Vulnerability · Published May 1, 2024 · Assigned by Linux
CVE-2024-26993fs: sysfs: Fix reference leak in sysfs_break_active_protection()
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 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfs_break_active_protection() The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released. Fix the leak by adding an explicit kobject_put() call when kn is NULL.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | bpftool | 7.3.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-doc | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-headers | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.5.1.rt7.346.el8_10 | ALSA-2024:3627 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-tools | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | libperf | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | perf | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | python3-perf | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | rtla | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| AlmaLinux:9 | rv | 5.14.0-427.20.1.el9_4 | ALSA-2024:3619 |
| Debian:12 | linux | 6.1.90-1 | DEBIAN-CVE-2024-26993 |
| Debian:12 | linux | 6.1.90-1 | DSA-5680-1 |
| Debian:13 | linux | 6.8.9-1 | DEBIAN-CVE-2024-26993 |
| Debian:14 | linux | 6.8.9-1 | DEBIAN-CVE-2024-26993 |
| Rocky Linux:9 | kernel | 0:5.14.0-427.20.1.el9_4 | RLSA-2024:3619 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.5.1.rt7.346.el8_10 | RLSA-2024:3627 |
| Ubuntu:22.04:LTS | linux | 5.15.0-116.126 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux | 6.8.0-38.38 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux | 6.8.0-38.38 | USN-6893-1 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1065.71 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1011.12 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1011.12 | USN-6893-3 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1011.12~22.04.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1068.77 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1010.10 | USN-6893-1 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1010.10 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1010.10~22.04.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1068.77.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1064.72 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1010.11 | USN-6893-1 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1010.11 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1062.68 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1006.9 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1006.9 | USN-6893-2 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1048.55 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1058.61 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1008.8 | USN-6893-1 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1008.8 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-intel | 6.8.0-1007.14 | USN-6893-1 |
| Ubuntu:24.04:LTS | linux-intel | 6.8.0-1007.14 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1060.66 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1062.67 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-116.126 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-38.38.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-38.38.1 | USN-6893-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1060.61 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1009.9 | USN-6893-2 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1009.9 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1009.9~22.04.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1026.26 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1015.15 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1008.8 | USN-6893-1 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1008.8 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1063.69 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1008.8 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1008.8 | USN-6918-1 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1008.8~22.04.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1058.61 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1007.7 | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1007.7 | USN-6893-1 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:24.04:LTS | linux-riscv | 6.8.0-38.38.1 | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2024-26993 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1035.39 | UBUNTU-CVE-2024-26993 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 2afc9166f79b8f6da5f347f48515215ceee4ae37 – before f28bba37fe244889b81bb5c508d3f6e5c6e342c52afc9166f79b8f6da5f347f48515215ceee4ae37 – before 57baab0f376bec8f54b0fe6beb8f77a57c2280632afc9166f79b8f6da5f347f48515215ceee4ae37 – before 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e172afc9166f79b8f6da5f347f48515215ceee4ae37 – before 43f00210cb257bcb0387e8caeb4b46375d67f30c2afc9166f79b8f6da5f347f48515215ceee4ae37 – before 5d43e072285e81b0b63cee7189b3357c7768a43b2afc9166f79b8f6da5f347f48515215ceee4ae37 – before ac107356aabc362aaeb77463e814fc067a5d39572afc9166f79b8f6da5f347f48515215ceee4ae37 – before a4c99b57d43bab45225ba92d574a8683f9edc8e42afc9166f79b8f6da5f347f48515215ceee4ae37 – before a90bca2228c0646fc29a72689d308e5fe03e6d78 |
| Linux | Linux | 4.19 |
References
- https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5
- https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063
- https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17
- https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c
- https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b
- https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957
- https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4
- https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html x_transferred
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html