CVE-2024-56767— dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset
Affected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | b206d9a23ac71cb905f5fb6e0cd813406f89b678< 3d229600c54e9e0909080ecaf1aab0642aefa5f0 | affected |
b206d9a23ac71cb905f5fb6e0cd813406f89b678< ed1a8aaa344522c0c349ac9042db27ad130ef913 | affected | ||
b206d9a23ac71cb905f5fb6e0cd813406f89b678< 8d364597de9ce2a5f52714224bfe6c2e7a29b303 | affected | ||
b206d9a23ac71cb905f5fb6e0cd813406f89b678< fdba6d5e455388377ec7e82a5913ddfcc7edd93b | affected | ||
b206d9a23ac71cb905f5fb6e0cd813406f89b678< e658f1c133b854b2ae799147301d82dddb8f3162 | affected | ||
b206d9a23ac71cb905f5fb6e0cd813406f89b678< 54376d8d26596f98ed7432a788314bb9154bf3e3 | affected | ||
b206d9a23ac71cb905f5fb6e0cd813406f89b678< c43ec96e8d34399bd9dab2f2dc316b904892133f | affected | ||
4.2 | affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2024-56767
Vulnerability Information
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Vulnerability Title
dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset The at_xdmac_memset_create_desc may return NULL, which will lead to a null pointer dereference. For example, the len input is error, or the atchan->free_descs_list is empty and memory is exhausted. Therefore, add check to avoid this.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在dmaengine模块的at_xdmac驱动中，at_xdmac_memset_create_desc函数可能返回NULL，例如输入的len值错误或atchan->free_descs_list为空且内存耗尽时，若未进行检查，将导致空指针引用错误，影响DMA操作的正常进行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-56767
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2024-56767 (7)
Same Patch Batch · Linux · 2025-01-06 · 12 CVEs total
| CVE-2024-56757 | Bluetooth: btusb: mediatek: add intf release flow when usb disconnect | |
| CVE-2024-56758 | btrfs: check folio mapping after unlock in relocate_one_folio() | |
| CVE-2024-56759 | btrfs: fix use-after-free when COWing tree bock and tracing is enabled | |
| CVE-2024-56760 | PCI/MSI: Handle lack of irqdomain gracefully | |
| CVE-2024-56761 | x86/fred: Clear WFE in missing-ENDBRANCH #CPs | |
| CVE-2024-56763 | tracing: Prevent bad count for tracing_cpumask_write | |
| CVE-2024-56764 | ublk: detach gendisk from ublk device if add_disk() fails | |
| CVE-2024-56765 | powerpc/pseries/vas: Add close() callback in vas_vm_ops struct | |
| CVE-2024-56766 | mtd: rawnand: fix double free in atmel_pmecc_create_user() | |
| CVE-2024-56768 | bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP | |
| CVE-2024-56769 | media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg |
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
Same vendor: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
V. Comments for CVE-2024-56767
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