NULL Pointer Dereference

Overview Affected versions of this package are vulnerable to NULL Pointer Dereference via the BIOgetdata function. An attacker can cause the application to crash by sending a specially crafted DTLS/TLS connection that results in a NULL pointer dereference. Remediation A fix was pushed into the...

CVE-2025-65493

NULL pointer dereference in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIOgetdata to return NULL...

SUSE-SU-2025:4123-1 Security update for the Linux Kernel (Live Patch 61 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise kernel 4.12.14-122.231 fixes various security issues The following security issues were fixed: - CVE-2022-48956: ipv6: avoid use-after-free in ip6fragment bsc1232637. - CVE-2022-49014: net: tun: Fix use-after-free in tundetach bsc1232818. - CVE-2022-49053...

CVE-2025-36461

Multiple out-of-bounds read and write vulnerabilities exist in the ControlVault WBDI Driver Broadcom Storage Adapter functionality of Dell ControlVault3 prior to 5.15.14.19 and Dell ControlVault3 Plus prior to 6.2.36.47. A specially crafted WinBioControlUnit call can lead to memory corruption. An...

The vulnerability of the bio_endio() function in the block/bio.c module of the Linux operating system’s kernel allows a hacker to cause a service failure.

The vulnerability of the bioendio function in the block/bio.c module of the Linux operating system’s kernel is related to incorrect error handling. Exploiting this vulnerability could allow an attacker to cause a service failure...

kernel: block: fix adding folio to bio

In the Linux kernel, the following vulnerability has been resolved: block: fix adding folio to bio 4GB folio is possible on some ARCHs, such as aarch64, 16GB hugepage is supported, then 'offset' of folio can't be held in 'unsigned int', cause warning in bioaddfolionofail and IO failure. Fix it by...

The vulnerabilities of the functions g_tls_bio_new_from_iostream() and g_tls_bio_new_from_datagram_based() in the OpenSSL library allow a hacker to gain unauthorized access to protected information.

The vulnerability of the gtlsbionewfromiostream and gtlsbionewfromdatagrambased functions in the OpenSSL library is related to the use of uninitialized pointers. Exploiting this vulnerability could allow a remote attacker to gain unauthorized access to protected information...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989739)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989739 advisory. In the Linux kernel, the following vulnerability has been resolved: bfq: Update cgroup information before merging bio When the process is migrated to a different...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: nvmet: fixed the memory leak related to bio integrity. If nvmet receives commands containing metadata, there is a continuous memory leak involving the kmalloc-128 slab, or more precisely, bio-biintegrity. Since the commit...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: dm: Always split write BIOs to zoned device limits Any zoned DM target that requires zone append emulation will use the block layer zone write plugging mechanism. In such cases, DM target drivers must not split BIOs using...

SUSE CVE-2025-40054

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

CVE-2025-40054

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

UBUNTU-CVE-2025-40054

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

CVE-2025-40054

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

CVE-2025-40054 f2fs: fix UAF issue in f2fs_merge_page_bio()

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

CVE-2025-40054 f2fs: fix UAF issue in f2fs_merge_page_bio()

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

EUVD-2025-36474

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix UAF issue in f2fsmergepagebio As JY reported in bugzilla 1, Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : 0xffffffe51d249484 f2fsiscpguaranteed+0x70/0x98 lr : 0xffffffe51d24ad...

kernel: block: fix adding folio to bio

In the Linux kernel, the following vulnerability has been resolved: block: fix adding folio to bio 4GB folio is possible on some ARCHs, such as aarch64, 16GB hugepage is supported, then 'offset' of folio can't be held in 'unsigned int', cause warning in bioaddfolionofail and IO failure. Fix it by...

Top security researcher shares their bug bounty process

As we wrap Cybersecurity Awareness Month, the GitHub Bug Bounty team is excited to spotlight another top performing security researcher who participates in the GitHub Security Bug Bounty Program, Andr e Storfjord Kristiansen! GitHub is dedicated to maintaining the security and reliability of the...

EUVD-2022-55648

In the Linux kernel, the following vulnerability has been resolved: blk-throttle: prevent overflow while calculating wait time There is a problem found by code review in tgwithinbpslimit that 'bpslimit jiffyelapsedrnd' might overflow. Fix the problem by calling mulu64u64divu64 instead...