by Kastro
Paper/Archive/CVE-2021-47478

CVE-2021-47478

Linux Linux — isofs: Fix out of bound access for corrupted isofs image

EPSS 0.7%CVSS 9.1
critical.is priorityof 100
38
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 52.7.527 × 2010.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 156ce5bb6cc43a80a743810199defb1dc3f55b7f156ce5bb6cc43a80a743810199defb1dc3f55b7fCNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 9ec33a9b8790c212cc926a88c5e2105f97f3f57e9ec33a9b8790c212cc926a88c5e2105f97f3f57eCNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < afbd40f425227e661d991757e11cc4db024e761fafbd40f425227e661d991757e11cc4db024e761fCNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < b0ddff8d68f2e43857a84dce54c3deab181c8ae1b0ddff8d68f2e43857a84dce54c3deab181c8ae1CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 6e80e9314f8bb52d9eabe1907698718ff01120f56e80e9314f8bb52d9eabe1907698718ff01120f5CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 86d4aedcbc69c0f84551fb70f953c24e396de2d786d4aedcbc69c0f84551fb70f953c24e396de2d7CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < b2fa1f52d22c5455217b294629346ad23a744945b2fa1f52d22c5455217b294629346ad23a744945CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < e7fb722586a2936b37bdff096c095c30ca06404de7fb722586a2936b37bdff096c095c30ca06404dCNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < e96a1866b40570b5950cda8602c2819189c62a48e96a1866b40570b5950cda8602c2819189c62a48CNA
Linux2.6.12–CNA

Scores by source

Linux (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADP5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgit.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7frefgit.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57erefgit.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761frefgit.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1refgit.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5refgit.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7refgit.kernel.org/stable/c/b2fa1f52d22c5455217b294629346ad23a744945refgit.kernel.org/stable/c/e7fb722586a2936b37bdff096c095c30ca06404drefgit.kernel.org/stable/c/e96a1866b40570b5950cda8602c2819189c62a48