b08edd98b2
- glibc-CVE-2024-33599-nscd-Stack-based-buffer-overflow-in-n.patch: nscd: Stack-based buffer overflow in netgroup cache (CVE-2024-33599, bsc#1223423, BZ #31677) - glibc-CVE-2024-33600-nscd-Avoid-null-pointer-crashes-after.patch: nscd: Avoid null pointer crashes after notfound response (CVE-2024-33600, bsc#1223424, BZ #31678) - glibc-CVE-2024-33600-nscd-Do-not-send-missing-not-found-re.patch: nscd: Do not send missing not-found response in addgetnetgrentX (CVE-2024-33600, bsc#1223424, BZ #31678) - glibc-CVE-2024-33601-CVE-2024-33602-nscd-netgroup-Use-two.patch: netgroup: Use two buffers in addgetnetgrentX (CVE-2024-33601, CVE-2024-33602, bsc#1223425, BZ #31680) - nscd-netgroup-cache-timeout.patch: Use time_t for return type of addgetnetgrentX (CVE-2024-33602, bsc#1223425) - utmp-time-bits.patch: login: structs utmp, utmpx, lastlog _TIME_BITS independence (BZ #30701) - elf-parse-tunables.patch: elf: Only process multiple tunable once (BZ #31686) OBS-URL: https://build.opensuse.org/request/show/1173931 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=707
39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
From 1263d583d2e28afb8be53f8d6922f0842036f35d Mon Sep 17 00:00:00 2001
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From: Florian Weimer <fweimer@redhat.com>
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Date: Thu, 25 Apr 2024 15:00:45 +0200
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Subject: [PATCH] CVE-2024-33599: nscd: Stack-based buffer overflow in netgroup
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cache (bug 31677)
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Using alloca matches what other caches do. The request length is
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bounded by MAXKEYLEN.
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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(cherry picked from commit 87801a8fd06db1d654eea3e4f7626ff476a9bdaa)
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---
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nscd/netgroupcache.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/nscd/netgroupcache.c b/nscd/netgroupcache.c
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index 0c6e46f15c..f227dc7fa2 100644
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--- a/nscd/netgroupcache.c
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+++ b/nscd/netgroupcache.c
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@@ -502,12 +502,13 @@ addinnetgrX (struct database_dyn *db, int fd, request_header *req,
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= (struct indataset *) mempool_alloc (db,
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sizeof (*dataset) + req->key_len,
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1);
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- struct indataset dataset_mem;
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bool cacheable = true;
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if (__glibc_unlikely (dataset == NULL))
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{
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cacheable = false;
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- dataset = &dataset_mem;
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+ /* The alloca is safe because nscd_run_worker verfies that
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+ key_len is not larger than MAXKEYLEN. */
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+ dataset = alloca (sizeof (*dataset) + req->key_len);
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}
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datahead_init_pos (&dataset->head, sizeof (*dataset) + req->key_len,
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--
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2.45.0
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