Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: AppArmor: Avoid per-cpu hold underflow in aagetbuffer. When aagetbuffer retrieves data from the per-cpu list, it conditionally decreases cache-hold. If hold reaches 0 while count remains non-zero, the unsigned decrement wraps to...

Astra Linux – Vulnerability in libheif

libheif is a decoder and encoder for HEIF and AVIF file formats. In versions 1.21.2 and earlier, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc field could cause an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, causing all sampl...

Astra Linux – Vulnerability in libsoup2.4

A flaw was discovered in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, resulting in a buffer overread. This can allow an attacker to potentially access sensitive information or cause a denial of service at the application level...

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 found in Linux 6.1, Linux 6.12

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...

AZL-90338 CVE-2026-52919 affecting package kernel for versions less than 6.6.143.1-1

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

UBUNTU-CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

[FreeBSD] ptrace PT_SC_REMOTE missing argument validation: 32GiB memmove underflow + sysent out-of-bounds call

Summary A local unprivileged user can trigger a 32GiB memmove underflow via ptrace PTSCREMOTE with pscrnargs=0, and call arbitrary sysent function pointers due to missing syscall number bounds check in ptracesyscallreq. This allows kernel code execution under security.bsd.unprivilegedprocdebug=1...

CVE-2026-52919 batman-adv: fix tp_meter counter underflow during shutdown

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

EUVD-2026-38722

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919

CVE-2026-52919 affects the batman-adv component in the Linux kernel. The root cause is an underflow of the atomic counter “sending” in batadv_tp_sender_shutdown(), which is decremented unconditionally and can become -1 when multiple code paths call it. A negative value causes the sender kthread t...

CVE-2026-52919 batman-adv: fix tp_meter counter underflow during shutdown

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

AZL-90912 CVE-2026-9539 affecting package libslirp for versions less than 4.9.3-1

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...

CVE-2026-9539

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...

UBUNTU-CVE-2026-9539

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...

CVE-2026-9539

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...

CVE-2026-9539

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...