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Christian Marangi 087de000e4 PM / devfreq: Fix buffer overflow in trans_stat_show 
commit 08e23d05fa upstream.

Fix buffer overflow in trans_stat_show().

Convert simple snprintf to the more secure scnprintf with size of
PAGE_SIZE.

Add condition checking if we are exceeding PAGE_SIZE and exit early from
loop. Also add at the end a warning that we exceeded PAGE_SIZE and that
stats is disabled.

Return -EFBIG in the case where we don't have enough space to write the
full transition table.

Also document in the ABI that this function can return -EFBIG error.

Link: https://lore.kernel.org/all/20231024183016.14648-2-ansuelsmth@gmail.com/
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218041
Fixes: e552bbaf5b ("PM / devfreq: Add sysfs node for representing frequency transition information.")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-05-02 16:23:44 +02:00
..
ABI PM / devfreq: Fix buffer overflow in trans_stat_show 2024-05-02 16:23:44 +02:00
PCI Documentation: better locations for sysfs-pci, sysfs-tagging 2020-10-09 09:33:23 -06:00
RCU Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu 2020-10-09 08:21:56 +02:00
accounting psi: Fix uaf issue when psi trigger is destroyed while being polled 2022-02-05 12:37:55 +01:00
admin-guide x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled 2024-04-13 12:59:13 +02:00
arm ARM: 9012/1: move device tree mapping out of linear region 2021-05-19 10:13:18 +02:00
arm64 perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:01:05 +02:00
block block: introduce zone_write_granularity limit 2024-04-13 12:58:07 +02:00
bpf bpf: Migrate from patchwork.ozlabs.org to patchwork.kernel.org. 2020-10-11 22:05:47 +02:00
cdrom
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core-api kernel.h: split out kstrtox() and simple_strtox() to a separate header 2023-06-21 15:45:35 +02:00
cpu-freq
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crypto crypto: af_alg - add extra parameters for DRBG interface 2020-09-25 17:48:52 +10:00
dev-tools docs/scripts/gdb: add necessary make scripts_gdb step 2023-03-11 16:39:52 +01:00
devicetree dt-bindings: nvmem: mxs-ocotp: Document fsl,ocotp 2024-01-05 15:12:28 +01:00
doc-guide docs: kerneldoc.py: add support for kerneldoc -nosymbol 2020-10-15 07:49:38 +02:00
driver-api spi: Update reference to struct spi_controller 2023-01-14 10:15:26 +01:00
fault-injection debugfs: fix error when writing negative value to atomic_t debugfs file 2023-01-14 10:15:19 +01:00
fb drm fixes (round two) for 5.10-rc1 2020-10-23 13:56:34 -07:00
features s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
filesystems rename(): fix the locking of subdirectories 2024-02-23 08:41:54 +01:00
firmware-guide Documentation: ACPI: EINJ: Fix obsolete example 2022-08-25 11:37:53 +02:00
firmware_class
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fpga
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gpu Revert "fbcon: Disable accelerated scrolling" 2022-02-08 18:30:40 +01:00
hid
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hwmon hwmon: (lm90) Add basic support for TI TMP461 2021-12-29 12:25:59 +01:00
i2c Documentation: i2c: add testunit docs to index 2020-10-05 22:57:45 +02:00
ia64
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ide
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iio
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infiniband
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input Input: iforce - add support for Boeder Force Feedback Wheel 2022-09-20 12:38:32 +02:00
isdn
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kbuild Documentation/Kbuild: Remove references to gcc-plugin.sh 2021-12-14 11:32:46 +01:00
kernel-hacking docs: futex: Fix kernel-doc references after code split-up preparation 2023-04-26 11:27:40 +02:00
leds docs: leds: index.rst: add a missing file 2020-11-02 13:45:37 +01:00
litmus-tests
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livepatch
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locking Documentation/locking/locktypes: Update migrate_disable() bits. 2021-12-14 11:32:42 +01:00
m68k
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maintainer
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mhi
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mips dt: Remove booting-without-of.rst 2020-10-13 13:33:16 -05:00
misc-devices Documentation: remove mic/index from misc-devices/index.rst 2020-11-04 11:38:32 +01:00
netlabel
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networking net: change accept_ra_min_rtr_lft to affect all RA lifetimes 2023-10-25 11:54:14 +02:00
nios2
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nvdimm
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openrisc
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parisc
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pcmcia
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power PCI/PM: Rename pci_dev.d3_delay to d3hot_delay 2020-09-29 14:21:50 -05:00
powerpc powerpc/doc: Fix htmldocs errors 2023-04-26 11:27:37 +02:00
process overflow: Implement size_t saturating arithmetic helpers 2023-11-20 11:06:44 +01:00
riscv
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s390
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scheduler
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scsi scsi: core: Fix the scsi_set_resid() documentation 2023-09-19 12:20:21 +02:00
security watch_queue: Drop references to /dev/watch_queue 2021-03-04 11:37:59 +01:00
sh dt: Remove booting-without-of.rst 2020-10-13 13:33:16 -05:00
sound ASoC: doc: Fix undefined SND_SOC_DAPM_NOPM argument 2024-02-23 08:42:10 +01:00
sparc
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sphinx docs: Fix the docs build with Sphinx 6.0 2023-01-18 11:44:53 +01:00
sphinx-static
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spi
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staging
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target tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
timers
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trace attr: use consistent sgid stripping checks 2023-03-22 13:30:08 +01:00
translations docs: futex: Fix kernel-doc references after code split-up preparation 2023-04-26 11:27:40 +02:00
usb
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userspace-api Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
virt KVM: s390: disable migration mode when dirty tracking is disabled 2023-03-11 16:39:58 +01:00
vm arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL 2022-05-15 20:00:09 +02:00
w1 docs: w1: w1_therm: Fix broken xref, mistakes, clarify text 2020-10-08 09:47:15 +02:00
watchdog
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x86 x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key 2024-04-13 12:58:57 +02:00
xtensa xtensa: fix TLBTEMP area placement 2020-11-16 02:13:15 -08:00
.gitignore
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COPYING-logo
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Changes
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CodingStyle
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Kconfig docs: Kconfig/Makefile: add a check for broken ABI files 2020-10-30 13:08:07 +01:00
Makefile A small number of fixes, plus a build tweak to respect the desire for 2020-11-03 09:57:30 -08:00
SubmittingPatches
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asm-annotations.rst x86/entry: Emit a symbol for register restoring thunk 2021-02-03 23:28:40 +01:00
atomic_bitops.txt locking/atomic: Make test_and_*_bit() ordered on failure 2022-08-25 11:38:10 +02:00
atomic_t.txt
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conf.py docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0 2022-06-09 10:21:28 +02:00
docutils.conf
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dontdiff kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
index.rst
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logo.gif
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memory-barriers.txt
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watch_queue.rst
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