Updated Debian 13: 13.6 released
July 11th, 2026
The Debian project is pleased to announce the sixth update of its
stable distribution Debian 13 (codename trixie
).
This point release mainly adds corrections for security issues,
along with a few adjustments for serious problems. Security advisories
have already been published separately and are referenced where available.
Please note that the point release does not constitute a new version of Debian
13 but only updates some of the packages included. There is
no need to throw away old trixie
media. After installation,
packages can be upgraded to the current versions using an up-to-date Debian
mirror.
Those who frequently install updates from security.debian.org won't have to update many packages, and most such updates are included in the point release.
New installation images will be available soon at the regular locations.
Upgrading an existing installation to this revision can be achieved by pointing the package management system at one of Debian's many HTTP mirrors. A comprehensive list of mirrors is available at:
Noteworthy updates
fwupd
and Secure Boot CA expiry
fwupd
has been updated to upstream version 2.0.20, which has the ability
to update the Secure Boot certificate authority (CA), Key Exchange Key (KEK) and revocation
(DBX) databases.
The 2013 UEFI Secure Boot CA installed by default on most PCs and
used to sign bootloaders has now expired. Future updates to shim-signed
could therefore lead to systems being unable to boot with Secure Boot enabled.
Users are strongly advised to apply CA
, KEK
and DBX
updates from their system OEM in line with the following guidance:
geoip-database
reverted
For licensing reasons geoip-database
has been reverted to a version
dated approximately December 2019. As a result, applications using this database
might use out-of-date allocation information.
More recent versions of geoip-database
(GeoLite)
are not compatible with the Debian Free Software Guidelines and cannot be
distributed.
Consumers of this data are strongly encouraged to obtain a GeoLite license
directly and cease reliance on the geoip-database
package.
Miscellaneous Bugfixes
This stable update adds a few important corrections to the following packages:
| Package | Reason |
|---|---|
| apache2 | Fix use-after-free issues [CVE-2026-29167 CVE-2026-48913]; fix cross-site scripting issue [CVE-2026-29170]; fix buffer overflow issues [CVE-2026-34355 CVE-2026-34356 CVE-2026-42536]; fix denial of service issues [CVE-2026-42535 CVE-2026-44186 CVE-2026-49975]; fix out of bounds read issues [CVE-2026-43951 CVE-2026-44185]; fix file read issue [CVE-2026-44119]; fix buffer underwrite issue [CVE-2026-44631] |
| archlinux-keyring | Update keys |
| awstats | Prevent freezing on keyword stat |
| base-files | Update for the point release |
| beets | Fix XSS vulnerability [CVE-2026-42052] |
| calibre | Fix unsafe e-book extraction and resource path handling [CVE-2026-30853 CVE-2026-33206]; prevent e-book viewer local file reads and SSRF/exfiltration [CVE-2026-33205]; avoid unsafe catalog rule evaluation; correct XPath and SQL query handling; fix reader-background endpoint path normalisation; improve exception diagnostics |
| cdebootstrap | Rebuild with updated xz-utils |
| chrony | Ensure if-up/down hook scripts exit successfully |
| ckermit | Block remote control of the local kermit by default [CVE-2025-68920]; disable unnecessary OpenSSL version check |
| composer | Fix support for new GitHub token format [CVE-2026-45793] |
| courier | Fix webadmin paths to imapd and imapd-ssl |
| curl | Fix bearer token redirect leaks [CVE-2025-14524 CVE-2026-3783]; correct OpenSSL CA cache reuse [CVE-2025-14819]; fix HTTP Negotiate and proxy connection reuse [CVE-2026-1965 CVE-2026-3784 CVE-2026-5545]; prevent clear-text STARTTLS connection reuse [CVE-2026-4873]; fix SMB use-after-free and wrong share reuse [CVE-2026-3805 CVE-2026-5773]; clear redirected host/proxy/netrc credentials [CVE-2026-6253 CVE-2026-6429]; prevent stale cookie leaks [CVE-2026-6276]; clear proxy Digest state when switching proxies [CVE-2026-7168] |
