mirrors/poky
1
0
Fork 0
mirror of https://git.yoctoproject.org/poky synced 2026-06-20 19:53:49 +02:00
Code Issues Packages Projects Releases Wiki Activity

python3: fix CVE-2026-6100

Browse Source 
Pick patch from [1] also mentioned at NVD report in [2]

[1] c3cf71c336
[2] https://nvd.nist.gov/vuln/detail/CVE-2026-6100
[3] https://security-tracker.debian.org/tracker/CVE-2026-6100

(From OE-Core rev: 0bc9ba624b2fbeff3bf7e2ee4d2858b9c702fca1)

Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>
This commit is contained in:
Hitendra Prajapati
2026-04-29 17:59:02 +05:30
committed by Paul Barker
parent d30ed7ed1b
commit 0c205679dd
2 changed files with 76 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
meta/recipes-devtools/python/python3/CVE-2026-6100.patch Normal file
View File

@@ -0,0 +1,75 @@
From c3cf71c3366fe49acb776a639405c0eea6169c20 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
<31488909+miss-islington@users.noreply.github.com>
Date: Mon, 13 Apr 2026 03:35:24 +0200
Subject: [PATCH] [3.13] gh-148395: Fix a possible UAF in
`{LZMA,BZ2,_Zlib}Decompressor` (GH-148396) (#148479)
gh-148395: Fix a possible UAF in `{LZMA,BZ2,_Zlib}Decompressor` (GH-148396)
Fix dangling input pointer after `MemoryError` in _lzma/_bz2/_ZlibDecompressor.decompress
(cherry picked from commit 8fc66aef6d7b3ae58f43f5c66f9366cc8cbbfcd2)
Co-authored-by: Stan Ulbrych <stan@python.org>
CVE: CVE-2026-6100
Upstream-Status: Backport [https://github.com/python/cpython/commit/c3cf71c3366fe49acb776a639405c0eea6169c20]
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
---
.../Security/2026-04-10-16-28-21.gh-issue-148395.kfzm0G.rst | 5 +++++
Modules/_bz2module.c | 1 +
Modules/_lzmamodule.c | 1 +
Modules/zlibmodule.c | 1 +
4 files changed, 8 insertions(+)
create mode 100644 Misc/NEWS.d/next/Security/2026-04-10-16-28-21.gh-issue-148395.kfzm0G.rst
diff --git a/Misc/NEWS.d/next/Security/2026-04-10-16-28-21.gh-issue-148395.kfzm0G.rst b/Misc/NEWS.d/next/Security/2026-04-10-16-28-21.gh-issue-148395.kfzm0G.rst
new file mode 100644
index 0000000..9502189
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2026-04-10-16-28-21.gh-issue-148395.kfzm0G.rst
@@ -0,0 +1,5 @@
+Fix a dangling input pointer in :class:`lzma.LZMADecompressor`,
+:class:`bz2.BZ2Decompressor`, and internal :class:`!zlib._ZlibDecompressor`
+when memory allocation fails with :exc:`MemoryError`, which could let a
+subsequent :meth:`!decompress` call read or write through a stale pointer to
+the already-released caller buffer.
diff --git a/Modules/_bz2module.c b/Modules/_bz2module.c
index 97bd44b..a732e89 100644
--- a/Modules/_bz2module.c
+++ b/Modules/_bz2module.c
@@ -587,6 +587,7 @@ decompress(BZ2Decompressor *d, char *data, size_t len, Py_ssize_t max_length)
return result;
error:
+ bzs->next_in = NULL;
Py_XDECREF(result);
return NULL;
}
diff --git a/Modules/_lzmamodule.c b/Modules/_lzmamodule.c
index 7bbd656..103a6ef 100644
--- a/Modules/_lzmamodule.c
+++ b/Modules/_lzmamodule.c
@@ -1114,6 +1114,7 @@ decompress(Decompressor *d, uint8_t *data, size_t len, Py_ssize_t max_length)
return result;
error:
+ lzs->next_in = NULL;
Py_XDECREF(result);
return NULL;
}
diff --git a/Modules/zlibmodule.c b/Modules/zlibmodule.c
index f94c57e..9759593 100644
--- a/Modules/zlibmodule.c
+++ b/Modules/zlibmodule.c
@@ -1645,6 +1645,7 @@ decompress(ZlibDecompressor *self, uint8_t *data,
return result;
error:
+ self->zst.next_in = NULL;
Py_XDECREF(result);
return NULL;
}
--
2.50.1

1
meta/recipes-devtools/python/python3_3.12.13.bb
View File

@@ -35,6 +35,7 @@ SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.xz \
file://0001-test_active_children-skip-problematic-test.patch \
file://0001-test_readline-skip-limited-history-test.patch \
file://CVE-2026-1502.patch \
file://CVE-2026-6100.patch \
"
SRC_URI:append:class-native = " \