python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API

A flaw was found in the Python webbrowser.open API. If a specially crafted URL containing "%action" is processed, an attacker could bypass a previous mitigation for CVE-2026-4519. This bypass allows for command injection into the underlying shell, potentially leading to arbitrary code execution...

cpython: CPython: Logging Bypass in Legacy .pyc File Handling

A flaw was found in CPython. This vulnerability allows a local user with low privileges to bypass security auditing mechanisms. The issue occurs because the SourcelessFileLoader component, responsible for handling older Python compiled files .pyc, does not properly trigger system audit events. Th...

cpython: wsgiref.headers.Headers allows header newline injection in Python

Missing newline filtering has been discovered in Python. User-controlled header names and values containing newlines can allow injecting HTTP headers...

Important: Red Hat Security Advisory: python3.14 security update

An update for python3.14 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fr...

cpython: Incomplete control character validation in http.cookies

A control character validation flaw has been discovered in the Python http.cookie module. The Morsel.update, |= operator, and unpickling paths were not patched to resolve CVE-2026-0672, allowing control characters to bypass input validation. Additionally, BaseCookie.jsoutput lacked the output...

python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules

A flaw was found in Python's decompression modules, including lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile. This vulnerability, a use-after-free, can occur if a program attempts to re-use a decompression object after a memory allocation error, especially when the system is...

python: Python: Command-line option injection in webbrowser.open() via crafted URLs

A flaw was found in Python. The webbrowser.open API, used to launch web browsers, does not properly sanitize input. This allows a remote attacker to craft a malicious URL containing leading dashes. When such a URL is opened, certain web browsers may interpret these dashes as command-line options,...

cpython: Stack overflow parsing XML with deeply nested DTD content models

A stack overflow flaw has been discovered in the python pyexpat module. When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs. This will result in a program crash...

postgresql: PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code

A type validation flaw has been discovered in PostgreSQL. Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database...

postgresql: PostgreSQL pgcrypto heap buffer overflow executes arbitrary code

A heap based buffer overflow flaw has been discovered in PostgreSQL. This Heap buffer overflow is in the pgcrypto component and allows a ciphertext provider to execute arbitrary code as the operating system user running the database...

postgresql: PostgreSQL missing validation of multibyte character length executes arbitrary code

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database...

postgresql: PostgreSQL oidvector discloses a few bytes of memory

A type validation flaw has been discovered in postgresql. Improper validation of the type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. It is possible that this may expose confidential information but it is unlikely...

Important: Red Hat Security Advisory: postgresql16 security update

An update for postgresql16 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability...

kernel: bpf: Do not include stack ptr register in precision backtracking bookkeeping

In the Linux kernel, the following vulnerability has been resolved: bpf: Do not include stack ptr register in precision backtracking bookkeeping Yi Lai reported an issue 1 where the following warning appears in kernel dmesg: 60.643604 verifier backtracking bug 60.643635 WARNING: CPU: 10 PID: 2315...

kernel: dm: fix NULL pointer dereference in __dm_suspend()

In the Linux kernel, the following vulnerability has been resolved: dm: fix NULL pointer dereference in dmsuspend There is a race condition between dm device suspend and table load that can lead to null pointer dereference. The issue occurs when suspend is invoked before table load completes: BUG...

kernel: bonding: check xdp prog when set bond mode

In the Linux kernel, the following vulnerability has been resolved: bonding: check xdp prog when set bond mode Following operations can trigger a warning1: ip netns add ns1 ip netns exec ns1 ip link add bond0 type bond mode balance-rr ip netns exec ns1 ip link set dev bond0 xdp obj afxdpkern.o se...

kernel: Linux kernel: Denial of service and memory corruption in RDMA umad

A flaw was found in the Linux kernel's Remote Direct Memory Access RDMA umad User Mode Access Device component. A local user can exploit this vulnerability by manipulating input, causing an integer underflow that leads to an out-of-bounds memory write. This memory corruption can result in a denia...

