Linux Kernel
CVE-2024-26881
MEDIUM
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
In the Linux kernel, the following vulnerability has been resolved:
net: hns3: fix kernel crash when 1588 is received on HIP08 devices
The HIP08 devices does not register the ptp devices, so the hdev->ptp is NULL, but the hardware can receive 1588 messages, and set the HNS3_RXD_TS_VLD_B bit, so, if match this case, the access of hdev->ptp->flags will cause a kernel crash:
[ 5888.946472] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018 [ 5888.946475] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018 ... [ 5889.266118] pc : hclge_ptp_get_rx_hwts+0x40/0x170 [hclge] [ 5889.272612] lr : hclge_ptp_get_rx_hwts+0x34/0x170 [hclge] [ 5889.279101] sp : ffff800012c3bc50 [ 5889.283516] x29: ffff800012c3bc50 x28: ffff2040002be040 [ 5889.289927] x27: ffff800009116484 x26: 0000000080007500 [ 5889.296333] x25: 0000000000000000 x24: ffff204001c6f000 [ 5889.302738] x23: ffff204144f53c00 x22: 0000000000000000 [ 5889.309134] x21: 0000000000000000 x20: ffff204004220080 [ 5889.315520] x19: ffff204144f53c00 x18: 0000000000000000 [ 5889.321897] x17: 0000000000000000 x16: 0000000000000000 [ 5889.328263] x15: 0000004000140ec8 x14: 0000000000000000 [ 5889.334617] x13: 0000000000000000 x12: 00000000010011df [ 5889.340965] x11: bbfeff4d22000000 x10: 0000000000000000 [ 5889.347303] x9 : ffff800009402124 x8 : 0200f78811dfbb4d [ 5889.353637] x7 : 2200000000191b01 x6 : ffff208002a7d480 [ 5889.359959] x5 : 0000000000000000 x4 : 0000000000000000 [ 5889.366271] x3 : 0000000000000000 x2 : 0000000000000000 [ 5889.372567] x1 : 0000000000000000 x0 : ffff20400095c080 [ 5889.378857] Call trace: [ 5889.382285] hclge_ptp_get_rx_hwts+0x40/0x170 [hclge] [ 5889.388304] hns3_handle_bdinfo+0x324/0x410 [hns3] [ 5889.394055] hns3_handle_rx_bd+0x60/0x150 [hns3] [ 5889.399624] hns3_clean_rx_ring+0x84/0x170 [hns3] [ 5889.405270] hns3_nic_common_poll+0xa8/0x220 [hns3] [ 5889.411084] napi_poll+0xcc/0x264 [ 5889.415329] net_rx_action+0xd4/0x21c [ 5889.419911] __do_softirq+0x130/0x358 [ 5889.424484] irq_exit+0x134/0x154 [ 5889.428700] __handle_domain_irq+0x88/0xf0 [ 5889.433684] gic_handle_irq+0x78/0x2c0 [ 5889.438319] el1_irq+0xb8/0x140 [ 5889.442354] arch_cpu_idle+0x18/0x40 [ 5889.446816] default_idle_call+0x5c/0x1c0 [ 5889.451714] cpuidle_idle_call+0x174/0x1b0 [ 5889.456692] do_idle+0xc8/0x160 [ 5889.460717] cpu_startup_entry+0x30/0xfc [ 5889.465523] secondary_start_kernel+0x158/0x1ec [ 5889.470936] Code: 97ffab78 f9411c14 91408294 f9457284 (f9400c80) [ 5889.477950] SMP: stopping secondary CPUs [ 5890.514626] SMP: failed to stop secondary CPUs 0-69,71-95 [ 5890.522951] Starting crashdump kernel...
AnalysisAI
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix kernel crash when 1588 is received on HIP08 devices The HIP08 devices does not register the ptp devices, so the. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.
Technical ContextAI
This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix kernel crash when 1588 is received on HIP08 devices The HIP08 devices does not register the ptp devices, so the hdev->ptp is NULL, but the hardware can receive 1588 messages, and set the HNS3_RXD_TS_VLD_B bit, so, if match this case, the access of hdev->ptp->flags will cause a kernel crash: [ 5888.946472] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018 [ 5888.946475] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018 ... [ 5889.266118] pc : hclge_ptp_get_rx_hwts+0x40/0x170 [hclge] [ 5889.272612] lr : hclge_ptp_get_rx_hwts+0x34/0x170 [hclge] [ 5889.279101] sp : ffff800012c3bc50 [ 5889.283516] x29: ffff800012c3bc50 x28: ffff2040002be040 [ 5889.289927] x27: ffff800009116484 x26: 0000000080007500 [ 5889.296333] x25: 0000000000000000 x24: ffff204001c6f000 [ 5889.302738] x23: ffff204144f53c00 x22: 0000000000000000 [ 5889.309134] x21: 0000000000000000 x20: ffff204004220080 [ 5889.315520] x19: ffff204144f53c00 x18: 0000000000000000 [ 5889.321897] x17: 0000000000000000 x16: 0000000000000000 [ 5889.328263] x15: 0000004000140ec8 x14: 0000000000000000 [ 5889.334617] x13: 0000000000000000 x12: 00000000010011df [ 5889.340965] x11: bbfeff4d22000000 x10: 0000000000000000 [ 5889.347303] x9 : ffff800009402124 x8 : 0200f78811dfbb4d [ 5889.353637] x7 : 2200000000191b01 x6 : ffff208002a7d480 [ 5889.359959] x5 : 0000000000000000 x4 : 0000000000000000 [ 5889.366271] x3 : 0000000000000000 x2 : 0000000000000000 [ 5889.372567] x1 : 0000000000000000 x0 : ffff20400095c080 [ 5889.378857] Call trace: [ 5889.382285] hclge_ptp_get_rx_hwts+0x40/0x170 [hclge] [ 5889.388304] hns3_handle_bdinfo+0x324/0x410 [hns3] [ 5889.394055] hns3_handle_rx_bd+0x60/0x150 [hns3] [ 5889.399624] hns3_clean_rx_ring+0x84/0x170 [hns3] [ 5889.405270] hns3_nic_common_poll+0xa8/0x220 [hns3] [ 5889.411084] napi_poll+0xcc/0x264 [ 5889.415329] net_rx_action+0xd4/0x21c [ 5889.419911] __do_softirq+0x130/0x358 [ 5889.424484] irq_exit+0x134/0x154 [ 5889.428700] __handle_domain_irq+0x88/0xf0 [ 5889.433684] gic_handle_irq+0x78/0x2c0 [ 5889.438319] el1_irq+0xb8/0x140 [ 5889.442354] arch_cpu_idle+0x18/0x40 [ 5889.446816] default_idle_call+0x5c/0x1c0 [ 5889.451714] cpuidle_idle_call+0x174/0x1b0 [ 5889.456692] do_idle+0xc8/0x160 [ 5889.460717] cpu_startup_entry+0x30/0xfc [ 5889.465523] secondary_start_kernel+0x158/0x1ec [ 5889.470936] Code: 97ffab78 f9411c14 91408294 f9457284 (f9400c80) [ 5889.477950] SMP: stopping secondary CPUs [ 5890.514626] SMP: failed to stop secondary CPUs 0-69,71-95 [ 5890.522951] Starting crashdump kernel... Affected products include: Linux Linux Kernel.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Null Pointer Dereference
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External POC / Exploit Code
Leaving vuln.today