CVE-2022-50313
CVE-2022-50313 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2022-55542
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: erofs: fix order >= MAX_ORDER warning due to crafted negative i_size As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly. Let's fall back to the generic path to deal with such unusual i_size. [1] https://lore.kernel.org/r/[email protected]
Frequently asked questions
- What is CVE-2022-50313?
- In the Linux kernel, the following vulnerability has been resolved: erofs: fix order >= MAX_ORDER warning due to crafted negative i_size As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly. Let's fall back to the generic path to deal with such unusual i_size. [1] https://lore.kernel.org/r/[email protected]
- How severe is CVE-2022-50313?
- CVE-2022-50313 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2022-50313 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-50313?
- CVE-2022-50313 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-50313?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2022-50313 have an EU (EUVD) identifier?
- Yes. CVE-2022-50313 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-55542.
- When was CVE-2022-50313 published?
- CVE-2022-50313 was published on 2025-09-15 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/0ab621fcdff1a58ff4de51a8590fa92a0ecd34be
- https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f
- https://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873
- https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708cc
- https://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997
- https://git.kernel.org/stable/c/b6c8330f5b0f22149957a2e4977fd0f01a9db7cd
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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