kernel: nvmet: fix memory leak of bio integrity

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak of bio integrity If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-128 slab or more precisely bio-biintegrity. Since commit bf4c89fc8797 "block: don't call biouninit from...

kernel: netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: account for Ethernet header in nfflowpppoeproto syzbot found a potential access to uninit-value in nfflowpppoeproto Blamed commit forgot the Ethernet header. BUG: KMSAN: uninit-value in...

kernel: block: fix resource leak in blk_register_queue() error path

In the Linux kernel, the following vulnerability has been resolved: block: fix resource leak in blkregisterqueue error path When registering a queue fails after blkmqsysfsregister is successful but the function later encounters an error, we need to clean up the blkmqsysfs resources. Add the missi...

kernel: bpf: fix ktls panic with sockmap

In the Linux kernel, the following vulnerability has been resolved: bpf: fix ktls panic with sockmap 2172.936997 ------------ cut here ------------ 2172.936999 kernel BUG at lib/ioviter.c:629! ...... 2172.944996 PKRU: 55555554 2172.945155 Call Trace: 2172.945299 2172.945428 ? die+0x36/0x90...

kernel: fs: writeback: fix use-after-free in __mark_inode_dirty()

In the Linux kernel, the following vulnerability has been resolved: fs: writeback: fix use-after-free in markinodedirty An use-after-free issue occurred when markinodedirty get the bdiwriteback that was in the progress of switching. CPU: 1 PID: 562 Comm: systemd-random- Not tainted...

kernel: wifi: mac80211_hwsim: fix typo in frequency notification

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211hwsim: fix typo in frequency notification The NAN notification is for 5745 MHz which corresponds to channel 149 and not 5475 which is not actually a valid channel. This could result in a NULL pointer dereference in...

kernel: net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime Assuming the "rx-vlan-filter" feature is enabled on a net device, the 8021q module will automatically add or remove VLAN 0 when the net device is put...

kernel: dmaengine: idxd: fix memory leak in error handling path of idxd_alloc

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix memory leak in error handling path of idxdalloc Memory allocated for idxd is not freed if an error occurs during idxdalloc. To fix it, free the allocated memory in the reverse order of allocation before exiti...

kernel: espintcp: remove encap socket caching to avoid reference leak

In the Linux kernel, the following vulnerability has been resolved: espintcp: remove encap socket caching to avoid reference leak The current scheme for caching the encap socket can lead to reference leaks when we try to delete the netns. The reference chain is: xfrmstate - enacpsk - netns Since...

kernel: nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails

In the Linux kernel, the following vulnerability has been resolved: nfs: Clean up /proc/net/rpc/nfs when nfsfsprocnetinit fails. syzbot reported a warning below 1 following a fault injection in nfsfsprocnetinit. 0 When nfsfsprocnetinit fails, /proc/net/rpc/nfs is not removed. Later, rpcprocexit...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9. 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 available for each vulnerability from the...

freerdp: FreeRDP has a heap-use-after-free in video_timer

A use after free flaw has been discovered in FreeRDP. The videotimer can send client notifications after the control channel is closed, dereferencing a freed callback and triggering a use after free. A malicious server can trigger a client‑side heap use after free causing a crash DoS...

freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow

A flaw was found in FreeRDP. A malicious server can exploit a vulnerability in FastGlyph parsing, which improperly trusts data length without sufficient validation. This can lead to a client-side global buffer overflow, resulting in a denial of service DoS due to a crash. For this vulnerability t...

freerdp: FreeRDP heap-buffer-overflow

A heap based buffer overflow has been discovered in FreeRDP. This heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory...

