From: Anil Dongare <[email protected]> Pick the upstream patch [1] as mentioned in [2].
[1] https://github.com/OpenPrinting/cups/commit/730347c5bbd5e1271149c6739aa858c0c83a7568 [2] https://security-tracker.debian.org/tracker/CVE-2026-34978 Signed-off-by: Anil Dongare <[email protected]> --- meta/recipes-extended/cups/cups.inc | 1 + .../cups/cups/CVE-2026-34978.patch | 102 ++++++++++++++++++ 2 files changed, 103 insertions(+) create mode 100644 meta/recipes-extended/cups/cups/CVE-2026-34978.patch diff --git a/meta/recipes-extended/cups/cups.inc b/meta/recipes-extended/cups/cups.inc index ec9392b73d..e06bbc0a2a 100644 --- a/meta/recipes-extended/cups/cups.inc +++ b/meta/recipes-extended/cups/cups.inc @@ -23,6 +23,7 @@ SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/cups-${PV}-source.tar.gz \ file://CVE-2026-27447.patch \ file://CVE-2026-27447-regression_p1.patch \ file://CVE-2026-27447-regression_p2.patch \ + file://CVE-2026-34978.patch \ " GITHUB_BASE_URI = "https://github.com/OpenPrinting/cups/releases"; diff --git a/meta/recipes-extended/cups/cups/CVE-2026-34978.patch b/meta/recipes-extended/cups/cups/CVE-2026-34978.patch new file mode 100644 index 0000000000..d05bc85588 --- /dev/null +++ b/meta/recipes-extended/cups/cups/CVE-2026-34978.patch @@ -0,0 +1,102 @@ +From ab6ab965de6890aed4df39c97f7cd708fd5cb00c Mon Sep 17 00:00:00 2001 +From: Michael R Sweet <[email protected]> +Date: Tue, 31 Mar 2026 14:18:26 -0400 +Subject: [PATCH] Fix RSS notifier. + +CVE: CVE-2026-34978 +Upstream-Status: Backport [https://github.com/OpenPrinting/cups/commit/730347c5bbd5e1271149c6739aa858c0c83a7568] + +Backport Changes: +- Rebase CHANGES.md placement and scheduler/ipp.c subscription context to the + CUPS 2.4.11 source carried by this recipe. + +(cherry picked from commit 730347c5bbd5e1271149c6739aa858c0c83a7568) +Signed-off-by: Anil Dongare <[email protected]> +--- + CHANGES.md | 2 ++ + notifier/rss.c | 20 ++++++++++++++------ + scheduler/ipp.c | 12 ++++++++++++ + 3 files changed, 28 insertions(+), 6 deletions(-) + +diff --git a/CHANGES.md b/CHANGES.md +index 7a5e8813f..429ee874f 100644 +--- a/CHANGES.md ++++ b/CHANGES.md +@@ -21,9 +21,11 @@ Changes in CUPS v2.4.11 (2024-09-30) + Changes in CUPS v2.4.10 (2024-06-18) + ------------------------------------ + + - CVE-2026-27447: The scheduler treated local user and group names as case- + insensitive. +- Fixed cupsd crash if user does not exist (Issue #1555) ++- CVE-2026-34978: The RSS notifier could write outside the scheduler's RSS ++ directory. + - Fixed error handling when reading a mixed `1setOf` attribute. + - Fixed scheduler start if there is only domain socket to listen on (Issue #985) + +diff --git a/notifier/rss.c b/notifier/rss.c +index f17e1494c..250ad877e 100644 +--- a/notifier/rss.c ++++ b/notifier/rss.c +@@ -1,11 +1,12 @@ + /* + * RSS notifier for CUPS. + * +- * Copyright © 2020-2024 by OpenPrinting. +- * Copyright 2007-2015 by Apple Inc. +- * Copyright 2007 by Easy Software Products. ++ * Copyright © 2020-2026 by OpenPrinting. ++ * Copyright © 2007-2015 by Apple Inc. ++ * Copyright © 2007 by Easy Software Products. + * +- * Licensed under Apache License v2.0. See the file "LICENSE" for more information. ++ * Licensed under Apache License v2.0. See the file "LICENSE" for more ++ * information. + */ + + /* +@@ -80,6 +81,7 @@ main(int argc, /* I - Number of command-line arguments */ + http_status_t status; /* HTTP GET/PUT status code */ + char filename[1024], /* Local filename */ + newname[1024]; /* filename.N */ ++ struct stat fileinfo; /* Local file information */ + cups_lang_t *language; /* Language information */ + ipp_attribute_t *printer_up_time, /* Timestamp on event */ + *notify_sequence_number,/* Sequence number */ +@@ -111,9 +113,9 @@ main(int argc, /* I - Number of command-line arguments */ + + if (httpSeparateURI(HTTP_URI_CODING_ALL, argv[1], scheme, sizeof(scheme), + username, sizeof(username), host, sizeof(host), &port, +- resource, sizeof(resource)) < HTTP_URI_OK) ++ resource, sizeof(resource)) < HTTP_URI_OK || strstr(resource, "../") != NULL) + { +- fprintf(stderr, "ERROR: Bad RSS URI \"%s\"!\n", argv[1]); ++ fprintf(stderr, "ERROR: Bad RSS URI \"%s\".\n", argv[1]); + return (1); + } + +@@ -209,6 +211,12 @@ main(int argc, /* I - Number of command-line arguments */ + snprintf(filename, sizeof(filename), "%s/rss%s", cachedir, resource); + snprintf(newname, sizeof(newname), "%s.N", filename); + ++ if (!lstat(filename, &fileinfo) && !S_ISREG(fileinfo.st_mode)) ++ { ++ fprintf(stderr, "ERROR: Local RSS path \"%s\" is not a file.\n", filename); ++ return (1); ++ } ++ + httpAssembleURIf(HTTP_URI_CODING_ALL, baseurl, sizeof(baseurl), "http", + NULL, server_name, atoi(server_port), "/rss%s", resource); + } +diff --git a/scheduler/ipp.c b/scheduler/ipp.c +index 2d80a960e..2dc7376c1 100644 +--- a/scheduler/ipp.c ++++ b/scheduler/ipp.c +@@ -1985,6 +1985,12 @@ add_job_subscriptions( + "notify-status-code", IPP_ATTRIBUTES); + return; + } ++ else if (!strcmp(scheme, "rss") && strstr(resource, "../") != NULL) ++ { ++ send_ipp_status(con, IPP_STATUS_ERROR_NOT_POSSIBLE, _("Bad notify-recipient-uri URI \"%s\"."), recipient); ++ ippAddInteger(con->response, IPP_TAG_SUBSCRIPTION, IPP_TAG_ENUM, "notify-status-code", IPP_STATUS_ERROR_ATTRIBUTES_OR_VALUES); -- 2.44.4
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