CVE-2024-27075 media: dvb-frontends: avoid stack overflow warnings with clang

2024-05-0113:04:44

Linux

github.com

linux kernel

vulnerability resolved

media

dvb-frontends

stack overflow

clang

kasan issue

stv0367

i2c_msg

AI Score

7.1

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

In the Linux kernel, the following vulnerability has been resolved:

media: dvb-frontends: avoid stack overflow warnings with clang

A previous patch worked around a KASAN issue in stv0367, now a similar
problem showed up with clang:

drivers/media/dvb-frontends/stv0367.c:1222:12: error: stack frame size (3624) exceeds limit (2048) in ‘stv0367ter_set_frontend’ [-Werror,-Wframe-larger-than]
1214 | static int stv0367ter_set_frontend(struct dvb_frontend *fe)

Rework the stv0367_writereg() function to be simpler and mark both
register access functions as noinline_for_stack so the temporary
i2c_msg structures do not get duplicated on the stack when KASAN_STACK
is enabled.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "c073c8cede5a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "fa8b472952ef",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "fb07104a02e8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "d20b64f156de",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "107052a8cfef",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "8fad9c5bb00d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "d6b4895197ab",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "ed514ecf4f29",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3cd890dbe2a4",
        "lessThan": "7a4cf27d1f05",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/media/dvb-frontends/stv0367.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.16"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.16",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.19.311",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.273",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.214",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.153",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.83",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.23",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.7.11",
        "versionType": "custom",
        "lessThanOrEqual": "6.7.*"
      },
      {
        "status": "unaffected",
        "version": "6.8.2",
        "versionType": "custom",
        "lessThanOrEqual": "6.8.*"
      },
      {
        "status": "unaffected",
        "version": "6.9",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/media/dvb-frontends/stv0367.c"
    ],
    "defaultStatus": "affected"
  }
]