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Qualcomm driver fixes for v6.17-rc1

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The recently extended sanity checks for the Qualcomm firmware files
 turned out to be too restrictive, preventing a variety of firmware
 images from being loaded. Adjust the checks to allow section header
 sizes of 0 when sections aren't used.
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Merge tag 'qcom-drivers-fixes-for-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes

Qualcomm driver fixes for v6.17-rc1

The recently extended sanity checks for the Qualcomm firmware files
turned out to be too restrictive, preventing a variety of firmware
images from being loaded. Adjust the checks to allow section header
sizes of 0 when sections aren't used.

* tag 'qcom-drivers-fixes-for-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  soc: qcom: mdt_loader: Deal with zero e_shentsize

Link: https://lore.kernel.org/r/20250811145613.120917-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2025-09-01 10:08:39 +02:00
commit e6e709901c
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/soc/qcom/mdt_loader.c
View File

@ -39,12 +39,14 @@ static bool mdt_header_valid(const struct firmware *fw)
if (phend > fw->size)
return false;
if (ehdr->e_shentsize != sizeof(struct elf32_shdr))
return false;
if (ehdr->e_shentsize || ehdr->e_shnum) {
if (ehdr->e_shentsize != sizeof(struct elf32_shdr))
return false;
shend = size_add(size_mul(sizeof(struct elf32_shdr), ehdr->e_shnum), ehdr->e_shoff);
if (shend > fw->size)
return false;
shend = size_add(size_mul(sizeof(struct elf32_shdr), ehdr->e_shnum), ehdr->e_shoff);
if (shend > fw->size)
return false;
}
return true;
}