NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-selftests-internal (opens in a new tab)
Threat Intelligence
Exploit maturity not defined.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RHEL8-KERNELSELFTESTSINTERNAL-6978651
- published22 May 2024
- disclosed21 May 2024
Introduced: 21 May 2024
CVE-2021-47385 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-selftests-internal package and not the kernel-selftests-internal package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field
If driver read val value sufficient for (val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7)) from device then Null pointer dereference occurs. (It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers) Also lm75[] does not serve a purpose anymore after switching to devm_i2c_new_dummy_device() in w83791d_detect_subclients().
The patch fixes possible NULL pointer dereference by removing lm75[].
Found by Linux Driver Verification project (linuxtesting.org).
[groeck: Dropped unnecessary continuation lines, fixed multipline alignment]
References
- https://access.redhat.com/security/cve/CVE-2021-47385
- https://git.kernel.org/stable/c/0f36b88173f028e372668ae040ab1a496834d278
- https://git.kernel.org/stable/c/1499bb2c3a87a2efea0065adab2bd66badee61c3
- https://git.kernel.org/stable/c/200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1
- https://git.kernel.org/stable/c/24af1fe376e22c42238a4a604d31e46c486876c3