"Issue 1: File descriptor exhaustion in polkit (GHSL-2021-077) The function polkit_system_bus_name_get_creds_sync is used to get the uid and pid of the process requesting the action. It does this by sending the unique bus name of the requesting process, which is typically something like “:1.96”, to dbus-daemon, in two consecutive D-Bus method calls. The same callback function, on_retrieved_unix_uid_pid, is used to handle both replies. The replies are handled during the while-loop on line 435. But notice that the loop can stop early if an error occurs. In other words, if an error occurs then the loop might stop after only one of the two replies has been received. When this happens, the refcount of tmp_context never returns to zero. This causes an eventfd file descriptor to be leaked. The file descriptor quota is usually a relatively small number, like 1024, so it is easy for a file descriptor leak like this to exhaust the quota. When this happens, polkit crashes. Impact This issue may lead to local denial of service, due to polkit crashing."
Upstream issue: https://gitlab.freedesktop.org/polkit/polkit/-/issues/141
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ef7e6d556aac8790982a70acbd5d40130faa2346 commit ef7e6d556aac8790982a70acbd5d40130faa2346 Author: Sam James <sam@gentoo.org> AuthorDate: 2022-02-22 06:11:04 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2022-02-22 06:12:35 +0000 sys-auth/polkit: patch CVE-2021-4115 - Add as patch to 0.120-r3 (new) to be immediately stabilised - Additionally bump to 0.120_p20220221 (only difference from last snapshot is a test timeout fix + this CVE-2021-4115 patch) but we'll hold off on stabling that given we only added the previous snapshot a few days ago. Bug: https://bugs.gentoo.org/833574 Signed-off-by: Sam James <sam@gentoo.org> sys-auth/polkit/Manifest | 1 + .../polkit/files/polkit-0.120-CVE-2021-4115.patch | 78 +++++++++++++ sys-auth/polkit/polkit-0.120-r3.ebuild | 123 ++++++++++++++++++++ sys-auth/polkit/polkit-0.120_p20220221.ebuild | 126 +++++++++++++++++++++ 4 files changed, 328 insertions(+)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ae69131d4bef75f0d9e58dbb799976f7e15a7caa commit ae69131d4bef75f0d9e58dbb799976f7e15a7caa Author: Sam James <sam@gentoo.org> AuthorDate: 2022-03-18 06:40:19 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2022-03-18 06:40:19 +0000 sys-auth/polkit: drop 0.120-r2 Bug: https://bugs.gentoo.org/833574 Signed-off-by: Sam James <sam@gentoo.org> sys-auth/polkit/polkit-0.120-r2.ebuild | 121 --------------------------------- 1 file changed, 121 deletions(-)
Note that cleanup not fully done as 0.117-r3 remains in tree, but we'll stable new Duktape snapshot soon.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=76caeda5c0ae4a7045d321f32ef95e31722434dd commit 76caeda5c0ae4a7045d321f32ef95e31722434dd Author: Sam James <sam@gentoo.org> AuthorDate: 2022-05-15 05:17:19 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2022-05-15 22:09:39 +0000 sys-auth/polkit: drop 0.117-r3, 0.120-r3 Bug: https://bugs.gentoo.org/794052 Bug: https://bugs.gentoo.org/833574 Signed-off-by: Sam James <sam@gentoo.org> sys-auth/polkit/Manifest | 2 - sys-auth/polkit/files/polkit-0.115-elogind.patch | 28 --- .../polkit/files/polkit-0.117-CVE-2021-3560.patch | 29 --- ...lkit-0.118-make-netgroup-support-optional.patch | 248 --------------------- .../polkit/files/polkit-0.120-CVE-2021-4034.patch | 72 ------ .../polkit/files/polkit-0.120-CVE-2021-4115.patch | 78 ------- sys-auth/polkit/metadata.xml | 1 - sys-auth/polkit/polkit-0.117-r3.ebuild | 136 ----------- sys-auth/polkit/polkit-0.120-r3.ebuild | 123 ---------- 9 files changed, 717 deletions(-)
