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CVE-2024-41066— ibmvnic: Add tx check to prevent skb leak

EPSS 0.01% · P3
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I. Basic Information for CVE-2024-41066

Vulnerability Information
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Vulnerability Title
ibmvnic: Add tx check to prevent skb leak
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ibmvnic: Add tx check to prevent skb leak Below is a summary of how the driver stores a reference to an skb during transmit: tx_buff[free_map[consumer_index]]->skb = new_skb; free_map[consumer_index] = IBMVNIC_INVALID_MAP; consumer_index ++; Where variable data looks like this: free_map == [4, IBMVNIC_INVALID_MAP, IBMVNIC_INVALID_MAP, 0, 3] consumer_index^ tx_buff == [skb=null, skb=<ptr>, skb=<ptr>, skb=null, skb=null] The driver has checks to ensure that free_map[consumer_index] pointed to a valid index but there was no check to ensure that this index pointed to an unused/null skb address. So, if, by some chance, our free_map and tx_buff lists become out of sync then we were previously risking an skb memory leak. This could then cause tcp congestion control to stop sending packets, eventually leading to ETIMEDOUT. Therefore, add a conditional to ensure that the skb address is null. If not then warn the user (because this is still a bug that should be patched) and free the old pointer to prevent memleak/tcp problems.
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，该漏洞源于在传输过程中，未检查skb地址是否为null，如果free_map和tx_buff列表不同步，可能导致skb内存泄漏。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 ~ 16ad1557cae582e79bb82dddd612d9bdfaa11d4c -
LinuxLinux 5.14 -

II. Public POCs for CVE-2024-41066

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III. Intelligence Information for CVE-2024-41066

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Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41089drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_hd_modes
CVE-2024-42068bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
CVE-2024-42067bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()
CVE-2024-42066drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-42065drm/xe: Add a NULL check in xe_ttm_stolen_mgr_init
CVE-2024-42063bpf: Mark bpf prog stack with kmsan_unposion_memory in interpreter mode
CVE-2024-42064drm/amd/display: Skip pipe if the pipe idx not set properly
CVE-2023-52887net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_s
CVE-2024-41098ata: libata-core: Fix null pointer dereference on error
CVE-2024-41097usb: atm: cxacru: fix endpoint checking in cxacru_bind()
CVE-2024-41096PCI/MSI: Fix UAF in msi_capability_init
CVE-2024-41095drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_ld_modes
CVE-2024-41094drm/fbdev-dma: Only set smem_start is enable per module option
CVE-2024-41093drm/amdgpu: avoid using null object of framebuffer
CVE-2024-41092drm/i915/gt: Fix potential UAF by revoke of fence registers
CVE-2024-41078btrfs: qgroup: fix quota root leak after quota disable failure
CVE-2024-41081ila: block BH in ila_output()
CVE-2024-41080io_uring: fix possible deadlock in io_register_iowq_max_workers()
CVE-2024-41079nvmet: always initialize cqe.result
CVE-2024-41076NFSv4: Fix memory leak in nfs4_set_security_label

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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