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Vulnerability · Published Jun 25, 2024 · Assigned by Linux

CVE-2024-38385genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()

High 7.8

In plain English

A high-severity security flaw 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 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 88.2% 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: genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after() irq_find_at_or_after() dereferences the interrupt descriptor which is returned by mt_find() while neither holding sparse_irq_lock nor RCU read lock, which means the descriptor can be freed between mt_find() and the dereference: CPU0 CPU1 desc = mt_find() delayed_free_desc(desc) irq_desc_get_irq(desc) The use-after-free is reported by KASAN: Call trace: irq_get_next_irq+0x58/0x84 show_stat+0x638/0x824 seq_read_iter+0x158/0x4ec proc_reg_read_iter+0x94/0x12c vfs_read+0x1e0/0x2c8 Freed by task 4471: slab_free_freelist_hook+0x174/0x1e0 __kmem_cache_free+0xa4/0x1dc kfree+0x64/0x128 irq_kobj_release+0x28/0x3c kobject_put+0xcc/0x1e0 delayed_free_desc+0x14/0x2c rcu_do_batch+0x214/0x720 Guard the access with a RCU read lock section.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.9.7-1DEBIAN-CVE-2024-38385
Debian:14linux6.9.7-1DEBIAN-CVE-2024-38385
Ubuntu:24.04:LTSlinux6.8.0-44.44USN-6999-1
Ubuntu:24.04:LTSlinux6.8.0-44.44UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-aws6.8.0-1015.16USN-6999-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1015.16UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1015.16~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-azure6.8.0-1014.16UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-azure6.8.0-1014.16USN-7004-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1014.16~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-gcp6.8.0-1014.16USN-6999-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1014.16UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1014.16~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-gke6.8.0-1010.13USN-6999-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1010.13UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-45.45~22.04.1USN-7029-1
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-45.45~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-ibm6.8.0-1012.12USN-6999-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1012.12UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-44.44.1USN-6999-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-44.44.1UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-44.44.1~22.04.1USN-7008-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-44.44.1~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1013.14USN-7005-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1013.14UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1013.14~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1013.14~22.04.1USN-7005-2
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1013.14.1UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1013.14.1USN-7005-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1012.12USN-6999-1
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1012.12UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-oracle6.8.0-1012.12UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-oracle6.8.0-1012.12USN-6999-1
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1012.12~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-raspi6.8.0-1011.12USN-6999-2
Ubuntu:24.04:LTSlinux-raspi6.8.0-1011.12UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-38385
Ubuntu:24.04:LTSlinux-riscv6.8.0-44.44.1UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-44.44.1~22.04.1UBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-38385
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-38385

Affected products (as reported)

VendorProductVersions
Linux Linux 721255b9826bd11c7a38b585905fc2dd0fb94e52 – before 1c7891812d85500ae2ca4051fa5683fcf29930d8721255b9826bd11c7a38b585905fc2dd0fb94e52 – before d084aa022f84319f8079e30882cbcbc026af9f21721255b9826bd11c7a38b585905fc2dd0fb94e52 – before b84a8aba806261d2f759ccedf4a2a6a80a5e55ba
Linux Linux 6.5

References