In the Linux kernel, the following vulnerability has been resolved:
cifs: potential buffer overflow in handling symlinks
Smatch printed a warning: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() 'dctx->buf' too small (16 vs u32max)
It's caused because Smatch marks 'link_len' as untrusted since it comes from sscanf(). Add a check to ensure that 'link_len' is not larger than the size of the 'link_str' buffer.
CVSS Details
- CVSS 3.1 Base Score: 9.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-headersUpgrade kernel-rt-modulesUpgrade kernel-modulesUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-abi-stablelistsUpgrade kernel-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-coreUpgrade kernel-cross-headersUpgrade kernel-toolsUpgrade kernel-rt-debug-modulesUpgrade kernel-rtUpgrade kernelUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-tools-libsUpgrade kernel-rt-debug-develUpgrade kernel-tools-libs-develUpgrade kernel-rt-debugUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debug-develUpgrade kernel-rt-coreUpgrade kernel-debugUpgrade bpftoolUpgrade kernel-docUpgrade kernel-develUpgrade python3-perfUpgrade kernel-rt-develUpgrade perfUpgrade kernel-rt-debug-modules-extra | Jul 17, 2025 | Feb 26, 2025 |
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade perfUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-5.10.112-108.499Upgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.276-211.499Upgrade bpftoolUpgrade kernel | May 21, 2025 | Feb 26, 2025 |
| Amazon_linux | — | Upgrade kernel | May 22, 2025 | Jun 9, 2022 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade kernelUpgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-abi-stablelists | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-tools-libs | Jun 11, 2025 | Feb 26, 2025 |
| Oracle_linux | — | Upgrade kernel | Jul 18, 2025 | Feb 26, 2025 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernelNo solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Rocky_linux | — | Upgrade kernel-debug-modulesUpgrade kernel-rt-debuginfoUpgrade kernel-debug-debuginfoUpgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rtUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-modules-extraUpgrade kernel-tools-libs-develUpgrade bpftool-debuginfoUpgrade kernel-rt-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-rt-kvmUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-develUpgrade kernel-rt-develUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-debugUpgrade kernel-rt-coreUpgrade kernelUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debug-kvmUpgrade python3-perfUpgrade perfUpgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-modules-extraUpgrade kernel-debuginfoUpgrade kernel-rt-debug-coreUpgrade kernel-debug-develUpgrade kernel-tools-libsUpgrade kernel-modulesUpgrade kernel-cross-headersUpgrade kernel-develUpgrade bpftoolUpgrade kernel-rt-debug-debuginfoUpgrade kernel-coreUpgrade python3-perf-debuginfo | Feb 5, 2026 | Jul 29, 2025 |
| Ubuntu | — | Upgrade linux-lowlatency-hwe-5.15Upgrade linux-realtimeUpgrade linux-oracleUpgrade linux-intel-iotgUpgrade linux-ibm-5.4Upgrade linux-fipsUpgrade linux-raspiUpgrade linux-gkeUpgrade linux-aws-hweUpgrade linux-azure-fipsUpgrade linux-lowlatencyUpgrade linux-oracle-5.4Upgrade linux-aws-5.4Upgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-gcp-5.4Upgrade linux-iotUpgrade linux-kvmUpgrade linux-awsUpgrade linux-raspi-5.4Upgrade linux-ibmUpgrade linux-hwe-5.15Upgrade linux-gcp-4.15Upgrade linux-azure-4.15Upgrade linuxUpgrade linux-hweUpgrade linux-intel-iotg-5.15Upgrade linux-azure-5.15Upgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-gcpUpgrade linux-bluefieldUpgrade linux-azure | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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