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Ubuntu

61,840 known vulnerabilities.

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  • High 7.8

    fscrypt: use the mount idmap for the owner check in fscrypt_ioctl_set_policy()

    In the Linux kernel, the following vulnerability has been resolved: fscrypt: use the mount idmap for the owner check in fscrypt_ioctl_set_policy() fscrypt_ioctl_set_policy() calls inode_owner_or_capable() with &nop_mnt_idmap before allowing an encryption poli…

  • Unscored —

    sched_ext: Take cgroup_lock() first in scx_cgroup_lock()

    In the Linux kernel, the following vulnerability has been resolved: sched_ext: Take cgroup_lock() first in scx_cgroup_lock() scx_cgroup_lock() write-locks scx_cgroup_ops_rwsem and then takes cgroup_lock(), which can deadlock through kernfs: scx enable/disable…

  • High 7.8

    sched/psi: Shut down rtpoll_timer in psi_cgroup_free()

    In the Linux kernel, the following vulnerability has been resolved: sched/psi: Shut down rtpoll_timer in psi_cgroup_free() psi_schedule_rtpoll_work() is called locklessly from the scheduler hotpath and can race psi_trigger_destroy() taking down the last rtpol…

  • High 8.1

    ima: Instantiate file_truncate and path_truncate hooks

    In the Linux kernel, the following vulnerability has been resolved: ima: Instantiate file_truncate and path_truncate hooks Instantiate the file_truncate and path_truncate LSM hooks to reset the action cache flags (IMA_DONE_MASK) as soon as truncation is reque…

  • Critical 9.8

    mm/filemap: __filemap_add_folio() restore index before retrying

    In the Linux kernel, the following vulnerability has been resolved: mm/filemap: __filemap_add_folio() restore index before retrying In __filemap_add_folio()'s split-a-conflict loop, xas_set_order() is applied repeatedly: each application modifies xas.xa_index…

  • High 8.4

    bpf, sockmap: Fix sk_redir use-after-free in send verdict

    In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix sk_redir use-after-free in send verdict sk_psock_msg_verdict() takes a socket reference for psock->sk_redir. tcp_bpf_send_verdict() copies that pointer while holding the sou…

  • High 7.8

    fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions

    In the Linux kernel, the following vulnerability has been resolved: fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions The BPF verifier and the dynptr abstraction ensure that the memory space referenced by a dynptr remains valid. They do not, however,…

  • Critical 9.8

    sctp: keep chunk->transport in step with the list it is queued on

    In the Linux kernel, the following vulnerability has been resolved: sctp: keep chunk->transport in step with the list it is queued on __sctp_outq_flush_rtx() moves a gap-acked chunk onto another transport's transmitted list without updating chunk->transport: …

  • Critical 9.8

    sctp: fix use-after-free of cached ASCONF chunk

    In the Linux kernel, the following vulnerability has been resolved: sctp: fix use-after-free of cached ASCONF chunk addip_last_asconf caches the outstanding outbound ASCONF chunk. The normal ASCONF-ACK completion path releases the chunk and clears the pointer…

  • Critical 9.8
    CVE-2026-74586 Public exploit

    sctp: clear new_transport when removing a peer

    In the Linux kernel, the following vulnerability has been resolved: sctp: clear new_transport when removing a peer sctp_process_asconf_param() stores a newly added peer transport in asoc->new_transport. After all parameters in the ASCONF chunk have been proce…

  • Unscored —

    thunderbolt: Bound the DROM dual link port number before indexing sw->ports

    In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Bound the DROM dual link port number before indexing sw->ports tb_drom_parse_entry_port() validates the device-supplied header->index against sw->config.max_port_number before in…

  • High 7.1

    RDMA/bnxt_re: zero shared page before exposing to userspace

    In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: zero shared page before exposing to userspace bnxt_re_alloc_ucontext() allocates uctx->shpg via __get_free_page(GFP_KERNEL). The buddy allocator does not zero pages without __GF…

  • Medium 6.1

    hashcat through 7.1.2 Heap Buffer Overflow in outfile_write() via Oversized Username

    hashcat contains a heap-based buffer overflow (out-of-bounds write) in the outfile_write() function in src/outfile.c. When assembling output into a fixed-size buffer (HCBUFSIZ_LARGE, ~16 MB), the function sequentially appends the username, separator, hash, an…

  • Medium 6.2

    NLTK before 3.9.4 Symlink Escape via CorpusReader

    NLTK versions before 3.9.4 contain a symlink escape vulnerability in CorpusReader.open() that allows local attackers to read arbitrary files outside the corpus root. The vulnerability exists because path validation is lexical and does not account for symlink …

  • Medium 6.1

    hashcat through 7.1.2 Off-by-One Out-of-Bounds Heap Write in fgetl()

    hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist con…

  • High 7.5

    NLTK before 3.9.4 Denial of Service via JSONTaggedDecoder

    NLTK versions before 3.9.4 contain an unbounded recursion vulnerability in JSONTaggedDecoder.decode_obj() that allows attackers to cause denial of service by supplying deeply nested JSON structures. Attackers can craft JSON payloads exceeding the recursion li…

  • High 7.8

    hashcat through 7.1.2 Arbitrary File Write via Restore File Option Injection

    hashcat fails to restrict command-line options when parsing restore files, allowing attackers to inject output-redirecting options like --outfile and --potfile-path. Attackers can craft restore files with malicious options to append attacker-controlled conten…

  • Medium 6.5

    NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer

    NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to r…

  • High 7.5

    NLTK StreamBackedCorpusView Bypasses pathsec.ENFORCE Arbitrary File Read

    NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open() directly instead of pathsec.open(). Attackers who control the fileid argument can read arbitrary local fi…

