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Vulnerability · Published May 1, 2025 · Assigned by Linux

CVE-2022-49803netdevsim: Fix memory leak of nsim_dev->fa_cookie

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 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 89.6% 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: netdevsim: Fix memory leak of nsim_dev->fa_cookie kmemleak reports this issue: unreferenced object 0xffff8881bac872d0 (size 8): comm "sh", pid 58603, jiffies 4481524462 (age 68.065s) hex dump (first 8 bytes): 04 00 00 00 de ad be ef ........ backtrace: [<00000000c80b8577>] __kmalloc+0x49/0x150 [<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim] [<0000000093d78e77>] full_proxy_write+0xf3/0x180 [<000000005a662c16>] vfs_write+0x1c5/0xaf0 [<000000007aabf84a>] ksys_write+0xed/0x1c0 [<000000005f1d2e47>] do_syscall_64+0x3b/0x90 [<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd The issue occurs in the following scenarios: nsim_dev_trap_fa_cookie_write() kmalloc() fa_cookie nsim_dev->fa_cookie = fa_cookie .. nsim_drv_remove() The fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To fix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.0.10-1DEBIAN-CVE-2022-49803
Debian:13linux6.0.10-1DEBIAN-CVE-2022-49803
Debian:14linux6.0.10-1DEBIAN-CVE-2022-49803
Ubuntu:22.04:LTSlinux5.15.0-186.196UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux5.15.0-186.196USN-8575-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-aws5.15.0-1112.119UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-aws5.15.0-1112.119USN-8575-2
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure5.15.0-1117.126USN-8575-3
Ubuntu:22.04:LTSlinux-azure5.15.0-1117.126UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1117.126UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1117.126USN-8610-1
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-gcp5.15.0-1112.122UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-gcp5.15.0-1112.122USN-8575-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-gke5.15.0-1108.114UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-gke5.15.0-1108.114USN-8575-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1095.103USN-8575-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1095.103UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-ibm5.15.0-1106.110USN-8575-2
Ubuntu:22.04:LTSlinux-ibm5.15.0-1106.110UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1107.113UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1107.113USN-8620-4
Ubuntu:22.04:LTSlinux-kvm5.15.0-1104.109UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-kvm5.15.0-1104.109USN-8575-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-184.194UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-184.194USN-8575-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1107.108USN-8575-2
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1107.108UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1064.66USN-8576-2
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1064.66UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1053.53UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1053.53USN-8576-2
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-oracle5.15.0-1109.115USN-8575-3
Ubuntu:22.04:LTSlinux-oracle5.15.0-1109.115UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-raspi5.15.0-1106.109USN-8668-2
Ubuntu:22.04:LTSlinux-raspi5.15.0-1106.109UBUNTU-CVE-2022-49803
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49803
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1075.79UBUNTU-CVE-2022-49803
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1075.79USN-8575-1

Affected products (as reported)

VendorProductVersions
Linux Linux d3cbb907ae57fe5da314b51d949b617b538bdeae – before 7d79725a7073d86b9185f87718e22f3d65115801d3cbb907ae57fe5da314b51d949b617b538bdeae – before 6d463ddd0107d4188229d996dcdd45c99bad8af7d3cbb907ae57fe5da314b51d949b617b538bdeae – before 207edad5717e0a5709ce8467f0eff41c607835c9d3cbb907ae57fe5da314b51d949b617b538bdeae – before 064bc7312bd09a48798418663090be0c776183db
Linux Linux 5.7

References