In the Linux kernel, the following vulnerability has been resolved:
tty: synclink_gt: Fix null-pointer-dereference in slgt_clean()
When the driver fails at alloc_hdlcdev(), and then we remove the driver module, we will get the following splat:
[ 25.065966] general protection fault, probably for non-canonical address 0xdffffc0000000182: 0000 [#1] PREEMPT SMP KASAN PTI [ 25.066914] KASAN: null-ptr-deref in range [0x0000000000000c10-0x0000000000000c17] [ 25.069262] RIP: 0010:detach_hdlc_protocol+0x2a/0x3e0 [ 25.077709] Call Trace: [ 25.077924] <TASK> [ 25.078108] unregister_hdlc_device+0x16/0x30 [ 25.078481] slgt_cleanup+0x157/0x9f0 [synclink_gt]
Fix this by checking whether the 'info->netdev' is a null pointer first.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-livepatch-5.10.126-117.518Upgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade perf-debuginfoUpgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade perfUpgrade kernel-livepatch-4.14.285-215.501Upgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-devel | May 21, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernelUpgrade kernel-headersUpgrade kernel-tools-libsUpgrade perfUpgrade kernel-develUpgrade bpftoolUpgrade kernel-tools-libs-develUpgrade kernel-tools | May 13, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-tools | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-toolsUpgrade bpftool | Jun 11, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-ibmUpgrade linux-gcp-4.15Upgrade linux-azure-5.15Upgrade linux-realtimeUpgrade linux-kvmUpgrade linux-oracleUpgrade linux-gcp-fipsUpgrade linux-raspi-5.4Upgrade linux-gkeopUpgrade linux-iotUpgrade linux-gcp-5.15Upgrade linux-azure-4.15Upgrade linux-hwe-5.15Upgrade linux-raspiUpgrade linux-hweUpgrade linux-aws-fipsUpgrade linux-bluefieldUpgrade linux-azure-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-azure-5.4Upgrade linux-hwe-5.4Upgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-ibm-5.4Upgrade linux-lowlatencyUpgrade linux-azure-fde-5.15Upgrade linux-oracle-5.4Upgrade linux-gcp-5.4Upgrade linux-riscv-5.15Upgrade linux-oracle-5.15Upgrade linux-intel-iotgUpgrade linux-fipsUpgrade linuxUpgrade linux-gkeUpgrade linux-aws-hweUpgrade linux-nvidiaUpgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-lowlatency-hwe-5.15 | 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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