diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2021-3409-4.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2021-3409-4.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3409-4.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3409-4.patch new file mode 100644 index 0000000000..2e49e3bc18 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3409-4.patch @@ -0,0 +1,52 @@ +Backport of: + +From 5cd7aa3451b76bb19c0f6adc2b931f091e5d7fcd Mon Sep 17 00:00:00 2001 +From: Bin Meng <bmeng.cn@gmail.com> +Date: Wed, 3 Mar 2021 20:26:38 +0800 +Subject: [PATCH] hw/sd: sdhci: Limit block size only when SDHC_BLKSIZE + register is writable +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf8 +Content-Transfer-Encoding: 8bit + +The codes to limit the maximum block size is only necessary when +SDHC_BLKSIZE register is writable. + +Tested-by: Alexander Bulekov <alxndr@bu.edu> +Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> +Signed-off-by: Bin Meng <bmeng.cn@gmail.com> +Message-Id: <20210303122639.20004-5-bmeng.cn@gmail.com> +Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> + +CVE: CVE-2021-3409 CVE-2020-17380 +Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/qemu/tree/debian/patches/CVE-2021-3409-4.patch?h=ubuntu/focal-security Upstream commit https://github.com/qemu/qemu/commit/5cd7aa3451b76bb19c0f6adc2b931f091e5d7fcd ] +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + hw/sd/sdhci.c | 14 +++++++------- + 1 file changed, 7 insertions(+), 7 deletions(-) + +--- a/hw/sd/sdhci.c ++++ b/hw/sd/sdhci.c +@@ -1137,15 +1137,15 @@ sdhci_write(void *opaque, hwaddr offset, + if (!TRANSFERRING_DATA(s->prnsts)) { + MASKED_WRITE(s->blksize, mask, extract32(value, 0, 12)); + MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16); +- } + +- /* Limit block size to the maximum buffer size */ +- if (extract32(s->blksize, 0, 12) > s->buf_maxsz) { +- qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than " \ +- "the maximum buffer 0x%x", __func__, s->blksize, +- s->buf_maxsz); ++ /* Limit block size to the maximum buffer size */ ++ if (extract32(s->blksize, 0, 12) > s->buf_maxsz) { ++ qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than " ++ "the maximum buffer 0x%x\n", __func__, s->blksize, ++ s->buf_maxsz); + +- s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz); ++ s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz); ++ } + } + + break; |