CVE-2023-53752 net: deal with integer overflows in kmalloc_reserve()

In the Linux kernel, the following vulnerability has been resolved: net: deal with integer overflows in kmallocreserve Blamed commit changed: ptr = kmallocsize; if ptr size = ksizeptr; size = kmallocsizeroundupsize; ptr = kmallocsize; This allowed various crash as reported by syzbot 1 and Kyle...

CVE-2023-53752

CVE-2023-53752 is a Linux kernel issue in the kmalloc_reserve path of net/core/skbuff.c. The patch fixes an overflow/size-truncation bug: kmalloc_size_roundup(size) may produce 2^32 for inputs > 0x80000001, which gets truncated to 0 when stored in a 32-bit obj_size, causing kmalloc(0) and ZERO...

CVE-2023-53752

In the Linux kernel, the following vulnerability has been resolved: net: deal with integer overflows in kmallocreserve Blamed commit changed: ptr = kmallocsize; if ptr size = ksizeptr; size = kmallocsizeroundupsize; ptr = kmallocsize; This allowed various crash as reported by syzbot 1 and Kyle...

CVE-2025-40301

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

UBUNTU-CVE-2025-40301

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

CVE-2025-40301 Bluetooth: hci_event: validate skb length for unknown CC opcode

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

CVE-2025-40301

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

CVE-2025-40301 Bluetooth: hci_event: validate skb length for unknown CC opcode

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

CVE-2025-40290

CVE-2025-40290 concerns the Linux kernel’s XSk patching path. The issue arises from storing the descriptor number in the skb control block to track umem addresses for the xsk completion queue, which is unsafe since the skb control block can be overwritten after transmission. This leads to a NULL ...

CVE-2025-40290 xsk: avoid data corruption on cq descriptor number

In the Linux kernel, the following vulnerability has been resolved: xsk: avoid data corruption on cq descriptor number Since commit 30f241fcf52a "xsk: Fix immature cq descriptor production", the descriptor number is stored in skb control block and xskcqsubmitaddrlocked relies on it to put the ume...

PT-2025-49482

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.1.39 Description The Linux kernel contained an issue where an integer overflow in the kmalloc reserve function could lead to crashes. Specifically, if the size parameter passed to kmalloc reserve was greater th...

Linux Distros Unpatched Vulnerability : CVE-2025-40301

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first by...

EUVD-2025-201573

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Bluetooth 6lowpan.c netdev has headerops, so it must set link-local header for RX skb, otherwise things crash, eg. with AFPACKET SOCKRAW Add missing skbresetmacheader...

UBUNTU-CVE-2025-40282

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Bluetooth 6lowpan.c netdev has headerops, so it must set link-local header for RX skb, otherwise things crash, eg. with AFPACKET SOCKRAW Add missing skbresetmacheader...

AZL-71375 CVE-2025-40240 affecting package kernel for versions less than 6.6.117.1-1

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid NULL dereference when chunk data buffer is missing chunk-skb pointer is dereferenced in the if-block where it's supposed to be NULL only. chunk-skb can only be NULL if chunk-headskb is not. Check for fraglist instead...

kernel: skbuff: skb_segment, Call zero copy functions before using skbuff frags

In the Linux kernel, the following vulnerability has been resolved: skbuff: skbsegment, Call zero copy functions before using skbuff frags Commit bf5c25d60861 "skbuff: in skbsegment, call zerocopy functions once per nskb" added the call to zero copy functions in skbsegment. The change introduced ...

SUSE-SU-2025:4320-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2022-50327: ACPI: processor: idle: Check acpifetchacpidev return value bsc1249859. - CVE-2022-50334: hugetlbfs: fix null-ptr-deref in hugetlbfsparseparam bsc1249857. ...

Oracle Linux 10 : ELSA-2025-20095-0: / kernel (ELSA-2025-200950)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-200950 advisory. - selftests: tls: add tests for zero-length records CKI Backport Bot RHEL-114328 CVE-2025-39682 - tls: fix handling of zero-length records on the...

PT-2026-2519

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contained a memory leak in the nr sendmsg function within the netrom networking protocol implementation. The issue occurred when the sock alloc send skb function returne...

Moderate: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...