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Vulnerability · Published Feb 26, 2025 · Assigned by Linux

CVE-2022-49452dpaa2-eth: retrieve the virtual address before dma_unmap

High 7.5

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 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 58.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: dpaa2-eth: retrieve the virtual address before dma_unmap The TSO header was DMA unmapped before the virtual address was retrieved and then used to free the buffer. This meant that we were actually removing the DMA map and then trying to search for it to help in retrieving the virtual address. This lead to a invalid virtual address being used in the kfree call. Fix this by calling dpaa2_iova_to_virt() prior to the dma_unmap call. [ 487.231819] Unable to handle kernel paging request at virtual address fffffd9807000008 (...) [ 487.354061] Hardware name: SolidRun LX2160A Honeycomb (DT) [ 487.359535] pstate: a0400005 (NzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 487.366485] pc : kfree+0xac/0x304 [ 487.369799] lr : kfree+0x204/0x304 [ 487.373191] sp : ffff80000c4eb120 [ 487.376493] x29: ffff80000c4eb120 x28: ffff662240c46400 x27: 0000000000000001 [ 487.383621] x26: 0000000000000001 x25: ffff662246da0cc0 x24: ffff66224af78000 [ 487.390748] x23: ffffad184f4ce008 x22: ffffad1850185000 x21: ffffad1838d13cec [ 487.397874] x20: ffff6601c0000000 x19: fffffd9807000000 x18: 0000000000000000 [ 487.405000] x17: ffffb910cdc49000 x16: ffffad184d7d9080 x15: 0000000000004000 [ 487.412126] x14: 0000000000000008 x13: 000000000000ffff x12: 0000000000000000 [ 487.419252] x11: 0000000000000004 x10: 0000000000000001 x9 : ffffad184d7d927c [ 487.426379] x8 : 0000000000000000 x7 : 0000000ffffffd1d x6 : ffff662240a94900 [ 487.433505] x5 : 0000000000000003 x4 : 0000000000000009 x3 : ffffad184f4ce008 [ 487.440632] x2 : ffff662243eec000 x1 : 0000000100000100 x0 : fffffc0000000000 [ 487.447758] Call trace: [ 487.450194] kfree+0xac/0x304 [ 487.453151] dpaa2_eth_free_tx_fd.isra.0+0x33c/0x3e0 [fsl_dpaa2_eth] [ 487.459507] dpaa2_eth_tx_conf+0x100/0x2e0 [fsl_dpaa2_eth] [ 487.464989] dpaa2_eth_poll+0xdc/0x380 [fsl_dpaa2_eth]

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.18.5-1DEBIAN-CVE-2022-49452
Debian:13linux5.18.5-1DEBIAN-CVE-2022-49452
Debian:14linux5.18.5-1DEBIAN-CVE-2022-49452
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49452
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49452

Affected products (as reported)

VendorProductVersions
Linux Linux 3dc709e0cd47c602a8d1a6747f1a91e9737eeed3 – before ba5fe3dd4833bbc03609c5c0c2dd2cea5fa5addf3dc709e0cd47c602a8d1a6747f1a91e9737eeed3 – before 06d129946a71f3159b3b40ee95549183edf2c79d
Linux Linux 5.18

References