* [PATCH AUTOSEL 4.14 2/3] efi: sysfb_efi: Add quirk for Lenovo Yoga Book X91F/L
2023-04-01 1:44 [PATCH AUTOSEL 4.14 1/3] i2c: imx-lpi2c: clean rx/tx buffers upon new message Sasha Levin
@ 2023-04-01 1:44 ` Sasha Levin
2023-04-01 1:44 ` [PATCH AUTOSEL 4.14 3/3] verify_pefile: relax wrapper length check Sasha Levin
1 sibling, 0 replies; 3+ messages in thread
From: Sasha Levin @ 2023-04-01 1:44 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Hans de Goede, Javier Martinez Canillas, Ard Biesheuvel,
Sasha Levin, tglx, mingo, bp, dave.hansen, x86
From: Hans de Goede <hdegoede@redhat.com>
[ Upstream commit 5ed213dd64681f84a01ceaa82fb336cf7d59ddcf ]
Another Lenovo convertable which reports a landscape resolution of
1920x1200 with a pitch of (1920 * 4) bytes, while the actual framebuffer
has a resolution of 1200x1920 with a pitch of (1200 * 4) bytes.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/x86/kernel/sysfb_efi.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/x86/kernel/sysfb_efi.c b/arch/x86/kernel/sysfb_efi.c
index dd8d7636c5420..5bc0fedb33420 100644
--- a/arch/x86/kernel/sysfb_efi.c
+++ b/arch/x86/kernel/sysfb_efi.c
@@ -273,6 +273,14 @@ static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
"IdeaPad Duet 3 10IGL5"),
},
},
+ {
+ /* Lenovo Yoga Book X91F / X91L */
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ /* Non exact match to match F + L versions */
+ DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
+ },
+ },
{},
};
--
2.39.2
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH AUTOSEL 4.14 3/3] verify_pefile: relax wrapper length check
2023-04-01 1:44 [PATCH AUTOSEL 4.14 1/3] i2c: imx-lpi2c: clean rx/tx buffers upon new message Sasha Levin
2023-04-01 1:44 ` [PATCH AUTOSEL 4.14 2/3] efi: sysfb_efi: Add quirk for Lenovo Yoga Book X91F/L Sasha Levin
@ 2023-04-01 1:44 ` Sasha Levin
1 sibling, 0 replies; 3+ messages in thread
From: Sasha Levin @ 2023-04-01 1:44 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Robbie Harwood, David Howells, Jarkko Sakkinen, Eric Biederman,
Herbert Xu, keyrings, linux-crypto, kexec, Sasha Levin, davem
From: Robbie Harwood <rharwood@redhat.com>
[ Upstream commit 4fc5c74dde69a7eda172514aaeb5a7df3600adb3 ]
The PE Format Specification (section "The Attribute Certificate Table
(Image Only)") states that `dwLength` is to be rounded up to 8-byte
alignment when used for traversal. Therefore, the field is not required
to be an 8-byte multiple in the first place.
Accordingly, pesign has not performed this alignment since version
0.110. This causes kexec failure on pesign'd binaries with "PEFILE:
Signature wrapper len wrong". Update the comment and relax the check.
Signed-off-by: Robbie Harwood <rharwood@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jarkko Sakkinen <jarkko@kernel.org>
cc: Eric Biederman <ebiederm@xmission.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: keyrings@vger.kernel.org
cc: linux-crypto@vger.kernel.org
cc: kexec@lists.infradead.org
Link: https://learn.microsoft.com/en-us/windows/win32/debug/pe-format#the-attribute-certificate-table-image-only
Link: https://github.com/rhboot/pesign
Link: https://lore.kernel.org/r/20230220171254.592347-2-rharwood@redhat.com/ # v2
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
crypto/asymmetric_keys/verify_pefile.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/crypto/asymmetric_keys/verify_pefile.c b/crypto/asymmetric_keys/verify_pefile.c
index d178650fd524c..411977947adbe 100644
--- a/crypto/asymmetric_keys/verify_pefile.c
+++ b/crypto/asymmetric_keys/verify_pefile.c
@@ -139,11 +139,15 @@ static int pefile_strip_sig_wrapper(const void *pebuf,
pr_debug("sig wrapper = { %x, %x, %x }\n",
wrapper.length, wrapper.revision, wrapper.cert_type);
- /* Both pesign and sbsign round up the length of certificate table
- * (in optional header data directories) to 8 byte alignment.
+ /* sbsign rounds up the length of certificate table (in optional
+ * header data directories) to 8 byte alignment. However, the PE
+ * specification states that while entries are 8-byte aligned, this is
+ * not included in their length, and as a result, pesign has not
+ * rounded up since 0.110.
*/
- if (round_up(wrapper.length, 8) != ctx->sig_len) {
- pr_debug("Signature wrapper len wrong\n");
+ if (wrapper.length > ctx->sig_len) {
+ pr_debug("Signature wrapper bigger than sig len (%x > %x)\n",
+ ctx->sig_len, wrapper.length);
return -ELIBBAD;
}
if (wrapper.revision != WIN_CERT_REVISION_2_0) {
--
2.39.2
^ permalink raw reply related [flat|nested] 3+ messages in thread