Lukas Wunner f2133b849f crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() ... commit b16510a530 upstream. Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa implementation's ->key_size() callback returns an unusually large value. Herbert instead suggests (for a division by 8): X / 8 + !!(X & 7) Based on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and use it in lieu of DIV_ROUND_UP() for ->key_size() return values. Additionally, use the macro in ecc_digits_from_bytes(), whose "nbytes" parameter is a ->key_size() return value in some instances, or a user-specified ASN.1 length in the case of ecdsa_get_signature_rs(). Link: https://lore.kernel.org/r/Z3iElsILmoSu6FuC@gondor.apana.org.au/ Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-07-17 18:37:24 +02:00
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acpi	ACPICA: Avoid sequence overread in call to strncmp()	2025-06-27 11:11:26 +01:00
asm-generic	mm: hugetlb: Add huge page size param to huge_ptep_get_and_clear()	2025-03-13 13:02:17 +01:00
clocksource
crypto	crypto: ahash - Set default reqsize from ahash_alg	2025-05-29 11:02:40 +02:00
cxl
drm	drm/framebuffer: Acquire internal references on GEM handles	2025-07-17 18:37:12 +02:00
dt-bindings
keys
kunit	kunit: platform: Resolve 'struct completion' warning	2025-02-21 14:01:25 +01:00
kvm
linux	crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP()	2025-07-17 18:37:24 +02:00
math-emu
media	media: v4l: Memset argument to 0 before calling get_mbus_config pad op	2025-05-29 11:02:49 +02:00
memory
misc
net	netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()	2025-07-17 18:37:18 +02:00
pcmcia
ras
rdma	RDMA/uverbs: Propagate errors from rdma_lookup_get_uobject()	2025-05-29 11:02:19 +02:00
rv	rv: Reset per-task monitors also for idle tasks	2025-02-17 10:05:30 +01:00
scsi
soc	soc: qcom: ice: introduce devm_of_qcom_ice_get	2025-05-02 07:58:52 +02:00
sound	ASoC: soc-acpi: add get_function_tplg_files ops	2025-07-17 18:37:02 +02:00
target
trace	erofs: refine readahead tracepoint	2025-07-17 18:37:18 +02:00
uapi	vsock/uapi: fix linux/vm_sockets.h userspace compilation errors	2025-07-06 11:01:40 +02:00
ufs	scsi: ufs: Introduce quirk to extend PA_HIBERN8TIME for UFS devices	2025-05-29 11:01:58 +02:00
vdso
video
xen	xen/mcelog: Add __nonstring annotations for unterminated strings	2025-04-20 10:15:12 +02:00