FreeRDP: FreeRDP: Denial of Service via specially crafted Remote Desktop Protocol messages

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol RDP. A remote attacker could exploit this vulnerability by sending a specially crafted RDP message. This can lead to an undefined behavior where a wrapped value is used as a shift exponent, causing an approximately ...

freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface

A heap buffer overflow has been discovered in FreeRDP. The URBDRC client uses server-supplied interface numbers as array indices without bounds checks, causing an out-of-bounds read in libusbudevselectinterface...

freerdp: FreeRDP has a Heap-use-after-free in play_thread

A heap use after free has been discovered in FreeRDP. The RDPSND async playback thread can process queued PDUs after the channel is closed and internal state is freed, leading to a use after free in rdpsndtreatwave...

freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event

A heap buffer use after free has been discovered in FreeRDP. ainputsendinputevent caches channelcallback in a local variable and later uses it without synchronization; a concurrent channel close can free or reinitialize the callback, leading to a use after free...

FreeRDP: FreeRDP: Heap buffer overflow allows arbitrary code execution via crafted pixel data

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A remote attacker could exploit a heap buffer overflow vulnerability in the resizevbarentry function. This occurs when an error in buffer resizing leads to attacker-controlled pixel data being written into an...

freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface

A heap buffer use after free has been discovered in FreeRDP. urbselectinterface can free the device's MS config on error but later code still dereferences it, leading to a use after free in libusbudevselectinterface...

freerdp: FreeRDP heap-buffer-overflow

A heap based buffer overflow has been discovered in FreeRDP. In affected versions the URBDRC client does not perform bounds checking on server‑supplied MSUSBINTERFACEDESCRIPTOR values and uses them as indices in libusbudevcompletemsconfigsetup, causing an out‑of‑bounds read...

freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb

A heap buffer use after free has been discovered in FreeRDP. Asynchronous bulk transfer completions can use a freed channel callback after URBDRC channel close, leading to a use after free in urbwritecompletion...

freerdp: FreeRDP heap-buffer-overflow

A heap based buffer overflow has been discovered in FreeRDP. This heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length...

Important: Red Hat Security Advisory: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

freerdp: FreeRDP global-buffer-overflow

A global buffer overflow flaw has been discovered in FreeRDP. This global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c = 0 can be...

freerdp: FreeRDP has a Heap-buffer-overflow in audio_formats_free

A heap buffer overflow has been discovered in FreeRDP. audinserverrecvformats frees an incorrect number of audio formats on parse failure i + i, leading to out-of-bounds access in audioformatsfree...

freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol RDP. The gdisurfacebits function, which processes SURFACEBITSCOMMAND messages, does not properly validate image dimensions bmp.width and bmp.height provided by a malicious RDP server. This can lead to a heap buffer...

freerdp: FreeRDP heap-buffer-overflow

A heap based buffer overflow has been discovered in FreeRDP. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input AUDIN format lists. audinprocessformats reuses callback-formatscount across multiple MSGSNDINFORMATS PDUs...

freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2()

A null pointer dereference has been discovered in FreeRDP. A NULL pointer dereference vulnerability in rdpwritelogoninfov2 allows a malicious RDP server to crash FreeRDP proxy by sending a specially crafted LogonInfoV2 PDU with cbDomain=0 or cbUserName=0...

freerdp: FreeRDP heap-buffer-overflow

A heap based buffer overflow flaw has been discovered in FreeRDP. In affected versions RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndrreaduint8Array...

freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in GDI surface pipeline

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol RDP. A malicious RDP server can exploit a heap buffer overflow vulnerability by sending a specially crafted graphics command to a FreeRDP client. This allows the server to write data outside of its intended memory...

freerdp: FreeRDP: Denial of Service via use after free in ecam_channel_write

A denial of service flaw has been found in FreeRDP. A capture thread sends sample responses using a freed channel callback after a device channel close, leading to a use after free in ecamchannelwrite...

freerdp: FreeRDP: Arbitrary code execution via heap out-of-bounds write in RLE planar decode path

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol RDP. A malicious RDP server can exploit a heap out-of-bounds write vulnerability in the planardecompressplanerle function. This vulnerability allows the server to write past the end of a temporary buffer, potentiall...