CVE-2021-47478

isofs: Fix out of bound access for corrupted isofs image

State: Published
Severity: 9.1 Critical
Published: May 22, 2024
Updated: Aug 5, 2026
Reserved: May 22, 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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 156ce5bb6cc43a80a743810199defb1dc3f55b7fAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9ec33a9b8790c212cc926a88c5e2105f97f3f57eAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before afbd40f425227e661d991757e11cc4db024e761fAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b0ddff8d68f2e43857a84dce54c3deab181c8ae1Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6e80e9314f8bb52d9eabe1907698718ff01120f5Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 86d4aedcbc69c0f84551fb70f953c24e396de2d7Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b2fa1f52d22c5455217b294629346ad23a744945Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e7fb722586a2936b37bdff096c095c30ca06404dAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e96a1866b40570b5950cda8602c2819189c62a48Affected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 4.4.292 through 4.4.Not affected 4.9.290 through 4.9.Not affected 4.14.255 through 4.14.Not affected 4.19.217 through 4.19.Not affected 5.4.159 through 5.4.Not affected 5.10.79 through 5.10.Not affected 5.14.18 through 5.14.Not affected 5.15.2 through 5.15.Not affected 5.16 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 156ce5bb6cc43a80a743810199defb1dc3f55b7fAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9ec33a9b8790c212cc926a88c5e2105f97f3f57eAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before afbd40f425227e661d991757e11cc4db024e761fAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b0ddff8d68f2e43857a84dce54c3deab181c8ae1Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6e80e9314f8bb52d9eabe1907698718ff01120f5Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 86d4aedcbc69c0f84551fb70f953c24e396de2d7Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b2fa1f52d22c5455217b294629346ad23a744945Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e7fb722586a2936b37bdff096c095c30ca06404dAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e96a1866b40570b5950cda8602c2819189c62a48Affected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
4.4.292 through 4.4.*Not affected
4.9.290 through 4.9.*Not affected
4.14.255 through 4.14.*Not affected
4.19.217 through 4.19.*Not affected
5.4.159 through 5.4.*Not affected
5.10.79 through 5.10.*Not affected
5.14.18 through 5.14.*Not affected
5.15.2 through 5.15.*Not affected
5.16 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.