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 bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.10.126-117.518Upgrade python-perfUpgrade kernel-toolsUpgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-develUpgrade perfUpgrade kernelUpgrade kernel-livepatch-4.14.285-215.501Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64 | May 21, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-develUpgrade kernel-tools-libs-develUpgrade kernelUpgrade kernel-headers | May 13, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelists | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-toolsUpgrade bpftool | Jun 11, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-lowlatencyUpgrade linux-nvidiaUpgrade linux-oracle-5.15Upgrade linux-aws-5.15Upgrade linux-gcpUpgrade linux-ibm-5.4Upgrade linux-gcp-5.4Upgrade linux-oracle-5.4Upgrade linux-aws-hweUpgrade linux-gkeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-fde-5.15Upgrade linux-aws-5.4Upgrade linux-fipsUpgrade linux-riscv-5.15Upgrade linuxUpgrade linux-intel-iotgUpgrade linux-azure-5.15Upgrade linux-hwe-5.4Upgrade linux-ibmUpgrade linux-azureUpgrade linux-gcp-fipsUpgrade linux-iotUpgrade linux-raspi-5.4Upgrade linux-realtimeUpgrade linux-raspiUpgrade linux-bluefieldUpgrade linux-gkeopUpgrade linux-kvmUpgrade linux-hwe-5.15Upgrade linux-gcp-4.15Upgrade linux-hweUpgrade linux-azure-4.15Upgrade linux-azure-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-azure-fipsUpgrade linux-gcp-5.15Upgrade linux-oracleUpgrade linux-aws-fipsUpgrade linux-aws | 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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