CVE-2021-47478
Linux Kernel out-of-bounds read
- Published22 May 2024
Description
In the Linux kernel, the following vulnerability has been resolved: isofs: Fix out of bound access for corrupted isofs image When isofs image is suitably corrupted isofs_read_inode() can read data beyond the end of buffer. Sanity-check the directory entry length before using it.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HAffected products
Remediation
- https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f
- https://git.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5
- https://git.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7
- https://git.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57e
- https://git.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761f
- https://git.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1
References
- https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f
- https://git.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5
- https://git.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7
- https://git.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57e
- https://git.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761f
- https://git.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1
- https://git.kernel.org/stable/c/b2fa1f52d22c5455217b294629346ad23a744945
- https://git.kernel.org/stable/c/e7fb722586a2936b37bdff096c095c30ca06404d
- https://git.kernel.org/stable/c/e96a1866b40570b5950cda8602c2819189c62a48
Related CVEs
Recent high-severity vulnerabilities sharing a weakness type.
Frequently asked
Is CVE-2021-47478 being actively exploited?
CVE-2021-47478 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.69%.
How severe is CVE-2021-47478?
CVE-2021-47478 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.69% probability of exploitation.
Which products are affected by CVE-2021-47478?
Affected products include Linux Kernel.
How do I fix CVE-2021-47478?
Upgrade affected software to a fixed version, for example Linux Kernel 4.14.255 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2021-47478 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.