14e056a722
here is the three patches: fa4ad10406 (HEAD -> 238, origin/release/2.38/master) elf: Change ldconfig auxcache ma gic number (bug 32231) 4dd8641461 Add crt1-2.0.o for glibc 2.0 compatibility tests 370be85892 libio: Attempt wide backup free only for non-legacy code (cherry picked from commit 3770ccfa345bceb7ebdaafbc48177f1e615d1546)
55 lines
2.0 KiB
Diff
55 lines
2.0 KiB
Diff
From 370be858928c2c537c112859ccd54cd1b0d56715 Mon Sep 17 00:00:00 2001
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From: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Date: Tue, 3 Sep 2024 14:58:33 -0400
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Subject: [PATCH] libio: Attempt wide backup free only for non-legacy code
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_wide_data and _mode are not available in legacy code, so do not attempt
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to free the wide backup buffer in legacy code.
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Resolves: BZ #32137 and BZ #27821
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Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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(cherry picked from commit ae4d44b1d501421ad9a3af95279b8f4d1546f1ce)
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---
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NEWS | 2 ++
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libio/genops.c | 2 +-
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2 files changed, 3 insertions(+), 1 deletion(-)
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diff --git a/NEWS b/NEWS
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index 7a9a4b7ea3..a2adce11ff 100644
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--- a/NEWS
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+++ b/NEWS
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@@ -36,6 +36,7 @@ Security related changes:
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The following bugs are resolved with this release:
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+ [27821] ungetc: Fix backup buffer leak on program exit
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[29039] Corrupt DTV after reuse of a TLS module ID following dlclose with unused TLS
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[30081] resolv: Do not wait for non-existing second DNS response after error
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[30694] The iconv program no longer tells the user which given encoding name was wrong
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@@ -57,6 +58,7 @@ The following bugs are resolved with this release:
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[31965] rseq extension mechanism does not work as intended
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[31968] mremap implementation in C does not handle arguments correctly
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[32052] Name space violation in fortify wrappers
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+ [32137] libio: Attempt wide backup free only for non-legacy code
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Version 2.38
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diff --git a/libio/genops.c b/libio/genops.c
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index fb06245467..7b30aab095 100644
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--- a/libio/genops.c
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+++ b/libio/genops.c
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@@ -792,7 +792,7 @@ _IO_unbuffer_all (void)
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/* Free up the backup area if it was ever allocated. */
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if (_IO_have_backup (fp))
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_IO_free_backup_area (fp);
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- if (fp->_mode > 0 && _IO_have_wbackup (fp))
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+ if (!legacy && fp->_mode > 0 && _IO_have_wbackup (fp))
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_IO_free_wbackup_area (fp);
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if (! (fp->_flags & _IO_UNBUFFERED)
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--
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2.27.0
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