Astra Linux – Vulnerability in Samba

A flaw was discovered in the Samba AD LDAP server. The AD DC database audit logging module can access values of LDAP messages freed by a preceding database module, leading to a use-after-free issue. This issue only occurs when certain privileged attributes are modified, such as userAccountControl...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: fixed the global out-of-bounds read in ksmbdnlpolicy. Similar to the reported issue see commit b33fb5b801c6 “net: qualcomm: rmnet: fixed global out-of-bounds in rmnetpolicy”, my local fuzzer discovered another global...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Buffer validation was corrected by including the size of the null-terminating character in the EA length. The smb2setea function, which handles Extended Attributes EA, conducted buffer validation checks that incorrectly...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: xfs: Eliminate zero-length freemap entries when they are empty Back in commit 2a2b5932db6758 “xfs: fix attr leaf header freemap.size underflow”, Brian Foster observed that it’s possible for a small freemap at the end of the xattr...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Platform/x86: classmate-laptop – Added NULL pointer checks where necessary. In several places within the Classmate laptop driver, code that uses the accel object may execute before its address is stored in the driver’s data...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: xfs: fixed issues with freemap adjustments when adding xattrs to leaf blocks. Both xfs/592 and xfs/794 fail this assertion in the leaf block freemap adjustment code after approximately 20 minutes of execution on my test VMs...

Astra Linux – Vulnerability in the 389-DS-base

A double-free was detected in the way that 389-ds-base handles virtual attribute contexts during persistent searches. An attacker could send a series of search requests, causing the server to behave unexpectedly and potentially crashing it...

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

In the Linux kernel, the following vulnerability has been resolved: net: dcb: The correct policy must be chosen to parse DCBATTRBCN. The function dcbnlbcnsetcfg uses an incorrect policy to parse tbDCBATTRBCN. This issue was introduced in commit 859ee3c43812 “DCB: Add support for DCB BCN”. Please...

Astra Linux – Vulnerability in Jinja2

Jinja is an extensible templating engine. Special placeholders in the template allow writing code similar to Python syntax. It is possible to inject arbitrary HTML attributes into the rendered HTML template, which could potentially lead to Cross-Site Scripting XSS. The Jinja xmlattr filter can be...

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

In the Linux kernel, the following vulnerability has been resolved: hwmon: adc128d818 Underflow issues were fixed when writing limit attributes. The DIVROUNDCLOSEST function, after kstrtol, may cause an underflow if a large negative number, such as -9223372036854775808, is provided by the user...

Astra Linux – Vulnerability in Samba

A flaw was discovered in Samba’s libldb. Multiple consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, causing the LDAP server process handling the request to crash. The greatest threat of this vulnerability is to system availability...

Astra Linux – Vulnerability in ntfs-3g

In NTFS-3G versions 2021.8.22, when specially crafted NTFS attributes are read in the function ntfsattrpreadi, a heap buffer overflow can occur, allowing for writing to arbitrary memory or causing denial of service for the application...

Astra Linux – Vulnerability in libxml2

In libxml2 version 2.9.13, the valid.c file contains a use-after-free issue with the ID and IDREF attributes...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: validate numifs to prevent out-of-bounds write The driver obtains swattr.numifs from the firmware via dpswgetattributes, but never validates it against DPSWMAXIF 64. This value controls the iteration in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ocfs2: fixed the issue with preserving cleanup for reflinks. The commit c06c303832ec “ocfs2: fixed the error where xattr array entries were not properly handled” does not handle all cases, and the cleanup of preserved xattr...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: Fixed out-of-bounds access during read/writing of sysfs attributes. Some f2fs sysfs attributes suffer from out-of-bounds memory access and incorrect handling of integer values whose size is not 4 bytes. Example: vm: echo...

Astra Linux – Vulnerability in ruby-rails-html-sanitizer

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer 1.4.4 use a inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a...

Astra Linux – Vulnerability in cups

OpenPrinting CUPS is an open-source printing system for Linux and other Unix-like operating systems. Prior to version 2.4.17, a network-attached attacker could send a crafted SNMP response to the CUPS SNMP backend, causing an out-of-bounds read of up to 176 bytes beyond the stack buffer. The leak...

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

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Reserving space for inline xattr before attaching the reflink tree. One of our customers reported a crash and a corrupted ocfs2 filesystem. The crash was due to the detection of corruption. Upon troubleshooting, the fsck -...

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: openvswitch: The issue of unsafe attribute parsing in outputuserspace has been fixed. This patch replaces the manual Netlink attribute iteration in outputuserspace with nlaforeachnested, which ensures that only well-formed...