Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: sd: Fix potential NULL pointer dereference If sd_probe() sees an early error before sdkp->device is initialized, sd_zbc_release_disk() is called. This causes a NULL pointer dereference when sd_is_zoned() is called inside that function. Avoid this by removing the call to sd_zbc_release_disk() in sd_probe() error path. This change is safe and does not result in zone information memory leakage because the zone information for a zoned disk is allocated only when sd_revalidate_disk() is called, at which point sdkp->disk_dev is fully set, resulting in sd_disk_release() being called when needed to cleanup a disk zone information using sd_zbc_release_disk().
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.10, < 5.10.122 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/05fbde3a77a4f1d62e4c4428f384288c1f1a0be5Patch
- https://git.kernel.org/stable/c/0fcb0b131cc90c8f523a293d84c58d0c7273c96fPatch
- https://git.kernel.org/stable/c/3733439593ad12f7b54ae35c273ea6f15d692de3Patch
- https://git.kernel.org/stable/c/78f8e96df06e2d04d82d4071c299b59d28744f47Patch
- https://git.kernel.org/stable/c/c1f0187025905e9981000d44a92e159468b561a8Patch
FAQ
What is CVE-2022-49376?
CVE-2022-49376 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: scsi: sd: Fix potential NULL pointer dereference If sd_probe() sees an early error before sdkp->device is initialized, sd_zbc_rele...
How severe is CVE-2022-49376?
CVE-2022-49376 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49376?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.