Astra Linux – Vulnerability in Linux 5.15

A use-after-free flaw was discovered in the smb2isstatusiotimeout function in CIFS within the Linux kernel. After CIFS transfers response data via a system call, there are still local variables pointing to the memory region. If the system call frees those pointers faster than CIFS uses them, CIFS...

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: aoe: Clean the rqlist of a aoe device in aoedevdowndev. The rqlist of an aoe device contains accepted block requests that are waiting to be transmitted to the aoe target. This queue was added as part of the transition to blkmq...

Astra Linux – Vulnerability in Redis

Redis is an open-source, in-memory database that persists data on disk. Versions 8.2.1 and earlier allow an authenticated user to use a specially crafted Lua script to read out-of-bounds data or cause the server to crash, resulting in a denial of service attack. This vulnerability exists in all...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: Corrected the incorrect validation of the next buffer length in smb2setea. There are multiple smb2eainfo buffers in the FILEFULLEAINFORMATION request from the client. ksmbd uses the NextEntryOffset of the current...

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: nbd: The defer config unlock in nbdgenlconnect has been fixed. There is one use-after-free warning when running NBDCMDCONNECT and NBDCLEARSOCK: nbdgenlconnect: nbdallocandinitconfig // configrefs=1 nbdstartdevice // configrefs...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: icmp: clearing the skb2-cb array in ip6errgenicmpv6unreach According to Sashiko’s AI-review, the following issues were observed: 1. In ip6errgenicmpv6unreach, skb represents an outer IPv4 ICMP error packet. Its cb contains ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: block, bfq: do not move oombfqq Our test report a UAF: 2073.019181 ================================================================== 2073.019188 BUG: KASAN: use-after-free in bfqputbfqq+0xa0/0x168 2073.019191 Written a size 8...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: blk-mq: The crypto keyslot must be released before reporting I/O completion. Once all I/O operations using the blkcryptokey are completed, the file systems can call blkcryptoevictkey. However, the block layer currently does not...

Astra Linux – Vulnerability in node-marked

Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression block.def might cause catastrophic backtracking against certain strings, leading to a regular expression denial of service ReDoS attack. Any user who runs untrusted markdown using a vulnerable version of...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: btrfssetheadergeneration must not be moved to after cleantreeblock, because cleantreeblock calls btrfsheadergeneration from commit 55c69072d6bd5be1 “Btrfs: Fix extentbuffer usage when nodesize != leafsize”. In...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: blk-mq: Fixed a memory leak in blkmqinitallocatedqueue. There is a memory leak caused by modprobe nullblk.ko. Unreferenced object 0xffff8881acb1f000 size 1024: - Command: “modprobe”, PID: 836, Jiffies: 4294971190 Age: 27.068...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: cifs: fixed a small mempool leak in SMB2negotiate. In some cases of failures dialect mismatches in SMB2negotiate, after the request is sent, the checks would return -EIO. Instead, it should return rc = -EIO and proceed to negexit...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: cifs: fixed an oops during encryption When running xfstests against Azure, the following oops occurred on an arm64 system: Unable to handle kernel writes to read-only memory at virtual address ffff0001221cf000 Mem abort info:...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: The block range must be validated before being used in ext4mbclearbb. The block range to be freed is validated in ext4freeblocks, using ext4 inodeblockvalid, and then it is passed to ext4mbclearbb. However, in some cases on...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: nullblk: fixed handling of poll request timeouts When performing the iouring benchmark on /dev/nullb0, it’s easy for the kernel to crash if poll requests time out, as reported by David. 1 BUG: Kernel NULL pointer dereferencing...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: blk-throttle: prevented overflow during the calculation of wait time. There is a problem identified during code review in tgwithinbpslimit; the expression 'bpslimit jiffyelapsedrnd' might cause an overflow. This issue can be...

Astra Linux – Vulnerability in Linux

A issue was discovered in the Linux kernel through version 5.10.1, as used with Xen up to version 4.14.x. The Linux kernel’s PV block backend expects the kernel thread handler to reset ring-xenblkd to NULL when the thread is stopped. However, the handler may not have enough time to execute if the...

Astra Linux – Vulnerability in Linux

In the Linux kernel, from drivers/block/nbd.c up to version 5.10.12, there is a use-after-free in the nbdaddsocket function. This issue could be triggered by local attackers who have access to the nbd device. The attack occurs during I/O requests at a certain point in device setup, specifically...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: nbd: Fixed NULL pointer in flushworkqueue Open /dev/nbdX first; the configrefs will be 1, and the pointers in nbddevice remain null. Disconnect /dev/nbdX, then reference a NULL recvworkq. The protection provided by configrefs ...

Astra Linux – Vulnerability in Linux 5.10

A vulnerability was discovered in the Linux kernel’s blockinvalidatepage function in the fs/buffer.c file of the filesystem. A missing sanity check may allow a local attacker with user privileges to cause a denial of service DOS issue...