kernel: smc: Fix use-after-free in __pnet_find_base_ndev()

In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in pnetfindbasendev. syzbot reported use-after-free of netdevice in pnetfindbasendev, which was called during connect. 0 smcpnetfindismresource fetches skdstgetsk-dev and passes down to pnetfindbasendev,...

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

In the Linux kernel, the following vulnerabilities have been resolved: nilfs2: Fixed a failure to detect corruption of DAT files in BTree and direct mappings. The patch series is titled “nilfs2: Fix kernel bug at submitbhwbc”. This resolves a kernel bug reported by syzbot. Since there are two...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: removed two BUG functions from skbchecksumhelp. I have a syzbot report that managed to cause a crash in skbchecksumhelp. If syzbot can trigger these BUGs, it makes sense to replace them with more friendly WARNONONCE function...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed an warning in ext4updateinlinedata. Syzbot identified the following issue: EXT4-fs loop0: Mounted a filesystem with ID 00000000-0000-0000-0000-000000000000 without a journal. Quota mode: none. fscrypt: Uses...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fixed a NULL dereference in ntfsupdatemftmirr. If ntfsfillsuper is not called, then sbi-sb will be equal to NULL. The code should check this pointer before dereferencing it. The Syzbot encountered this issue by passing...

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

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Proper validation of chunk size in sctpsfootb was added. A size validation fix, similar to that in Commit 50619dbf8db7 “SCTP: Add size validation when processing chunks”, is also required in sctpsfootb to address a crash...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: fs: jfs: fix shift-out-of-bounds in dbDiscardAG. This fix should apply to most URSAN bugs that were recently detected by syzbot, by addressing the issue related to dbMount. Since syzbot is allegedly feeding invalid data into the...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Do not redirect packets with invalid pktlen Syzbot identified an issue 1: the fqcodel Drop function attempts to drop a flow without any SKBs, that is, when flow-head is null. The root cause, as stated in 2, is that the...

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

In the Linux kernel, the following vulnerability has been resolved: “fou”: removed the warning in guegroreceive for unsupported protocols. The warning for guegroreceive is removed if the encapsulated type is unknown or does not have a GRO handler. Such packets can be easily constructed. The Syzbo...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Team: Move teamdevicetypechange to the end of teamportadd. Attempting to add a port device that is already up will, unsurprisingly, fail. However, this failure occurs before modifying the teamdeviceheaderops. In the case of the...

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: sctp: sysctl: cookiehmacalg: avoid using current-nsproxy As mentioned in a previous commit of this series, using the net structure via current is not recommended for various reasons: - Inconsistency: obtaining information from th...

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

In the Linux kernel, the following vulnerability has been resolved: UDF: Detection of system inodes linked into the directory hierarchy When the UDF filesystem is corrupted, hidden system inodes may be linked into the directory hierarchy. This can lead to further serious corruption of the...

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

In the Linux kernel, the following vulnerabilities have been resolved: - In the net subsystem, for USB devices, the disruptive netifwakequeue function in rtl8150setmulticast has been removed. - The syzbot tool reported a WARNING in the rtl8150startxmit/usbsubmiturb function. The sequence of event...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: HID: usbhid: freeing rawreport buffers when the device is removed. This fix addresses a memory leak reported by syzbot at: https://syzkaller.appspot.com/bug?id=7b4fa7cb1a7c2d3342a2a8a6c53371c8c418ab47...

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

In the Linux kernel, the following vulnerabilities have been resolved: ipvlan: Added a helper function for ipvlanroutev6outbound. This was inspired by reports from syzbot, which used multiple ipvlan devices in their stacks. The stack size required in ipvlanprocessv6outbound was reduced by moving...

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

In the Linux kernel, the following vulnerability has been resolved: btrfs: Additional debug information will be output if an inline backref cannot be found. BUG Syzbot reported several warnings that were triggered within the function lookupInlineExtentBackref. CAUSE As usual, the reproducer of th...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: can: isotp: isotpsendmsg: added a result check for waiteventinterruptible. The waiteventinterruptible function is used to wait for complete transmission, but the result of this function, which may be interrupted, is not checked...

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

In the Linux kernel, the following vulnerability has been resolved: can: j1939: prevents deadlock by changing j1939sockslock to rwlock. The following 3 locks may race against each other, causing a deadlock situation in the Syzbot bug report: - j1939sockslock - activesessionlistlock -...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: kcm: fixed the order of calls to strpinit and cleanup. strpinit is called just a few lines above this csk-skuserdata check. It also initializes strp-work, etc. Therefore, there’s no need to call strpdone to cancel the newly...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: afunix: fixed the issue of struct pid leaks in OOB support. The issue arises from queueoob calling maybeaddcreds, which potentially holds a reference to a pid. However, the destructor of skb is not set either directly or by...