| dar | Rebuild with updated curl, libgcrypt20, openssl |
| dcmtk | Fix NULL pointer dereference issues [CVE-2022-4981 CVE-2025-14841]; fix memory corruption issues [CVE-2025-2357 CVE-2025-9732 CVE-2025-14607]; fix command injection issue [CVE-2026-5663]; fix buffer overflow issues [CVE-2026-10194 CVE-2026-12805] |
| debian-installer | Bump linux ABI 6.12.94+deb13; rebuild for point release |
| debian-installer-netboot-images | Rebuild from proposed updates |
| debusine | Enforce file upload permissions; restrict artifact relation creation/deletion [CVE-2026-11852]; harden sbuild repository command quoting; reject unsafe .dsc/.changes checksum paths [CVE-2026-11853] |
| deepdiff | Fix class pollution issue [CVE-2025-58367]; fix denial of service issue [CVE-2026-33155] |
| dhcpcd | Fix memory safety issues [CVE-2025-70102 CVE-2026-56113 CVE-2026-56114]; fix IPv6 Router Advertisement information leakage [CVE-2026-56116]; correct control socket lifetime handling [CVE-2026-56117] |
| distrobuilder | Rebuild with updated incus |
| dolphin | Fix sandbox escape issue [CVE-2026-41525] |
| errands | Fix verification of TLS certificates for CalDAV servers [CVE-2025-71063] |
| execnet | Disable unreliable build-time tests |
| fldigi | Force LC_NUMERIC=C.UTF-8 to use proper decimal separator in API and ADIF log files |
| freecad | Fix fanuc post processor; fix build failure on arm64 |
| fwupd | Enable UEFI CA/db/KEK updates for the 2026 Secure Boot certificate transition; fix UEFI PK/KEK/dbx enumeration; fix Thunderbolt controller deployment; correct firmware update regressions; update fwupd hardware support and tests |
| gambas3 | Fix Qt component loading |
| gdown | Fix arbitray file write issue [CVE-2026-40491] |
| geoip | Reinstate generator scripts, relied upon by geoip-database |
| geoip-database | Revert to a DFSG-compatible version |
| giflib | Fix memory corruption issues [CVE-2026-23868 CVE-2026-26740] |
| gimp | Fix integer overflow issues [CVE-2026-4154 CVE-2026-40915] |
| gnupg2 | Rebuild with updated libgcrypt20 |
| gnustep-sqlclient | Remove Multi-Arch: same |
| graphite2 | Fix out-of-bounds write [CVE-2026-50593] |
| horizon | Fix escaping of special characters in project |
| ironic | Fix credential forwarding from configuration molds [CVE-2026-42997]; fix IPMI console command injection [CVE-2026-42510]; sandbox kickstart template rendering [CVE-2026-44916]; prevent conductor thread exhaustion from file special devices [CVE-2026-44919]; restrict unsafe file image paths; improve image download validation and checksumming; correct Redfish power, boot and firmware workflows; fix inspection rule validation and hook failures; avoid stuck service/deploy states |
| isc-kea | Fix denial of service issue [CVE-2026-3608] |
| isenkram | Handle usr-merge migration in update-fw-list; update generated firmware lists |
| keystone | Fix behaviour of user_enabled_invert [CVE-2026-40683]; prevent unauthorized EC2 credential creation and deletion [CVE-2026-33551] |
| libapache-session-browseable-perl | Improve entropy source [CVE-2026-8503] |
| libass | Fix out of bounds read and write issues |
| libbytes-random-secure-perl | Fix incorrect usage of seed in PRNG [CVE-2026-11625] |
| libcaca | Prevent undefined behaviour in overflow check [CVE-2026-42046] |
| libcrypt-pbkdf2-perl | Change default hash algorithm to HMAC-SHA256 and default iterations to 600,000 [CVE-2026-9641]; generate salts using Crypt::URandom [CVE-2026-9638]; use a constant-time comparison in `validate` to avoid timing attacks [CVE-2017-20240] |
| libcrypt-urandom-perl | Fix buffer overflow issue [CVE-2026-2474] |
| libhtml-parser-perl | Fix heap-use-after-free in _decode_entities [CVE-2026-8829] |
| libnet-cidr-lite-perl | Fix IP/CIDR parser validation: reject non-ASCII digits and trailing newlines [CVE-2026-55190]; reject zero-padded CIDR masks [CVE-2026-45191] |
