Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.14.276 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/a6968f7a367f128d120447360734344d5a3d5336Patch
- https://git.kernel.org/stable/c/a9564d84ed9f6ee71017d062d0d2182154294a4bPatch
- https://git.kernel.org/stable/c/aec36b98a1bbaa84bfd8299a306e4c12314af626Patch
- https://git.kernel.org/stable/c/b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322Patch
- https://git.kernel.org/stable/c/d7c5d79e50be6e06b669141e3db1f977a0dd4e8ePatch
- https://git.kernel.org/stable/c/e3e0e067d5b34e4a68e3cc55f8eebc413f56f8edPatch
- https://git.kernel.org/stable/c/fb7a5115422fbd6a4d505e8844f1ef5529f10489Patch
FAQ
What is CVE-2022-49053?
CVE-2022-49053 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount p...
How severe is CVE-2022-49053?
CVE-2022-49053 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49053?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.