From: Bhavesh R Maheshwari <[email protected]> Pick patch from [1] also mentioned at NVD report in [2]
[1] https://github.com/vim/vim/commit/497f931f85339d175d7f69588dd249e8ccfed41b [2] https://nvd.nist.gov/vuln/detail/CVE-2026-57455 Signed-off-by: Bhavesh R Maheshwari <[email protected]> --- .../vim/files/CVE-2026-57455.patch | 77 +++++++++++++++++++ meta/recipes-support/vim/vim.inc | 1 + 2 files changed, 78 insertions(+) create mode 100644 meta/recipes-support/vim/files/CVE-2026-57455.patch diff --git a/meta/recipes-support/vim/files/CVE-2026-57455.patch b/meta/recipes-support/vim/files/CVE-2026-57455.patch new file mode 100644 index 0000000000..c87b069173 --- /dev/null +++ b/meta/recipes-support/vim/files/CVE-2026-57455.patch @@ -0,0 +1,77 @@ +From b4ed0eb9ed412eb769a13d50932978593b062623 Mon Sep 17 00:00:00 2001 +From: Christian Brabandt <[email protected]> +Date: Sun, 21 Jun 2026 19:20:03 +0000 +Subject: [PATCH] patch 9.2.0698: [security]: Out-of-bounds write with + soundfold() + +Problem: [security]: Out-of-bounds write with soundfold() + (cipher-creator) +Solution: Add an abort condition to the for loop to validate the buffer + size. + +Github Security Advisory: +https://github.com/vim/vim/security/advisories/GHSA-q8mh-6qm3-25g4 + +Supported by AI + +Signed-off-by: Christian Brabandt <[email protected]> + +CVE: CVE-2026-57455 +Upstream-Status: Backport [https://github.com/vim/vim/commit/497f931f85339d175d7f69588dd249e8ccfed41b] + +Backport Changes: +- Discarded the changes from src/version.c file as it includes patch +number + +Signed-off-by: Bhavesh R Maheshwari <[email protected]> +--- + src/spell.c | 2 +- + src/testdir/test_spellfile.vim | 21 +++++++++++++++++++++ + 2 files changed, 22 insertions(+), 1 deletion(-) + +diff --git a/src/spell.c b/src/spell.c +index 01eb57e3a..060a2251a 100644 +--- a/src/spell.c ++++ b/src/spell.c +@@ -3270,7 +3270,7 @@ spell_soundfold_sofo(slang_T *slang, char_u *inword, char_u *res) + else + { + // The sl_sal_first[] table contains the translation. +- for (s = inword; (c = *s) != NUL; ++s) ++ for (s = inword; (c = *s) != NUL && ri < MAXWLEN - 1; ++s) + { + if (VIM_ISWHITE(c)) + c = ' '; +diff --git a/src/testdir/test_spellfile.vim b/src/testdir/test_spellfile.vim +index 8f3ef4907..b0b152b8c 100644 +--- a/src/testdir/test_spellfile.vim ++++ b/src/testdir/test_spellfile.vim +@@ -1197,4 +1197,25 @@ func Test_mkspell_no_buffer_overflow() + endfunc + + ++" A word longer than MAXWLEN must not overflow the soundfold result buffer in ++" the single-byte SOFO branch of spell_soundfold_sofo(). ++func Test_soundfold_overflow() ++ let _enc=&enc ++ set enc=latin1 ++ call writefile(['SOFOFROM ab', 'SOFOTO xy'], 'Xtest.aff', 'D') ++ call writefile(['1', 'foo'], 'Xtest.dic', 'D') ++ mkspell! Xtest Xtest ++ defer delete('Xtest.latin1.spl') ++ defer delete('Xtest.latin1.sug') ++ setl spelllang=Xtest.latin1.spl spell ++ ++ " Before the fix the copy loop wrote one byte per input byte into a ++ " MAXWLEN (254) stack buffer with no upper bound, smashing the stack. ++ let sound = soundfold(repeat('ab', 300)) ++ call assert_true(strlen(sound) < 254, 'soundfold result exceeds MAXWLEN') ++ ++ set spell& spelllang& ++ let &enc = _enc ++endfunc ++ + " vim: shiftwidth=2 sts=2 expandtab +-- +2.43.0 + diff --git a/meta/recipes-support/vim/vim.inc b/meta/recipes-support/vim/vim.inc index e34cc17fe5..402e39acff 100644 --- a/meta/recipes-support/vim/vim.inc +++ b/meta/recipes-support/vim/vim.inc @@ -23,6 +23,7 @@ SRC_URI = "git://github.com/vim/vim.git;branch=master;protocol=https;tag=v${PV} file://CVE-2026-52858.patch \ file://CVE-2026-52859.patch \ file://CVE-2026-52860.patch \ + file://CVE-2026-57455.patch \ " PV .= ".0340" -- 2.43.0
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