Release date:
2026-08-31 16:38:11 UTC
Description:
* SECURITY UPDATE: Heap buffer overflow in the bundled zlib extension via
Zlib::GzipReader#ungetc
- debian/patches/CVE-2026-27820.patch: in zstream_buffer_ungets()
(ext/zlib/zlib.c) the output buffer was expanded only when it was
already full (rb_str_capacity(z->buf) <= ZSTREAM_BUF_FILLED(z)), so a
large ungetc payload memmove()'d and wrote past the allocation. Make
the expansion unconditional via zstream_expand_buffer_into(z, len),
which guarantees capacity for filled + len before the memmove. Also
backports the upstream regression test test_ungetc_buffer_underflow.
- CVE-2026-27820
Updated packages:
-
alt-ruby35_3.5.0~preview1-4_amd64.deb
sha:ca3f896ca939973feb049f731f41b5085f40d03c
-
alt-ruby35-bundled-gems_3.5.0~preview1-4_amd64.deb
sha:5f8d1a057faf5efca595d1faf706b4629c6df8eb
-
alt-ruby35-default-gems_3.5.0~preview1-4_amd64.deb
sha:a0ff54843da3c752adbd40887698525a84e8b5ea
-
alt-ruby35-devel_3.5.0~preview1-4_amd64.deb
sha:27fcdf07e3bd841ee720e0814777a55edc583547
-
alt-ruby35-doc_3.5.0~preview1-4_amd64.deb
sha:a6c440388a170a1bb7c9f07737a5a20f79b776a8
-
alt-ruby35-libs_3.5.0~preview1-4_amd64.deb
sha:e336b9d79316c32060483c5f34a4fcc332ab324c
-
alt-ruby35-rubygem-bigdecimal_3.1.9-4_amd64.deb
sha:2366d08486b8bc430c837e229acd266ca355b917
-
alt-ruby35-rubygem-bundler_2.7.0.dev-4_amd64.deb
sha:d257ee8a384ebb52734c8c8c829780f0fa6ac3eb
-
alt-ruby35-rubygem-io-console_0.8.0-4_amd64.deb
sha:d38ff925ca62d86db29490437b2e5d3e41f99a17
-
alt-ruby35-rubygem-irb_1.15.2-4_amd64.deb
sha:1b27cec00ee33366b778ac7cb43228aeccbc5d60
-
alt-ruby35-rubygem-json_2.10.2-4_amd64.deb
sha:19a756500c858a9363b974507c0e3f5b7fe433db
-
alt-ruby35-rubygem-minitest_5.25.5-4_amd64.deb
sha:f03b03dbf3cbd3d2f604c03d220bc269f2d5f915
-
alt-ruby35-rubygem-power-assert_2.0.5-4_amd64.deb
sha:9ec3d7148e1b92897003b0341e47515c691bc7cf
-
alt-ruby35-rubygem-psych_5.2.3-4_amd64.deb
sha:017d60a98afdd0610842ff6360e5628aa7601ba8
-
alt-ruby35-rubygem-racc_1.8.1-4_amd64.deb
sha:a676c804c35c1c8d779e52befb12fb3f1f68797b
-
alt-ruby35-rubygem-rake_13.2.1-4_amd64.deb
sha:df95b2252e635b9c79b1cca1b8fd44ea87db4af1
-
alt-ruby35-rubygem-rbs_3.9.2-4_amd64.deb
sha:e788d40bca5bf0fa95ff71fd60d13418d278cc7d
-
alt-ruby35-rubygem-rdoc_6.13.1-4_amd64.deb
sha:9d3a8bead4b056f22954bb0eb3c3a96048a85aee
-
alt-ruby35-rubygem-rexml_3.4.1-4_amd64.deb
sha:51d878eee6a973ce7f75d1bddc04cf4c043ff31d
-
alt-ruby35-rubygem-rss_0.3.1-4_amd64.deb
sha:b59455e3dbe57a8b66d3e23c8e9a710cee0e44cb
-
alt-ruby35-rubygem-test-unit_3.6.8-4_amd64.deb
sha:af0ed3504048d8395ca3f6b47b89d878ec57596d
-
alt-ruby35-rubygem-typeprof_0.30.1-4_amd64.deb
sha:96c50ccbc92e22064340a7489f2cb773eea78b91
-
alt-ruby35-rubygems_3.7.0.dev-4_amd64.deb
sha:b4f4cc95bb695a4edee5a92f88728a74df8f0a4e
-
alt-ruby35-rubygems-devel_3.7.0.dev-4_amd64.deb
sha:38acae76d359222cdc58f4948d25a7cb4a8367b2
Notes:
This page is generated automatically and has not been checked for errors. For clarification or
corrections please contact the
CloudLinux Packaging Team.
