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CVE-2024-56766— mtd: rawnand: fix double free in atmel_pmecc_create_user()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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mtd模块的rawnand子模块中，atmel_pmecc_create_user函数中将“user”指针的分配方式从kzalloc改为devm_kzalloc后，调用kfree(user)会导致双重释放错误，影响NAND闪存的正常操作和数据完整性。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux 22fbbc37edb840fd420fadf670366be9bf028426< ca9818554b0f33e87f38e4bfa2dac056692d46cc affected
54cb5fa850f9306d84e49a3db44b7a7eb5536cd1< 1562871ef613fa9492aa0310933eff785166a90e affected
5fe7709251e334cc27618473299c48340cecd3c8< 3d825a241e65f7e3072978729e79d735ec40b80e affected
24cbc37e837fd9e31e5024480b779207d1d99f1d< 6ea15205d7e2b811fbbdf79783f686f58abfb4b7 affected
f1290871c8aaeb13029390a2b6e5c05733a1be6f< dd45c87782738715d5e7c167f8dabf0814a7394a affected
8ac19ec818c548c5788da5926dcc8af96fad4bb1< d2f090ea57f8d6587e09d4066f740a8617767b3d affected
6d734f1bfc336aaea91313a5632f2f197608fadd< d8e4771f99c0400a1873235704b28bb803c83d17 affected
2014fcea19ec27df033359a0f42db0e8ed4290a8 affected
… +9 more rows
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I. Basic Information for CVE-2024-56766

Vulnerability Information
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Vulnerability Title
mtd: rawnand: fix double free in atmel_pmecc_create_user()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: fix double free in atmel_pmecc_create_user() The "user" pointer was converted from being allocated with kzalloc() to being allocated by devm_kzalloc(). Calling kfree(user) will lead to a double free.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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mtd模块的rawnand子模块中，atmel_pmecc_create_user函数中将“user”指针的分配方式从kzalloc改为devm_kzalloc后，调用kfree(user)会导致双重释放错误，影响NAND闪存的正常操作和数据完整性。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 22fbbc37edb840fd420fadf670366be9bf028426 ~ ca9818554b0f33e87f38e4bfa2dac056692d46cc -
Linux Linux 5.4.287 ~ 5.4.289 -

II. Public POCs for CVE-2024-56766

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III. Intelligence Information for CVE-2024-56766

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Patches & Fixes for CVE-2024-56766 (7)

Same Patch Batch · Linux · 2025-01-06 · 12 CVEs total

CVE-2024-56757 7.8 HIGH Bluetooth: btusb: mediatek: add intf release flow when usb disconnect
CVE-2024-56759 7.8 HIGH btrfs: fix use-after-free when COWing tree bock and tracing is enabled
CVE-2024-56764 7.8 HIGH ublk: detach gendisk from ublk device if add_disk() fails
CVE-2024-56765 7.8 HIGH powerpc/pseries/vas: Add close() callback in vas_vm_ops struct
CVE-2024-56758 btrfs: check folio mapping after unlock in relocate_one_folio()
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-2024-56767 dmaengine: at_xdmac: avoid null_prt_deref in at_xdmac_prep_dma_memset
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
Same vendor: Linux

V. Comments for CVE-2024-56766

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