| libreoffice | Gracefully handle failure in graphite2 |
| libslirp | Fix memory disclosure issue [CVE-2026-9539] |
| libtasn1-6 | Fix buffer overflow issue [CVE-2025-13151] |
| libvncserver | Fix buffer overflow and out-of-bounds write [CVE-2026-44988 CVE-2026-50538] |
| libxml-libxml-perl | Fix out-of-bounds read [CVE-2026-8177] |
| libxml2 | Fix RelaxNG include recursion limits [CVE-2026-0989]; prevent XML and SGML catalog recursion/resource exhaustion [CVE-2025-8732 CVE-2026-0990 CVE-2026-0992]; fix xmllint shell memory leak [CVE-2026-1757]; correct XML writer and Schematron error-path leaks; avoid RelaxNG validation use-after-free; update regression tests |
| libxpm | Fix out of bounds read issue [CVE-2026-4367] |
| linuxcnc | Sanitize module names |
| lxml-html-clean | Fix filter bypass issue [CVE-2026-28348]; fix tag injection issue [CVE-2026-28350] |
| mesa | Fix WebGPU/SPIR-V allocation handling [CVE-2026-40393] |
| miniupnpd | Fix integer underflow issue [CVE-2026-5720] |
| modsecurity | Prevent denial of service in hexDecode handling [CVE-2026-30923]; prevent denial of service in SSN/CPF/SVNR verification [CVE-2026-42268] |
| mutt | Fix buffer truncation issues [CVE-2026-43859 CVE-2026-43860 CVE-2026-43861]; fix mishandling of imap_auth_gss security level [CVE-2026-43862]; fix denial of service issue [CVE-2026-43863]; fix NULL pointer dereference issue [CVE-2026-43864] |
| mxml | Fix out-of-bounds read [CVE-2026-5037] |
| nbconvert | Fix arbitrary file read/write issues [CVE-2026-39377 CVE-2026-39378] |
| neutron | Fix tagging policy bypass |
| nss | Improve handling of escape sequences in pk11uri_ParseAttributes [CVE-2026-12318] |
| ojalgo | Reduce frequency of built-time test failures |
| opencc | Fix out-of-bounds read issue [CVE-2025-15536] |
| openslide | Fix possible code execution issue [CVE-2026-48977] |
| php-guzzlehttp-psr7 | Fix Host authority validation [CVE-2026-48998]; reject control characters in URI hosts [CVE-2026-49214]; harden ServerRequest globals handling; normalise global header values; encode literal plus signs in query helpers |
| php-league-csv | Fix build time test with PHP >=8.4.14 |
| php-twig | Security update |
| pillow | Followup fix for CVE-2026-42310 |
| poco | Fix segmentation fault [CVE-2025-6375] |
| poetry | Fix arbitrary file write issue [CVE-2026-34591] |
| poppler | Fix invalid signature creation issue |
| postfix | New upstream stable release; fix denial of service issue [CVE-2026-43964]; keep daemon running during upgrades |
| protobuf | Fix parser recursion limits [CVE-2024-7254 CVE-2025-4565 CVE-2026-0994 CVE-2026-6409] |
| psd-tools | Fix denial of service issue [CVE-2026-27809] |
| pupnp | Fix SSRF port confusion issue [CVE-2026-41682] |
| pymdown-extensions | Fix regular expression-based denial of service issue [CVE-2025-68142] |
| pyopenssl | Fix handling of exceptions and connection cancelling [CVE-2026-27448]; fix buffer overflow in DTLS cookie callback [CVE-2026-27459] |
| pytest-httpbin | Disable unreliable build-time test |
| python-daphne | Fix denial of service issue [CVE-2026-44545]; fix header injection issue [CVE-2026-44546] |
| python-django | Update test suite following changes in python3.13 |
| python-dynaconf | Fix Server-Side Template Injection issue [CVE-2026-33154] |
| python-grpc-tools | Fix TypeError in command.build_package_protos |
| python-handy-archives | Fix end of central diretory locator for Zip64 |
| python-idna | Fix denial of service issue [CVE-2026-45409] |
| python-iniparse | Fix race condition in build-time tests |
| python-jwcrypto | Fix denial of service issue [CVE-2026-39373] |
| python-markdown | Adapt to changes in Python's html.parser module |
| python-marshmallow | Fix denial of service issue [CVE-2025-68480] |
| python-memray | Fix cross-site scripting issue [CVE-2026-32722] |
| python-virtualenv | Fix time-of-check / time-of-use issues [CVE-2026-22702] |
| python-webob | Fix open redirect issue [CVE-2026-44889] |
