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Vulnerability · Published May 1, 2024 · Assigned by Linux

CVE-2024-26943nouveau/dmem: handle kcalloc() allocation failure

Medium 5.5

In plain English

A medium-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 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 86.7% 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: nouveau/dmem: handle kcalloc() allocation failure The kcalloc() in nouveau_dmem_evict_chunk() will return null if the physical memory has run out. As a result, if we dereference src_pfns, dst_pfns or dma_addrs, the null pointer dereference bugs will happen. Moreover, the GPU is going away. If the kcalloc() fails, we could not evict all pages mapping a chunk. So this patch adds a __GFP_NOFAIL flag in kcalloc(). Finally, as there is no need to have physically contiguous memory, this patch switches kcalloc() to kvcalloc() in order to avoid failing allocations.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.85-1DEBIAN-CVE-2024-26943
Debian:13linux6.7.12-1DEBIAN-CVE-2024-26943
Debian:14linux6.7.12-1DEBIAN-CVE-2024-26943
Ubuntu:24.04:LTSlinux6.8.0-35.35UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-aws6.8.0-1009.9UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-azure6.8.0-1008.8UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-gcp6.8.0-1008.9UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-gke6.8.0-1004.7UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-ibm6.8.0-1006.6UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-35.35.1UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1006.6UBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-oracle6.8.0-1006.6UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-raspi6.8.0-1005.5UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-26943
Ubuntu:24.04:LTSlinux-riscv6.8.0-35.35.1UBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-26943
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-26943

Affected products (as reported)

VendorProductVersions
Linux Linux 249881232e1471d28b68f9a3829acc14d150cf5d – before 9acfd8b083a0ffbd387566800d89f55058a68af2249881232e1471d28b68f9a3829acc14d150cf5d – before 2a84744a037b8a511d6a9055f3defddc28ff4a4d249881232e1471d28b68f9a3829acc14d150cf5d – before 5e81773757a95fc298e96cfd6d4700f07b6192a2249881232e1471d28b68f9a3829acc14d150cf5d – before 3e82f7383e0b82a835e6b6b06a348b2bc4e2c2ee249881232e1471d28b68f9a3829acc14d150cf5d – before 16e87fe23d4af6df920406494ced5c0f4354567b
Linux Linux 6.1

References