzbot reported that after Nilfs2 reads a corrupted file system image and becomes read-only, the BUGON check for the buffer delay flag in submitbhwbc ma...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm: pagealloc: moving the mlocked flag to freepagesprepare Syzbot reported a problem with bad page state caused by a page being freed using freepage, while the mlocked flag is still present during the freepagesprepare stage: BUG:...

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: virtio/vsock: Fixed the acceptqueue memory leak Since the final stages of socket destruction may be delayed, it is possible that virtiotransportrecvlisten will be called after the acceptqueue has been flushed, but before the...

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: bpf: synclinked regs must preserve subregdef Range propagation must not affect subregdef marks. Otherwise, the following example is rewritten incorrectly by the verifier when the BPFFTESTRNDHI32 flag is set: 0: call bpfktimegetns...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only set fullmesh for subflow endp With the in-kernel path-manager, it is possible to change the ‘fullmesh’ flag. The code in mptcppmnlfullmesh expects to change this flag only on ‘subflow’ endpoints, in order to...

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

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/core: Silence oversized kvmalloc warnings The syzkaller triggered an oversized kvmalloc warning. Silence this warning by adding GFPNOWARN. syzkaller log: WARNING: CPU: 7 PID: 518 at mm/util.c:665...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Do not generate errors if the user space injects an interrupt with GIF=0. Do not generate errors or warnings during interrupt injection when GIF is cleared. It is trivial for the user space to force this situation using...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: When a non-Ethernet device is used as a slave in a bonding configuration, the IFFSLAVE flag of the bonding device must be restored if the slave device fails. A warning was reported by syzbot1. In this case, the bonding device...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: added handling for RAID1C23/DUP to btrfsreduceallocprofile Callers of btrfsreduceallocprofile expect it to return exactly one allocation profile flag. If this is not done, it may ultimately result in a WARNON and remount-r...