| python-xmltodict | Fix XML injection issue [CVE-2025-9375] |
| python3.13 | Fix a crash in SNI callback when the SSL object is gone; fix reference leaks in ssl.SSLContext objects; avoid garbage collecting objects too early when sharing __dict__; fix CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host[CVE-2026-1502]; fix denial of service issues [CVE-2026-3276 CVE-2026-9669]; fix insufficient escaping issue [CVE-2026-6019]; fix path traversal issue [CVE-2026-7774]; fix server-side request forgery issue [CVE-2026-8328] |
| qemu | New upstream stable release; security fixes [CVE-2024-6519 CVE-2026-2243 CVE-2026-3195 CVE-2026-3196 CVE-2026-3842 CVE-2026-3886 CVE-2026-3890 CVE-2026-41435 CVE-2026-41436 CVE-2026-41437 CVE-2026-41438 CVE-2026-41439 CVE-2026-41440 CVE-2026-5744 CVE-2026-5761 CVE-2026-5763 CVE-2026-6502 CVE-2026-8341 CVE-2026-48002 CVE-2026-48003 CVE-2026-48004 CVE-2026-48914 CVE-2026-48915 CVE-2026-6425 CVE-2026-8343] |
| qtmir | Fix Lomiri rendering, scaling, focus handling, and session crash issues; correct stale window and dead surface cleanup; ensure Xwayland applications inherit DISPLAY; improve Asahi Linux rendering provider selection |
| rauc | Fix improper signing of large bundles [CVE-2026-34155] |
| resource-agents | Fix syntax error |
| rhino | Fix denial of service issue [CVE-2025-66453] |
| rlottie | Fix out-of-bounds read issue [CVE-2026-10305]; fix denial of service issues [CVE-2026-47319 CVE-2026-47320] |
| rsync | Reject excessively long HTTP proxy response lines [CVE-2026-45232] |
| rtl-433 | Fix buffer overflow issue [CVE-2025-34450] |
| ruby-css-parser | Fix validation of HTTPS certificates for remote CSS [CVE-2026-44312] |
| rust-time | Fix denial of service [CVE-2026-25727] |
| samba | New upstream stable release |
| shim | New upstream release; build with default gcc; set SBAT revocation level to 2025021800 |
| shim-helpers-amd64-signed | Update to shim 16.1-2~deb13u1 |
| shim-helpers-arm64-signed | Update to shim 16.1-2~deb13u1 |
| shim-signed | Ensure Secure Boot compatibility with 2023 Microsoft UEFI CA; check for likely boot issues before installation; combine and verify multiple shim signatures; update signed shim binaries |
| skanpage | Fix data leakage issue [CVE-2025-55174] |
| smartdns | Fix buffer overflow issue [CVE-2026-1425] |
| squirrel3 | Fix sandbox escape [CVE-2021-41556] |
| sshfs-fuse | Add contain_symlinks option to prevent symlink escape attacks [CVE-2026-47187]; reject hostname option injection via bracketed mount source [CVE-2026-48711] |
| starman | Fix request smuggling issue [CVE-2026-40560] |
| symfony | Security update |
| tigervnc | Prevent other users reading x0vncserver screen [CVE-2026-34352] |
| user-mode-linux | Rebuild with updated linux |
| vitrage | Fix remote code execution vulnerability [CVE-2026-28370] |
| wireless-regdb | New upstream stable release; update regulatory information for several countries |
| wireshark | New upstream stable release; fix denial of service issue [CVE-2026-9759] |
| xz-utils | Fix buffer overflow issue [CVE-2026-34743] |
Security Updates
This revision adds the following security updates to the stable release. The Security Team has already released an advisory for each of these updates:
Debian Installer
The installer has been updated to include the fixes incorporated into stable by the point release.
URLs
The complete lists of packages that have changed with this revision:
The current stable distribution:
Proposed updates to the stable distribution:
stable distribution information (release notes, errata etc.):
Security announcements and information:
About Debian
The Debian Project is an association of Free Software developers who volunteer their time and effort in order to produce the completely free operating system Debian.
Contact Information
For further information, please visit the Debian web pages at https://www.debian.org/, send mail to <press@debian.org>, or contact the stable release team at <debian-release@lists.debian.org>.