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Vulnerability · Published May 22, 2024 · Assigned by Linux

CVE-2021-47478isofs: Fix out of bound access for corrupted isofs image

Critical 9.1

In plain English

A critical-severity out-of-bounds read in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.7%top 47.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.15.3-1DEBIAN-CVE-2021-47478
Debian:13linux5.15.3-1DEBIAN-CVE-2021-47478
Debian:14linux5.15.3-1DEBIAN-CVE-2021-47478
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47478
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47478
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47478

Affected products (as reported)

VendorProductVersions
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 156ce5bb6cc43a80a743810199defb1dc3f55b7f1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 9ec33a9b8790c212cc926a88c5e2105f97f3f57e1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before afbd40f425227e661d991757e11cc4db024e761f1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before b0ddff8d68f2e43857a84dce54c3deab181c8ae11da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 6e80e9314f8bb52d9eabe1907698718ff01120f51da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 86d4aedcbc69c0f84551fb70f953c24e396de2d71da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before b2fa1f52d22c5455217b294629346ad23a7449451da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before e7fb722586a2936b37bdff096c095c30ca06404d
Linux Linux 2.6.12

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References