  • Medium 5.3

    NLTK before 3.10.0 SSRF via DNS Resolution Failure

    NLTK before 3.10.0 (affected versions <= 3.9.4) contains a server-side request forgery (SSRF) vulnerability in the validate_network_url() function in nltk/pathsec.py. The _resolve_hostname() helper catches OSError and ValueError during socket.getaddrinfo() an…

  • High 7.5

    NLTK before 3.10.0 Insecure Default Configuration in pathsec.py

    NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled…

  • Medium 5.9

    NLTK 3.9.4 Path Traversal via FrameNet and NKJP Readers

    NLTK versions before 3.10.0 contain a path traversal vulnerability in FramenetCorpusReader and NKJPCorpusReader that allows attackers to parse XML files outside the corpus root by supplying unsafe selectors or poisoned index state. Attackers can exploit frame…

  • High 7.5

    NLTK FramenetCorpusReader Symlink Sandbox Bypass before 3.10.2

    NLTK versions before 3.10.2 contain a symlink-based sandbox bypass in FramenetCorpusReader that allows attackers to read arbitrary XML files outside the corpus root. Attackers can place symlinks with names containing no path separators inside the corpus subdi…

  • Medium 5.5

    nltk IPIPANCorpusReader Symlink Arbitrary File Read

    nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods that bypass nltk.pathsec validation entirely. Attackers can place a symlink in the corpus root directory and read arbitrary files accessible to…

  • Low 2.5

    NLTK 3.9.4 through 3.10.2 Path Traversal via CrubadanCorpusReader pathsec Bypass

    NLTK 3.9.4 through 3.10.2 contains a path traversal vulnerability in CrubadanCorpusReader. _load_lang_ngrams joins the corpus root with crubadan_code, the column-0 value read from the corpus table.txt mapping file, and opens the result with the builtin open()…

  • High 8.8

    NLTK 3.10.0 through 3.10.2 Remote Code Execution via AllowlistUnpickler Dotted-Name Bypass

    NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowliste…

  • High 7.5

    Netty 4.2.0 through 4.2.16 TLS Hostname Verification Bypass

    Netty (io.netty:netty-handler) versions from 4.2.0.Final through 4.2.16.Final and versions through 4.1.136.Final disable TLS hostname verification on the SslProvider.OPENSSL client path when a plain (non-extended) X509TrustManager is used and Unsafe-based tru…

  • Medium 6.3

    Netty before 4.2.16.Final SOCKS Proxy Null Byte Injection

    Netty (io.netty:netty-codec-socks) versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 (Socks4ClientEncoder) and SOCKS5 (Socks5ClientEncoder) client encoders…

  • High 7.5

    In strongSwan before 6.0.7, identity parsing/cloning is mishandled. Parsed EAP-Identities that result in an empty but n…

  • High 7.5

    Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys

    Tie::Hash::Regex versions before 2.0.0 for Perl will throw an exception on unparseable lookup keys. The FETCH, EXISTS and DELETE methods throw an exception when on malformed regular expressions. Each method falls back to a regex match when the key is not alre…

  • High 7.2

    FORT-validator Vulnerable to RRDP Shared Snapshot Cache Poisoning

    FORT Validator is a Resource Public Key Infrastructure (RPKI) relying-party validator that produces validated route-origin data. FORT Validator versions through 1.6.7 contain an origin-validation error in their RRDP processing: a delegated CA under the same T…

  • High 7.4

    WeeChat has Non-Constant-Time Password Hash Comparison in Relay Authentication

    WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp) to verify password hashes and plaintext pas…

  • Medium 6.5

    WeeChat has a Decompression Bomb in Relay WebSocket (DoS)

    WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relay_websocket_inflate() has no upper bound on output size. An authenticated re…

  • High 8.8

    libvncclient Tight decoder has an attacker-controlled heap out-of-bounds write

    LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious (or man-in-the-middle) VNC server can force a connecting `libvncclient` to write attacker-controlled data past the end of its framebuffer. This i…

  • Medium 6.5

    PDFio < 1.6.5 Dangling Pointer via Dictionary String-Formatting

    PDFio before 1.6.5 contains a dangling pointer vulnerability in the dictionary string-formatting function that stores a pointer to a stack-local buffer in the document dictionary without copying the string value. In multi-threaded or pooled-request environmen…

  • High 8.7

    kin-openapi: Uncontrolled resource consumption in openapi3filter deepObject query parameter decoding

    kin-openapi is a Go project for handling OpenAPI files. From 0.124.0 until 0.142.0, openapi3filter.sliceMapToSlice in openapi3filter/req_resp_decoder.go converts attacker-controlled sparse indexes from a deepObject query parameter into a dense slice by alloca…

  • High 7.5

    kin-openapi openai3filter: nil-pointer panic in ConvertErrors on malformed multipart/form-data body enables unauthenticated DoS

    kin-openapi is a Go project for handling OpenAPI files. From 0.10.0 until 0.141.0, openapi3filter.convertParseError in openapi3filter/validation_error_encoder.go dereferences e.Parameter.In without checking whether e.Parameter is nil. A malformed non-string s…

  • Medium 6.3

    Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive

    Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory…

  • High 7.1

    GNU Emacs < 31.0.91 Heap Over-Read via PBM/PPM/PGM Image Loader

    GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image di…

  • Medium 5.1

    Miniflux 2: Open Redirect Bypass

    Miniflux 2 is an open source feed reader. Prior to 2.3.1, IsRelativePath in internal/urllib/url.go accepts redirect targets containing backslashes because Go URL parsing treats them as path characters. Browser backslash normalization converts them to forward …