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Jan Kara c8cc05de8e fat: fix uninitialized field in nostale filehandles
[ Upstream commit fde2497d2b ]

When fat_encode_fh_nostale() encodes file handle without a parent it
stores only first 10 bytes of the file handle. However the length of the
file handle must be a multiple of 4 so the file handle is actually 12
bytes long and the last two bytes remain uninitialized. This is not
great at we potentially leak uninitialized information with the handle
to userspace. Properly initialize the full handle length.

Link: https://lkml.kernel.org/r/20240205122626.13701-1-jack@suse.cz
Reported-by: syzbot+3ce5dea5b1539ff36769@syzkaller.appspotmail.com
Fixes: ea3983ace6 ("fat: restructure export_operations")
Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-03 15:19:27 +02:00
arch sparc: vDSO: fix return value of __setup handler 2024-04-03 15:19:26 +02:00
block block: Clear zone limits for a non-zoned stacked queue 2024-04-03 15:19:27 +02:00
certs
crypto crypto: jitter - fix CRYPTO_JITTERENTROPY help text 2024-03-26 18:20:50 -04:00
Documentation media: mc: Expand MUST_CONNECT flag to always require an enabled link 2024-04-03 15:19:25 +02:00
drivers crypto: qat - resolve race condition during AER recovery 2024-04-03 15:19:26 +02:00
fs fat: fix uninitialized field in nostale filehandles 2024-04-03 15:19:27 +02:00
include media: mc: Add num_links flag to media_pad 2024-04-03 15:19:25 +02:00
init modules: wait do_free_init correctly 2024-03-26 18:20:52 -04:00
io_uring io_uring/net: correct the type of variable 2024-03-26 18:20:57 -04:00
ipc
kernel bounds: support non-power-of-two CONFIG_NR_CPUS 2024-04-03 15:19:27 +02:00
lib pci_iounmap(): Fix MMIO mapping leak 2024-04-03 15:19:25 +02:00
LICENSES
mm kasan/test: avoid gcc warning for intentional overflow 2024-04-03 15:19:27 +02:00
net net: report RCU QS on threaded NAPI repolling 2024-03-26 18:21:02 -04:00
rust
samples work around gcc bugs with 'asm goto' with outputs 2024-02-23 09:12:28 +01:00
scripts kconfig: fix infinite loop when expanding a macro at the end of file 2024-03-26 18:20:58 -04:00
security smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity() 2024-04-03 15:19:24 +02:00
sound ASoC: rockchip: i2s-tdm: Fix inaccurate sampling rates 2024-03-26 18:20:58 -04:00
tools selftests/mqueue: Set timeout to 180 seconds 2024-04-03 15:19:26 +02:00
usr
virt KVM: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-03 15:19:25 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS trace: Relocate event helper files 2024-03-06 14:45:17 +00:00
Makefile Linux 6.1.83 2024-03-26 18:22:57 -04:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
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Please read the Documentation/process/changes.rst file, as it contains the
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the problems which may result by upgrading your kernel.