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Ubuntu

61,840 known vulnerabilities.

61,409 results · Feed

  • High 8.2

    U-Boot before 2026.10-rc5 Use-After-Free in lwIP wget Receive Callback

    U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation. When HTTP data storage fails, the callback frees the connection PCB but returns ERR_BUF instead of ERR_ABRT, causing the TCP…

  • High 8.2

    U-Boot before 2026.10-rc5 Buffer Overflow via NFS READ Reply

    U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass len…

  • Medium 5.2

    U-Boot before 2026.10-rc4 Integer Overflow in SquashFS Directory Table Allocation

    U-Boot before 2026.10-rc4 contains an integer overflow vulnerability in sqfs_read_directory_table() function when allocating the directory table buffer. Attackers can supply a crafted SquashFS image with an attacker-controlled superblock metablks_count value …

  • Medium 4.8

    U-Boot before 2026.10-rc3 Out-of-Bounds Write via Android Bootmeth Partition Read

    U-Boot before 2026.10-rc3 contains an out-of-bounds write vulnerability in read_slotted_partition() that fails to validate image size against partition bounds. Attackers with physical access can supply crafted boot media with oversized headers to write past t…

  • Medium 5.9

    U-Boot < 2027.01-rc1 Out-of-Bounds Write in BMP RLE8 Decoder

    U-Boot before 2027.01-rc1 contains an out-of-bounds write vulnerability in the video_display_rle8_bitmap function in drivers/video/video_bmp.c. Attackers can supply a crafted RLE8-compressed BMP image to corrupt memory adjacent to the framebuffer and crash th…

  • High 8.2

    U-Boot before 2026.10-rc3 Out-of-Bounds Write in IP Fragment Reassembly

    U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write vulnerability in the __net_defragment() function in net/net.c. Remote attackers can send a crafted IP fragment with non-zero offset and More-Fragments flag set during netb…

  • Medium 5.8

    virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection

    virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the…

  • High 7.3

    virtualenv: Command injection via --prompt in activate.bat (batch activator)

    virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, BatchActivator.quote() returns prompt text unchanged before activate.bat inserts it into a cmd.exe set "VAR=value" statement. An attacker who influences --prompt, VIRTUA…

  • High 7.2

    Barman snapshot backup deletion trusts unverified backup catalog metadata

    Unverified ownership in Barman snapshot backup deletion allows a principal who can write the backup catalog to cause Barman to delete unrelated cloud snapshots. When a snapshot backup is deleted, either explicitly or by retention policy enforcement, Barman re…

  • High 7.7

    virtualenv: Downloaded seed wheels (pip/setuptools) are not integrity-checked before use

    virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, download_wheel() accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative diges…

  • High 7.8

    virtualenv bash and fish activation scripts execute commands embedded in paths

    virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate (bash and zsh) and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh scri…

  • Medium 5.4

    JupyterLab: Argument injection in JupyterLab extension uninstall exposes server-readable files and internal URLs

    JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.0.0 until 4.5.11 and 4.6.4, the PyPI Extension Manager uninstall request reaches ExtensionHandler.post, which val…

  • Low 3.3

    Freedesktop Poppler FoFiTrueType.cc cvtSfnts integer overflow

    A vulnerability was determined in Freedesktop Poppler 26.06.0/26.07.0/26.08.0. This impacts the function FoFiTrueType::cvtSfnts of the file fofi/FoFiTrueType.cc. This manipulation causes integer overflow. The attack can only be executed locally. The exploit h…

  • High 7.5
    CVE-2026-102253 Public exploit

    iperf3 < 3.22 UDP Receive Worker Infinite Loop DoS

    iperf3 versions prior to 3.22 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash-loop the server's UDP receive worker into an unrecoverable infinite loop by sending a single crafted control-channel parameter messa…

  • High 7.8

    VLC media player before 3.0.24 Path Traversal via skins2

    VLC media player before 3.0.24 contains a path traversal vulnerability in the skins2 ThemeLoader that fails to validate member names in .vlt skin archives. Attackers can craft malicious skin files with path traversal sequences to write arbitrary files with VL…

  • Medium 4.3

    Uninitialized resource in Skia in Google Chrome prior to 154.0.8037.92 allowed a remote attacker to obtain cross-origin…

  • High 8.1

    JupyterLab: Cross-site scripting (XSS) in JupyterLab via notebook cells pasted from the system clipboard

    JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the sys…

  • Medium 6.8

    JupyterLab: Cross-site scripting (XSS) in JupyterLab via crafted language package (jupyterlab.json)

    JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 3.0.0 until 4.5.11 and 4.6.4, and in JupyterLite Core 0.8.3 and earlier, the Plural-Forms header in a selected thir…

  • Low 3.7

    Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path

    Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An una…

  • Medium 4.3

    Russh: Missing X25519 zero-point validation in hybrid ML-KEM key exchange

    Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519…

  • High 7.5

    russh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never opened

    Russh is a Rust SSH client and server library. Prior to 0.63.1, client_read_authenticated in russh/src/client/encrypted.rs forwards CHANNEL_DATA, CHANNEL_EXTENDED_DATA, CHANNEL_EOF, CHANNEL_CLOSE, CHANNEL_OPEN_FAILURE, CHANNEL_SUCCESS, CHANNEL_FAILURE, and CH…

  • Low 3.7

    russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic

    Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote …

  • Medium 6.5

    Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey

    Russh is a Rust SSH client and server library. Prior to 0.63.2, an authenticated remote peer can send SSH_MSG_KEXINIT without the required SSH_MSG_KEX_ECDH_INIT and then flood SSH_MSG_CHANNEL_OPEN messages while SessionKexState::InProgress prevents priority_r…

  • Medium 6.2

    pageant: Out-of-bounds read / oversized allocation in `pageant` MemoryMap::read via a malicious Pageant agent (Windows)

    pageant provides a [PageantStream] type that implements [AsyncRead] and [AsyncWrite] traits and can be used to talk to a running Pageant instance. Prior to pageant 0.2.3, the Windows pageant crate's pageant/src/wmmessage.rs MemoryMap::read function trusts a p…

  • Medium 5.9
    CVE-2026-12345 Public exploit

    Race condition in tempfile.TemporaryDirectory cleanup allows deleting files outside the temporary directory

    The cleanup of tempfile.TemporaryDirectory is vulnerable to a race condition. An attacker who can modify the tree during cleanup can replace a directory with a symbolic link, causing files outside of the temporary directory to be deleted or have their permiss…

  • High 8.6

    Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth

    A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap b…

  • High 8.6

    Libsoup: libsoup: heap buffer overflow during websocket client-frame masking

    A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, causing a heap buffer o…

  • High 8.6

    Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth

    A flaw was found in libsoup. When max-incoming-payload-size is unlimited (0), SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflow while reading frame …

  • High 8.2

    Libsoup: libsoup: heap buffer overflow via uninitialized length in data-uri base64 decoding

    A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length…

  • High 8.6

    Libsoup: libsoup: heap buffer overflow during websocket message reassembly

    A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequately cap total message size against the limits of the underlying buffer type. A remote peer could send fragments that caused size truncation …

  • High 8.6

    Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion

    A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the do…

  • Low 3.7

    ImageMagick before 7.1.2-32 and 6.9.13-57 Uninitialized Heap Memory Disclosure in GIF Decoder

    ImageMagick versions before 7.1.2-32 and 6.9.13-57 contain uninitialized heap memory disclosure in the GIF decoder's application extension handler in coders/gif.c. Attackers can craft malicious GIF files that cause the number parser to read uninitialized heap…

  • Medium 5.9

    libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc

    libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap …

  • Low 2.3

    Serialize JavaScript: Cross-site scripting (XSS) via unescaped </script> in serialized function bodies

    Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. From 7.1.1 until 7.1.2, function values serialized by serialize-javascript are not fully protected against script-closing tags in attacker…

  • High 8.9

    urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory

    urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a l…

  • High 7.5

    QUIC: Unbounded RETIRE_CONNECTION_ID Backlog

    Issue summary: A malicious remote peer may flood the local QUIC stack with NEW_CONNECTION_ID frames by avoiding a limit check on how many connection IDs the remote QUIC stack can use. Impact summary: The local QUIC stack sends a RETIRE_CONN_ID frame for every…

  • High 7.5

    Use-After-Free in X.509 Extension Cache Under Concurrent Use

    Issue summary: The first concurrent use of the same X.509 certificate by several threads may cause its cached extension data to be freed while another thread is still using it. Impact summary: A remote, unauthenticated peer could crash a multi-threaded TLS cl…

  • High 8.2

    DTLS Retransmits Handshake Messages From a Stale Buffer Offset

    Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspend…

  • Low 3.7

    Timing Side-Channel in SM2 Signature Generation

    Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over man…

  • Medium 5.3

    Unauthenticated and Undersized DTLS 1.2 AEAD Record Causes DoS

    Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacke…