Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The lock-range check for files with equal size is skipped, to avoid underflow when size == 0. When size equals the current isize including 0, the code that calls checklockrangefilp, isize, size - 1, WRITE will compute size...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Wifi: wlcore – Ensure skbheadroom before calling skbpush. This fix prevents occasional skbunderpanic errors in wl1271txwork. In this case, the allocated headroom is less than what is actually needed typically 110 – 94 = 16 bytes...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Remove the improper idxdfree The call to idxdfree introduces a duplicate putdevice call, resulting in a reference count underflow: refcountt: underflow; use-after-free. WARNING: CPU: 15, PID: 4428, at...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Wifi: rtl818x: rtl8187: Fixed a potential buffer underflow in rtl8187rxcb. The rtl8187rxcb function calculates the RX descriptor header address by subtracting its size from the skbtailptr. However, it does not validate whether th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: caif: Fixed integer underflow in the cffrmlreceive function. The cffrmlreceive function extracts a length field from the packet header. When FCS is disabled, it subtracts 2 from this length without verifying that len is greater...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ip6gre: made ip6greheader more robust. Over the years, syzbot has identified many ways in which the kernel can crash due to issues related to ip6greheader. This involves the ability of team or bonding drivers to dynamically chang...

Astra Linux – Vulnerability in cups

OpenPrinting CUPS is an open-source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and earlier, there was an integer underflow vulnerability in the ppdCreateFromIPP function cups/ppd-cache.c. This vulnerability allowed any unprivileged local user to crash the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: EFI/CPER: Do not dump the entire memory region. The current logic in cperprintfwerr does not check whether the length of the error record is sufficient to handle the offset. In a faulty firmware, if the offset is greater than the...

Astra Linux – Vulnerability in glib2.0

A flaw was discovered in Glib’s content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored as a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fixed the potential underflow in virtiotransportgetcredit. The credit calculation in virtiotransportgetcredit uses unsigned arithmetic: ret = vvs-peerbufalloc - vvs-txcnt - vvs-peerfwdcnt; If the peer reduces its...

PT-2026-56475

Name of the Vulnerable Software and Affected Versions U-Boot versions prior to 2026.04-rc3 Description An integer underflow exists in the tcp rx state machine function within net/tcp.c. A network-adjacent attacker can trigger this by sending a malformed TCP SYN+ACK packet with a manipulated data...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/sched: teql: Fix double-free in teqlmasterxmit CVE-2026-23449 In the Linux kernel, the following vulnerability has been resolved: ext4: validate pidx bounds in ext4extcorrectindexes CVE-2026-31449 In the Linux...

CVE-2026-55490

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490 OpenWrt: EAD Integer Underflow → Pre-Auth Denial of Service

OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handlesenda of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows...

CVE-2026-55490

OpenWrt OpenWrt (embedded Linux) mediateces: CVE-2026-55490 affects the Emergency Access Daemon’s handle_send_a() where an integer underflow can lead to a pre-auth DoS by an unauthenticated attacker on the local network via a crafted UDP packet. The underflow causes a bounds-check misstep, then a...

GO-2026-5427 GoBGP has an Integer Underflow Issue in github.com/osrg/gobgp

GoBGP has an Integer Underflow Issue in github.com/osrg/gobgp...

SUSE-SU-2026:22702-1 Security update for krb5

This update for krb5 fixes the following issue - CVE-2026-11850: integer underflow in berval2tldata leads to heap out-of-bounds read bsc1268131...

Security Bulletin: Security vulnerabilities have been found in IBM Application Gateway

Summary Security vulnerabilities have been addressed in IBM Application Gateway Vulnerability Details CVEID:CVE-2026-40355 DESCRIPTION: In MIT Kerberos 5 aka krb5 before 1.22.3, there is a NULL pointer dereference if an application calls gssacceptseccontext on a system with a NegoEx mechanism...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: clear page-private in freepagesprepare CVE-2026-43303 In the Linux kernel, the following vulnerability has been resolved: lib/crypto: mpi: Fix integer underflow in mpireadrawfromsgl CVE-2026-43492 In...